AD-A146 161 NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL DAMS 1/BRIERLY POND DAM (MA..(U) CORPS OF ENGINEERS WALTHAM MA

A NEW ENGLAND DIV DCT 78

UCLIFIED I I3l

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MICROCOPY RESOLUTION TEST CHARTNATIONAL BUREAU Of SIANOARDS-1963-A

BLACKSTONE RIVER BASIN oF

r- MILLBURY, MASSACHUSKITS

BRIERLY POND DAMIMA 00143

PHASE I INSPECTION REPORTNATIONAL DAM INSPECTION PROGRAM

DTICsEcDTEOCT 3 U 4.

". DEPARTMENT OF THE ARMYNEW ENGLAND DIVISION, CORPS OF ENGINEERS

WALTHAM, MASS. 02154

jpps"d i pabft 1 OCTOBER 1978

* 84 09 28 067

tirI A¢, TF f_SECURITY CLASSIFICATION OF THIS PAGE (4I*en Deet knioeed)

REPORT DOCUREAD INSTRUCTIONSREPORT__ DOCUMENTATIONPAGE_ BEFORE COMPLETING FORM

|. REPORT MUMMER 2. GOVT ACCESSION NO. 3. RECIPIENT'$ CATALOG NUMER

MA 00143 IV 10 A.4. TITLE (and Suibtile) S. TYPE OF REPORT & PERIOD COVEREO

Brierly Pond Dam INSPECTION REPORT

NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL G. PERFORMING OR. REPORT NUMSER

7. AUTmOR(aj 1. CONTRACT OR GRANT 1UMMER(s)

U.S. ARMY CORPS OF ENGINEERSNEW ENGLAND DIVISION

S. PERFORMING ORGANIZATION NAME AND ADDRESS 90. PROGRAM ELEMENT. PROJECT. TASKAREA & WORK UNIT NUMVENS

It. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE

DEPT. OF THE ARMY, CORPS OF ENGINEERS October 1978NEW ENGLAND DIVISION, NEDED 13. NuMUERO PAGES424 TRAPELO ROAD, WALTHAM, MA. 02254 55

14. MONITORING AGENCY NAME A AODRESS(If dilteenat grow CaaW.ln" Office) IS. SECURITY CLASS. (at taht reft9t)

UNCLASSIFIEDI&*. D(CL AISI FICA TION/OWNGRADING

SCHEDULE

I•. DISTRISUTION STATEMENT T(eigh A.o.erij

APPROVAL FOR PUBLIC RELEASE: DISTRIBUTION UNLIMITED

1T. DISTRIOUTION STATEMENT (of Me abe.f."t ".ee*.d in ,-ie. 20. Of dAil..leni he Ae P)

IS. SUPPLEMENTARY NOTES

Cover program reads: Phase I Inspection Report, National Dam Inspection Program;however, the official title of the program is: National Program for Inspection ofNon-Federal Dams; use cover date for date of report.

IS. KEY WORDS (Cmntume en rovereeo *d of noeom and fidefiy by week .. IN1e)

DAMS, INSPECTION, DAM SAFETY,

Blackstone River BasinMillbury, Mass.

so. A&STRACT fCetm." entwtese side fln ,eey m.d Identiy by •blckmmA . 1)

Brierly Pond Dam consists of an earthfill dam which is part of West Main St. inWillbury Mass. The main dam is about 260 feet long, with a maximum height of 10feet. The dike is about 225 feet long and 5 feet high. Brierly Pond Dam and Dikeare considered to be in fair condition. An outflow test flood of 2,560 cfs willovertop the dam by about 2.4 feet.

DD I ' 1473 i@Ion OF I Nov so is OBSLETE

DEPARTMENT OF THE ARMYNEW ENGLAND DIVISION. CORPS OF ENGINEERS

424 TRAPELO ROAD

WALTHAM, MASSACHUSETTS 02154

-- REPLY TO

ATTENTION OF:

NEDED JAN 3 0 1979

Honorable Edward J. KingGovernor of the Commonwealth ofMassachusetts

State HouseBoston, Massachusetts 02133

Dear Governor King:

I am forwarding to you a copy of the Brierly Pond Dam Phase I InspectionReport, which was prepared under the National Program for Inspection of

..Non-Federal Dams. This report is presented for your use and is basedupon a visual inspection, a review of the past performance and a briefhydrological study of the dam. A brief assessment is included at thebeginning of the report. I have approved the report and support thefindings and recommendations described in Section 7 and ask that youkeep me informed of the actions taken to implement them. This follow-upaction is a vitally important part -f this program.

A copy of this report has been forwarded to the Department of Environ-mental Quality Engineering, the cooperating agency for the Commonwealthof Massachusetts. In addition, a copy of the report has also been fur-nished the owner, Windle Industires, Inc., 65 Canal Street, Millbury,Massachusetts 02537.

Copies of this report will be made available to the public, upon re-quest, by this office under the Freedom of Information Act. In the caseof this report the release date will be thirty days from the date ofthis letter.

I wish to take this opportunity to thank you and the Department ofEnvironmental Quality Engineering for your cooperation in carrying outthis program.

Sincerely yours,

Incl JHNAs stated ( C lonel, Corps of Engineers

\. 1 ision Engineer

BRIERLY POND DAM

MA 0O143

BLACKSTONE RIVER BASINMILLBURY, MASSACHUSETTS

PHASE I - INSPECTION REPORTNATIONAL DAM INSPECTION

PROGRAM

Accession ForNTIS GRA&IDTIC TAB CUnannounced 0Jestification

1 _~Distribut ion/

Availability CodesAv 1i aid/or

Dist 4 SpoOL&I

[ I

NATIONAL DAM INSPECTION

PROGRAM

PHASE I INSPECTION REPORT

BRIEF ASSESSMENT

Identification No.: MA00143

Name of Dam: Brierly Pond

Town: Millbury

County and State: Worcester County, Massachusetts

Stream: Singletary Brook - Tributary of the BlackstoneRiver

Date of Inspection: August 23, 1978

Brierly Pond Dam consists of an earthfill damwhich is part of West Main Street, Millbury, Massa-chusetts. An earthfill dike section is located at thenortheast end of the pond 600 feet from the main dam.The age of the structures is unknown. The main dam isabout 260 feet long, with a maximum height of 10 feet.The dike is about 225 feet long and 5 feet high.

There are two regulating outlets at the pond.One is a U-shaped concrete structure extending from theupstream toe of the dam. This outlet has a submerged4-foot-square wooden slide gate with an invert atelevation (El) 511.9. The second outlet is located atthe dike, and consists of a 4-foot-wide wooden slidegate and stone outlet channel. The invert of the out-let is at El 512.5. When the gate is open, water flowsdirectly into the outlet channel. When the pond levelexceeds El 516.3, and the gate is closed, the top of thegate serves as an overflow weir leading to the outletchannel. Overflow can also be controlled by flashboardson this gate. There is no other spillway at this siteother than flow over the wooden slide gate.

The dam and dike at Brierly Pond were neitherdesigned nor constructed according to current approvedstate-of-the-art procedures. Based upon the visualinspection at the site, the lack of engineering data,

BRIERLY POND DAM

and little evidence of operational or maintenance pro-cedures, it was concluded that there are deficienciesthat must be corrected to assure their continued per-formance. Generally, Brierly Pond dam and dike areconsidered to be in fair condition. Because of thepotential danger to a few lives and the limited propertydevelopment in the area, the dam has been placed in the"significant" hazard category.

The following visible signs of distress werenoted at the site: erosion and insufficient riprap onthe upstream face of the dam; the lack of permanently-installed equipment for opening the gate at the low-level intake; leakage around the closed gate; seepagein the tailrace downstream of the dam; and overgrowthof vegetation on the dam, the dike, and over the outletchannel.

Hydraulic analyses indicate that the openedoutlet at the dike can discharge a flow of 180 cubicfeet per second (cfs) when the water surface is at El519.0, which is the lowest point on the dike. If thedike outlet gate is not opened, the discharge is 48 cfsat pond El 519.

-An outflow test flood of 2,560 cfs (derived fromone-half the probable maximum flood) will overtop thedam by about 2.4 feet. The outlet even when fullyopened is inadequate as a spillway because it can dis-charge only 7 percent of the test flood. In the eventof overtopping, complete failure of the main dam isunlikely, although local breaching and severe floodingis a possibility. Complete failure of the dike ispossible during overtopping.

It is recommended that the Owner employ aqualified consultant to conduct a more detailed hydrau-lic and hydrologic investigation to design an adequatespillway. It is also recommended that the Owner con-struct a permanent mechanical operator for opening thegate at the outlet at the dam; repair the riprap on theupstream face of the dam; repair the stone masonry onthe approach channel to the spillway; and clear thetrees and brush from all structures. The Owner shouldalso implement a systematic program of maintenanceinspections.

BRIERLY POND DAM

The above recommendations and remedial measuresshould be implemented by the Owner within a period of 2years after receipt of this Phase I Inspection Report.An alternative to these recommendations would be drain-ing the pond and breaching or removing the dike or dam.

Edward M. Greco, P.E.Project ManagerMetcalf & Eddy, Inc.

Connecticut RegistrationNo. 08365

Approved by:

Stephen L. Bishop, P.E.:I LVice President *.P,

Metcalf & Eddy, Inc. .. "'..

Massachusetts RegistrationNo. 19703

BRIERLY POND DAM

This Phase I Inspection Report on Brierly Pond Damhas.been reviewed by the undersigned Review Board members. In ouropinion, the reported findings, conclusions, and recommendations areconsistent with the Recommended Guidelines for Safety Inspection ofDams, and with good engineering judgment and practice, and is herebysubmitted for approval.

RICHARD F. DOHERTY, HKE iEKWater Control BranchEngineering Division

JOSEPH A. MCELROY, MEMBERFoundation-& Materials BranchEngineering Division

CARNEY MTERZIAN, CHAIRMANChief, Structural SectionDesign BranchEngineering Division

APPROVAL RECOMME1DED:

Chief, Engtneering Division

PREFACE

This report is prepared under guidance containedin Recommended Guidelines for Safety Inspection of Dams,for a Phase I Investigation. Copies of these guidelinesmay be obtained from the Office of Chief of Engineers,Washington, D.C. 20314. The purpose of a Phase IInvestigation is to identify expeditiously those damswhich may pose hazards to human life or property.The assessment of the general condition of the dam isbased upon available data and visual inspections.Detailed investigation, and analyses involving topo-graphic mapping, subsurface investigations, testing,and detailed computational evaluations are beyond thescope of a Phase I investigation; however, the investi-gation is intended to identify any need for such studies.

In reviewing this report, it should be realizedthat the reported condition of the dam is based on obser-vations of field conditions at the time of inspectionalong with data available to the inspection team. Incases where the reservoir was lowered or drained priorto inspection, such action, while improving the stabil-ity and safety of the dam, removes the normal load onthe structure and may obscure certain conditions whichmight otherwise be detectable if inspected under thenormal operating environment of the structure.

It is important to note that the condition of adam depends on numerous and constantly changing internaland external conditions, and is evolutionary in nature.It would be incorrect to assume that the present condi-tion of the dam will continue to represent the conditionof the dam at some point in the future. Only throughcontinued care and inspection can there be any chancethat unsafe conditions be detected.

Phase I inspections are not intended to providedetailed hydrology and hydraulic analyses. In accor-dance with the established Guidelines, the Spillway Testflood is based on the estimated "Probable MaximumFlood" for the region (greatest reasonably possiblestorm runoff), or fractions thereof. Because of themagnitude and rarity of such a storm event, a findingthat a spillway will not pass the test flood should notbe interpreted as necessarily posing a highly inadequatecondition. The test flood provides a measure of rela-tive spillway capacity and serves as an aid in determin-ing the need for more detailed hydrologic and hydraulicstudies, considering the size of the dam, its generalconditions and the downstream damage potential.

BRIERLY POND DAM

rIn.. . . .. I| - LA .- NOI . UAi

TABLE OF CONTENTS

BRIEF ASSESSMENT

PREFACE

OVERVIEW PHOTO iii

LOCATION MAP iv

REPORT

SECTION 1 - PROJECT INFORMATION 1

1.1 General I1.2 Description of Project 21.3 Pertinent Data 6

SECTION 2 - ENGINEERING DATA 11

2.1 General 112.2 Construction Records 112.3 Operation Records 112.4 Evaluation of Data 11

SECTION 3 - VISUAL INSPECTION 13

3.1 Findings 133.2 Evaluation 15

SECTION 4 - OPERATING PROCEDURES 16

4.1 Procedures 164.2 Maintenance of Dam 164.3 Maintenance of Operating

Facilities 164.4 Description of Any Warning

System in Effect 164.5 Evaluation 16

SECTION 5 - HYDRAULIC/HYDROLOGIC 17

5.1 Evaluation of Features 17

BRIERLY POND DAM

i

TABLE OF CONTENTS (Continued)

Page

SECTION 6 - STRUCTURAL STABILITY 19

6.1 Evaluation of StructuralStability 19

SECTION 7 - ASSESSMENT, RECOMMENDATIONS,AND REMEDIAL MEASURES 20

7.1 Dam Assessment 207.2 Recommendations 217.3 Remedial Measures 217.4 Alternatives 22

APPENDIXES

APPENDIX A - PERIODIC INSPECTION CHECKLIST

APPENDIX B - PLAN OF DAM AND PREVIOUSINSPECTION REPORTS

APPENDIX C - PHOTOGRAPHS

APPENDIX D - HYDROLOGIC AND HYDRAULICCOMPUTATIONS

APPENDIX E - INFORMATION AS CONTAINED IN THENATIONAL INVENTORY OF DAMS

BRIERLY POND DAMii

I

OVERVIEW

BRIERLY POND) DAMMILLBURY, MASSACHUSETTS

UPSTREAM V/IEW OF MAIN DAM

Location and Direction of Photographs

Shown on Figure in Appendix B

WORCESTER SOUTH QUADRANGLE IPLMASSACHISMTS-WORCESTER CO. SPLW N IKE

~~~LOCATION OFP 0RAMYPODDA

NATIONAL DAM INSPECTIONPROGRAM

PHASE I INSPECTION REPORT

BRIERLY POND

SECTION 1

PROJECT INFORMATION

1.1 General

a. Authority. Public Law 92-367, August 8, 1972,authorized the Secretary of the Army, throughthe Corps of Engineers, to initiate a nationalprogram of dam inspection throughout the UnitedStates. The New England Division of the Corpsof Engineers has been assigned the responsibilityof supervising the inspection of dams withinthe New England Region. Metcalf & Eddy, Inc.has been retained by the New England Divisionto inspect and report on selected dams in theState of Massachusetts. Authorization andnotice to proceed was issued to Metcalf & Eddy,Inc. under a letter of July 28, 1978, fromRalph T. Garver, Colonel, Corps of Engineers.Contract No. DACW 33-78-C-0306 has beenassigned by the Corps of Engineers for thiswork.

b. Purpose

(1) Perform technical inspection and evalua-tion of non-Federal dams to identifyconditions which threaten the publicsafety and thus permit correction in atimely manner by non-Federal interests.

(2) Encourage and assist the States to ini-tiate quickly effective dam safety pro-grams for non-Federal dams.

(3) Update, verify and complete the NationalInventory of Dams.

BRIERLY POND DAM

1

1.2 Description of Project

a. Location. The dam is located on SingletaryBrook, a tributary of the Blackstone River, inthe Town of Millbury, Worcester County, Mass-achusetts (see location plan).

b. Description of Dam and Appurtenances. Thereare two impoundment structures on Brierly Pond:an earthfill dam on the east side that formspart of West Main Street; and an earthfill dikeat the northeast end of the pond, about 200feet west of West Main Street (see locationmap, and plan of dam, and dike Figures B-1 andB-2). The dam is about 260 feet long with amaximum height of 10 feet. The crest of thedam, which is the paved road, is generallyabout 33 feet wide but increases to 100 feetwide at the south abutment, where Sutton Roadforks to the south from West Main Street. Theelevation (El) of the crest varies from 518.9to 520.7. On the upstream slope of the damthere was originally a vertical stone wall twoto three feet high. The wall has collapsed inmany areas, and is overgrown with weeds. Thereis a small sandy beach near the south abutment,and beyond that an area of the pond has beenfilled for parking. The downstream slope ofthe dam (the east side of West Main Street) isa vertical concrete wall, and immediatelybeyond that is a three-story brick building,formerly the mill that used the water from thepond.

A low level outlet (outlet "B" on Figure B-l)is located at the dam about 100 feet south ofthe north abutment. The structure consists of

a U-shaped concrete headwall with a 4-footsquare submerged wooden slide gate. The invertof the gate is at El 511.9. This outlet isinoperative because there is no permanentmechanical operator at the gate. The outletpipe reportedly enters the mill at thedownstream face of the dam.

BRIERLY POND DAM

2

In addition to the low level outlet, there is ahigh-level service intake located about 30 feetoffshore from the outlet ("C" on Figure B-l).The structure is a 6-foot-square concrete box,and the intake provided water to run the wheelat the mill. There is no access walk to theintake. Since the penstock has reportedly beenfilled in with concrete, this intake is inopera-tive.

The dike at Brierly Pond is about 225 feet longand about 5 feet high (see Figure B-2, Plan ofDike and Outlet). The crest of the dike isgenerally 13 feet wide north of the spillway.The elevation of the grass- covered crestvaries from 519.5 to 521.2. The upstream slopeis approximately 2:1 (horizontal to vertical)and covered with riprap. The downstream slopevaries from 3:1 at the northern section of thedike to almost 6:1 at the southern section.The downstream face is covered with grass, andslopes into the backyards of two abuttingresidences.

There is no spillway at the dam other than asecond low-level outlet (Outlet "A") locatednear the south end of the dike. The structureconsists of an approach channel bounded by2-foot thick mortared stone masonry and con-crete sidewalls; a 4-foot-wide wooden slidegate operated by a rack and pinion mechanism,and a dry stone masonry outlet channel. Thegate stem is accessIble by a wooden walk-way built across the outlet channel. Theinvert of the outlet is at El 512.5. When thegate is closed, water can flow directly intothe outlet channel. When the gate is lowered,water above El 516.3 can flow over the top ofthe gate and enter the same channel. Flash-boards can be added above the gate to increasethe storage capacity of the pond.

The outlet channel is 190 feet long anddecreases in height and width from 5.3 by 4feet at the gate to 3.7 by 3.2 feet at thestone box culvert under West Main Road. Thechannel is straight, and has vertical side-walls for most of its length. The slope ofthe channel is approximately 5.5 percent. The

BRIERLY POND DAM3

outlet end of the culvert is located east ofWest Main Street and is 3 feet wide and 2.8feet high.

c. Size Classification. Brierly Pond Dam isclassified in the "small category since ithas a maximum height of 10 feet and a maximumstorage capacity of 135 acre-feet.

d. Hazard Classification. The mill buildingthat formerly used the pond is now used forstorage and light industry, and is locatedimmediately downstream of the dam. Failureof the dam could cause considerable damage toWest Main Street and the building, before theflood water entered the former Mayo Pondbasin. Failure of the dike could result inextensive property damage and possible lossof life in about five homes abutting the down-stream toe of the dike. The height of theflood wave due to dike failure would be onthe order of 2 to 3 feet. In both cases, itis likely that the dry Mayo Pond basin wouldreduce the impact of a dam or dike failure onBramanville, located less than 1,500 feetdownstream of the dike. For this reason, thedike and dam at Brierly Pond has been class-ified in the "significant" category.

e. Ownership. The dam and dike are presentlyowned by Windle Industries, Inc., 65 CanalStreet, Millbury, Massachusetts, 02537 (tele-phone 617-865-4461). A representative of thecompany granted permission to enter theproperty and inspect the dam.

f. Operator. Windle Industries currentlyoperates the flashboards at the spillway, andthe outlet gate (B) at the dam.

g. Purpose of the Dam. The dam and dike wereconstructed sometime prior to 1924 (the firstrecorded inspection date) by the West EndThread Company Mill No. 1. The dam was usedto store water for mill processes - includingdye works and power for the water wheel. In1944 the dam became the property of the LinenThread Company, Inc., in Millbury. Thethread company sold the dam to the Winfred W.Windle Company (wool processing) in 1948, but

BRIERLY POND DAM

4

apparently they retained the water rights andthe right to enter and repair the dam. In1955 W.W. Windle granted water rights to theWorcester Brass and Electroplating Corpora-tion, who contracted for 50,000 gallons perday to their mill. The mill on West MainStreet is no longer in operation and theintakes (B and C) are closed or blocked. Thepond is presently used for recreation by thefew abutting residents near the dike, andthere is a small beach near the south abut-ment of the dam.

h. Design and Construction History. There are noplans available for the original dam or for anysubsequent repairs. The present owner providedno information on the design and constructionhistory of the dam. Early inspection reportson file at the Worcester County Commissioner'soffice and interviews with local residentsprovided some background information for boththe dam and the dike.

In the early history of the dam, most of thearea on West Main Street from north of the millto south of the fork at Sutton Road wasreported to be swamp land that had been filledin.

In 1925 the concrete wall at the downstreamside of the dam was new, the conduit to themill was a 48-inch diameter pipe, and the waterwheel, a size 6, was rated at 60 horsepower.The 1939 report states that the spillway (i.e.,the outlet A) was in good condition, anddescribes the concrete intake structure for themill. According to the sketch, the gate was 58inches square, and water flowed through thegate and down into a 65-inch diameter stoneculvert under the roadway. The gate wasoperated by a rack and pinion mechanism. In1940 the spillway was rated in fair condition,and there were no flashboards at the time ofthe inspection (December). The inspectorreported that the spillway was too small andthat the gate should be kept open to keep thepond at a lower level.

A 1963 inspection report describes a diver-sion channel located about 100 feet below theslide gate at outlet A. This channel has about

5 BRIERLY POND DAM

a 3- by 5-foot opening and is used to divertsome of the outlet flow to a communitycesspool. Small leaks were reported at thespillway, and three large leaks at thediversion channel outlet. At the main dam itwas recommended that the wood timbers on thegate be renewed, and the amount of freeboardfor the dam be increased.

Through interviews with local residents it waslearned that repairs were made to the out-let conduit walls and gate timbers in 1970.Also, the penstock in the waterwheel intake (C)was filled in with concrete about 3 years ago.

i. Normal Operational Procedures. There are nooperational procedures at this dam. The gateat Outlet B has not been operated in a numberof years. The Owner removes the flashboardsfrom the slide gate at the dike in the latesummer, apparently to provide extra storage inthe pond in the event of flooding from seasonalstorms.

1.3 Pertinent Data

a. Drainage Area. The approximately 2,844-acredrainage area (4.4 square niles) above BrielyPond includes seven ponds in the Merrill PondState Forest and several other mill ponds.Singletary Pond is the largest and comprises 12percent of the drainage area. Singletary PondDam is also owned by Windle Industries. Thedrainage area is generally sparsely developedand consists of forest and farmland. The mostheavily populated areas are the lake frontproperties along Singletary Pond. Twohigh-tension lines and a buried pipeline crossthe drainage area south of Singletary Pond.

b. Discharge at the Dam Site. Water discharges atthe dike into the stone-lined channel that dis-charges east of West Main Street. There theflow Joins a tributary of Singletary Brookwhich flows through the former Mayo Pond. MayoPond was a mill pond, and although the mill anddam are still standing, the pond has beendrained. Singletary Brook flows north underBurbank Street through two 6- by 6-foot boxculverts and into low, open land until it flows

BRIERLY POND DAM

6

under Route 140. The brook flows on the edgeof a more heavily populated area of Millburyfor the remaining 1,200 feet to the BlackstoneRiver.

Water flowing through outlet B at the damenters the mill, then apparently dischargesinto an earth tailrace below the building, andinto Singletary Brook, also at Mayo Pond.

Hydraulic analyses indicate that, when opened,the outlet works (A) at the dike can dis-charge 180 cfs when the water surface is at El519, which is the lowest point on the dam.

An outflow test flood of 2,560 cfs (one-halfthe probable maximum flood) will overtop thedam by 2.4 feet. The outlet, when fullyopened, has the capacity to discharge only 7percent of this flow, and with the gate closedthe discharge is negligible, meaning thatalmost the entire flow will be over the crestsof the dam and dike.

The maximum flood which has occurred at thedam site is unknown, although residents recallthat flooding on Beach Street (north of thedike) has occurred in the past.

There is no longer any flow through Outlet Bat the dam.

c. Elevation (feet above MSL (Mean Sea Level)).A benchmark elevation of 517.0 at the watersurface was estimated from a United StatesGeological Survey (USGS) to cgraphic map.

(1) Top dam: Main Dam: 519.0 to 520.7Dike: 519.5 to 521.2

(2) Test flood pool: 521.4

(3) Design surcharge (original design):unknown

(4) Full flood control pool: Not Applicable(N/A)

(5) Recreation pool: 516.3, top of slide gate

BRIERLY POND DAM7

(6) Spillway crest (top of slide gate): 516.3

(7) Upstream portal invert diversion tunnel:N/A

(8) Stream bed at dike (outlet channel):512.3

(9) Maximum tailwater: None

d. Reservoir

(1) Length of maximum pool: 1,800 feet

(2) Length of recreation pool: 1,800 feet

(3) Length of flood control pool: N/A

e. Storage (acre-feet)

(1) Test flood surcharge: 50 at El 521.4

(2) Top of dam: 135

(3) Flood control pool: N/A

(4) Recreation pool: 85 (approximate)

(5) Spillway Crest: 85

f. Reservoir Surface (acres)

*(l) Top dam: 17

*(2) Maximum pool: 17

(3) Flood-control pool: N/A

(4) Recreation pool: 17

(5) Spillway crest: 17

'Based on the assumption that the surface area willnot significantly increase with changes in reservoirelevation from 516.3 to 519.0.

BRIERLY POND DAM

8

g. Dam

(1) Type: Main dam: earthfillDike: earthfill

(2) Length: Main dam: 260 feetDike: 225 feet

(3) Height: Main dam: 10 feet - maximumDike: 5 foot - maximum

(4) Top width: Main dam: 33 feetDike: 13 feet

(5) Side slopes: Main dam - Upstream:UnknownDownstream:Vertical

Dike - Upstream: 2:1Downstream: 3:1

(6) Zoning: Unknown

(7) Impervious core: Unknown

(8) Cutoff: Unknown

(9) Grout curtain: Unknown

i. Spillway. (No spillway at this site other thanOutlet A)

(1) Type: sharp-crested weir - flashboards

over outlet gate

(2) Length of weir: 5.45 feet

(3) Crest elevation: 516.3 (top of gate)

(4) Gates: one 48-inch square wooden slidegate

(5) Upstream Channel: Stone masonry and con-crete walls on approachchannel

BRIERLY POND DAM

9

(6) Downstream Channel: Stone masonry channelwith vertical walls, 4 feet wide, 5.3 feetdeep at gate, to 3.2 feet wide, 3.7 feetdeep. Open channel is 191 feet long, thenstone culvert under road. Outlet is 3feet wide and 2.8 feet high.

J. Regulating Outlets. There are two regulatingoutlets at Brierly Pond. One is the slide gate(Outlet A) at the dike which when opened willallow flow down to El 512.5. There are keywaysfor 5.5-foot flashboards above the gate in thespillway. Shortly before the inspection two 6-or 7-inch boards were removed by the Owner.Water is presently flowing over the gate.

The second outlet, B, is located on the maindam. This gate is closed, and there is nopermanent mechanism for opening it. Accordingto a local resident, the gate was last openedwith the aid of a pulley system mounted on atripod on top of the intake structure.

Ii

BRIERLY POND DAM

10

SECTION

ENGINEERING DATA

2.1 General. There are no plans, specifications, orcomputations available from the Owner, State, orCounty offices relative to the design and con-struction of this dam. The only data available forthis evaluation were visual observations madeduring inspection, review of previous inspectionreports, and conversations with local residents,and State and County agencies.

We acknowledge the assistance and cooperation ofpersonnel of the Massachusetts Department of PublicWorks: Messrs. Willis Regan and Raymond Rochford,and of the Massachusetts Department of Environ-mental Quality Engineering, Division of Waterways:Messrs. John J. Hannon and Joseph Iagallo.

Also, we acknowledge the cooperation and assis-tance of personnel from the Worcester CountyEngineer's Office: Messrs. John O'Toole, JosephBrazauskas, and Mr. Wallace Lindquist - recentlyretired from county service.

Mr. Larry Stockwell, and Mr. William Grout, long-time residents of the Brierly Pond area, providedbackground history on the pond and mills.

2.2 Construction Records. There are no constructionrecords available.

2.3 Operating Records. No operating records are avail-able, and there is no daily record kept of theelevation of the pool or rainfall at the dam site.

2.4 Evaluation

a. Availability. Due to the age of this dam,there is no engineering data available.

b. Adequacy. The lack of in-depth engineeringdata did not allow for a definitive review.Therefore the adequacy of this dam could notbe assessed from the standpoint of reviewingdesign and construction data, but is based

BRIERLY POND DAM11

primarily on visual inspection, past perfor-mance history and engineering judgment.

c. Validity. The limited engineering data avail-able is valid.

BRIERLY POND DAM

12

SECTION 3

VISUAL INSPECTION

3.1 Findings

a. General. The Phase I Inspection of the danand dike at Brierly Pond was performed onAugust 23, 1978. A copy of the inspectioncheck list is in Appendix A. Previous inspec-tions of this dam have been made by otherssince 1924. A partial listing of theseinspections is in Appendix B. Copies of the1972 inspection reports by the MassachusettsDepartment of Public Works for both the damand the dike are also included in Appendix B.

b. Dam. The earthfill dam, which forms part ofWest Main Street, is in generally good condi-tion. The paved crest is level with no cracksor depressions on the surface. The upstreamslope is covered with weeds and only partiallyprotected by scattered riprap 1.5 to 2.5 feetin size. Apparently there was once a shortvertical stone wall at the top of the slopebut the wall has deteriorated in places to apile of rubble at the toe. The three-storybrick building situated on the downstreamslope of the dam is separated from the road bya 4-foot-wide, J0-foot-deep concrete channel.This channel is partially filled with water.

The earth dike, which is located about 600feet from the main dam, is in good condition.The crest and the downstream face are coveredwith grass. Since the downstream slope servesas a back yard for two residences, the area isvery well maintained. There are trees andshrubs growing on the upstream side of thecrest, partially hiding the low stone wall onthe shore.

c. Appurtenant Structures. Outlet A, at thedike, is in fair condition. There are patchesof mortar and concrete missing from thetraining walls, and a few large diameter (1 to2 foot) trees adjacent to the approach. Thefloor of the approach and discharge channel issubmerged, but appear to be paved with stone.

BRIERLY POND DAM

13

There is minor spalling and erosion of concretein the vicinity of the gate, but the gateappears to be in good condition. It is oper-able by a rack and pinion mechanism hungbetween timbers. The mechanism is accessibleby means of a wooden walkway which crosses theoutlet channel. The railing on the walkway isvery loose. There is a keyway for flashboardsto be added above the gate, but the flash-boards had been removed that week by theOwner.

The stone masonry of the narrow outlet channelis in good to fair condition; some of themortar and a few stones are missing at thebase of the sidewalls. There are numeroustrees growing on the banks of the channel, andin some places it is completely hidden bybrush. The open channel ends at West MainStreet and the inlet to the stone box culvertis obscured by vegetation. The outlet down-stream of the street is in a stone masonryretaining wall. This area near the road iscompletely overgrown with trees.

Outlet B at the main dam is in fair condition.The concrete is spalling, especially at thewater line. The slide gate is closed, andthere is no permanent gate-opening mechanismin place. Water can be heard running insidethe structure, suggesting that the gate leaks.

The tailrace downstream of the mill buildingis filled with brush and debris, and there isevidence of seepage.

The offshore service intake C is reportedlyblocked with concrete and inoperable. Thereis no approach bridge to this structure.

d. Reservoir Area. At the present time lightresidential and commercial development islimited to the north and east sides of Brierly

* Pond. In addition, a small land-clearingoperation is in progress on the northwest sideof the pond, opposite the dike. The remainderof the area west of the pond is hilly farm andwoodland.

BRIERLY POND DAM

14I"

e. Downstream Channel. Discharge from the tail-race downstream from the mill, as well as fromthe stone box culvert below outlet A, entersSingletary Brook in the former basin for MayoPond. The mill building and dam at Mayo Pondare still standing, although in a deterioratingstate, and the outlet and penstock are open.Below the mill Singletary Brook continues in anatural channel to the Blackstone River, about4,500 feet downstream, and Just south ofMillbury center.

3.2 Evaluation. Although the dam and dike appear to bein good condition, the condition of the upstreamslope of the dam and the leaking intake are signsof neglect. It is evident that these structuresare not adequately maintained. Recommended mea-sures to improve these conditions are stated inSection 7.3.

BRIERLY POND DAM

15

SECTION 4

OPERATING PROCEDURES

4.1 Procedures. There are no regular operating pro-cedures at this dam. It is reported that theOwner regulates the storage in the pond season-ally by adjusting the number of flashboards at theoutlet gate.

4.2 Maintenance of Dam. The crest of the main dam isa paved town road and is maintained by high-way department personnel. The upstream slope ofthe dam has deteriorated, judging by the conditionof the stone wall on the upstream face and theaccumulation of debris and vegetation. The dikecrest and downstream slope appear to be maintainedby the residents of the abutting property, but theupstream face is overgrown with brush.

4.3 Maintenance of Operating Facilities. The ser-vice intake structure C at the main dam wasblocked with concrete by the Owner. The gate onthe low-level outlet B appears to be leaking.Apparently the Owner has not used it for about 3years, as there is no permanent operating mechan-ism. There is no known maintenance procedurefor Outlet A.

4.4 Description of Any Warning System in Effect.There are no warning systems in effect at thisdam.

4.5 Evaluation. There are no regular operational orwarning systems in effect at Brierly Pond Dam, andthe maintenance is inadequate. This is extremelyundesirable, considering the dam is in the"significant" hazard category. A program ofoperation and maintenance for this dam should beimplemented as recommended in Section 7.3.

BRIERLY POND DAM

16

SECTION 5

HYDRAULIC/HYDROLOGIC

5.1 Evaluation of Features

a. Design Data. The probable maximum flood (PMF)rate was determined to be 1,200 cfs per squaremile. This calculation is based on an averagedrainage area slope of 3 percent, the pond-plus-swamp area to drainage area ratio of 19percent, and the U.S. Army Corps of Engineers'Flow Rates (dated December 1977). Applyingone-half the PMF to the 4.44 square miles ofdrainage area results in a calculated peakflood flow of 2,664 cfs as the inflow testflood. By adjusting the inflow test flood forsurcharge storage, the maximum discharge ratewas established as 2,560 cfs (577 cfs persquare mile) with the water surface at El.521.4.

For the peak outflow flood, the depth of flowover the crest at a minimum elevation of 519+is calculated to be 2.4 feet with a unit floWof 9.9 cfs per foot of width. Where flowbecomes critical, a critical depth of 1.5 feetwill occur with a critical velocity of 6.8 feetper second. Hydraulic analyses indicate thatoutlet A at the dike, when fully opened, candischarge a flow of 180 cfs with the surface ofthe water at El. 519.0, which is the low pointon the dam. This outlet, which also serves asa spillway, is inadequate since it can only dis-charge 7 percent of the test flood. Flood flowwill also occur in a low, broad swale at thenorthern end of the pond. The swale is roughly100 feet wide and about a foot higher than thenormal pond level. During large storm flowsthis area would act as an emergency spillway,conducting discharge down Beach Street intoBramanville.

b. Experience Data. Hydraulic records are notavailable for this dam, however, residentsrecall some local flooding over the road at

BRIERY POND DAM

17

.. .. . . . . :.. . .. , . . . .. .. . . . .. . . . i I I l .. i - - i i l l

the south abutment of the dam during the 1938storm, and also in the natural swale duringthe 1955 floods.

c. Visual Observations. At the time of theinspection the flashboards had been removedfrom Outlet A but the gate was closed andwater was flowing over the top into the outletchannel. The gate and channel are inadequatelysized considering that presently it is theonly operable outlet at the pond and there isno spillway. Outlet B at the dam, althoughclosed, is leaking. With no permanent mecha-nism for operating the gate the structure isuseless for emergencies.

d. Overtopping Potential. As noted previously,overtopping of the dam and dike is expectedunder the test flood. In addition, hydrauliccomputations show that the dike would be over-topped even with a 45 percent reduction intest flood outflows as a result of availablestorage at Singletary Pond. Failure of thedike would produce a flood flow of 570 cfs,with a resulting flood wave height of 2 to 3feet. Failure of the dam during a peak floodwould produce initial outflow on the order of2,780 cfs. The volume from Brierly Pondcould add 8 feet of water to the Mayo Pondbasin.

BRIERLY POND DAM

18

SECTION 6

STRUCTURAL STABILITY

6.1 Evaluation of Structural Stability

a. Visual Observations. The evaluation of thestability of Brierly Pond Dam is based on thevisual inspection conducted on August 23, 1978.As discussed in Section 3, Visual Inspection,the embankments of the dam and dike aregenerally in good condition, and not considereda hazard. However, the small size of theoutlet at the dike, and the lack of a permanentoperating mechanism at Outlet B at the damindicate a possibly hazardous situation.

b. Design and Construction Data. There are noplans, specifications or computations avail-able on the design, construction or repair ofthis dam from the Owner, County, or Stateoffices. Furthermore, information does notappear to exist on the type, shear strength,and permeability of the soil and/or rockmaterials of the embankment. The West MainStreet highway embankment is probably of localsand and gravel fill without any type of coreor cut-off wall.

c. Operating Records. There is no evidence thatinstrumentation of any type was ever installedin Brierly Pond Dam. The performance of thisdam under prior loading can only be inferred byphysical evidence at the site.

d. Post-Construction Changes. There are no as-built drawings available for Prierly Pond Dam.There is no Information available on the typeof conduit or the location of the outlets tothe mill.

e. Seismic Stability. The dam is located inSeismic Zone No. 2 and in accordance with PhaseI "Recommended Guidelines" does not warrantseismic analyses.

BRIERLY POND DAM

19

SECTION 7

ASSESSMENT, RECOMMENDATIONS,AND REMEDIAL MEASURES

7.1 Dam Assessment

a. Condition. Brierly Pond Dam was neitherdesigned nor constructed according to currentstate-of-the-art procedures. Based upon thevisual inspection of the site, the lack ofengineering data, operational or maintenanceinformation, there are deficiencies which mustbe corrected to assure the continued perfor-mance of this dam. Generally, the dam isconsidered to be in fair condition. There isno spillway at the site other than overflow atoutlet gate A at the dike. There is nopermanent mechanism to operate the gate atoutlet B at the dam. There were severalproblem areas observed at the site: erosionalong the slopes of the dam, irregular anddisplaced riprap, and the collapsed wall onthe upstream face of the dam; leakage aroundthe closed gate of outlet B; seepage in thetailrace downstream of the dam; and overgrowthof vegetation on the dam, the dike, and overthe discharge channel from the spillway.

Hydraulic analyses indicate that the outletstructure at the dike, which serves as a spill-way can discharge a flow of 180 cfs when thegate is fully opened and the water surface isat El 519 (the low point on the dam). Thismeans that the outlet is adequate for only 7percent of the test outflow of 2,650 cfs.

b. Adequacy. The lack of in-depth engineeringdata did not allow for a definitive review.Therefore the adequacy of this dam could notbe assessed from the standpoint of reviewingdesign and construction data, but is basedprimarily on visual inspection, past perfor-mance history and engineering judgment.

c. Urgency. The recommendations and remedialmeasures outlined below should be implemented

BRIERLY POND DAM

20

by the Owner within 2 years after receipt ofthis Phase I Inspection Report.

d. Need for Additional Investigations.Additional investigations to further assessthe adequacy of the dam are outlined below inSection 7.2. Recommendations.

7.2 Recommendations. In view of the concerns overthe continued performance of the dam, dike, andoutlet works it is recommended that the Owneremploy a qualified consultant to:

a. Conduct a more detailed hydrologic andhydraulic investigation to design an adequatespillway.

The recommendations on repairs and maintenanceprocedures are outlined below under Section 7.3,Remedial Measures.

7.3 Remedial Measures

a. Operating and Maintenance Procedures. Thedam and appurtenance structures are not ade-quately maintained. It is recommended thatthe Owner accomplish the following:

(1) construct a permanent operating mechan-ism for opening the gate on the low-level outlet at the dam (Outlet B).

(2) repair the leak through the gate, andthe spalled concrete at Outlet B.

(3) repair the riprap and erosion on theupstream face of the dam and clear thevegetation.

(4) repair the stone walls in the approachchannel, and the railing on the walkwayat Outlet A.

(5) clear the trees and vegetation on thedike and along the outlet channel.

(6) implement a systematic program of main-tenance inspections. As a minimum, theprogram should consist of a monthlyinspection of the dam and appurtenances,

BRIERLY POND DAM

21

supplemented by additional inspectionsduring and after severe storms. Allrepairs and maintenance should be under-taken in accordance with all applicableState regulations.

(7) institute a definite plan for surveil-lance and a warning system duringperiods of unusually heavy rains and/orrunoff.

(8) Technical inspections of this dam shouldbe conducted on an annual basis.

7.4 Alternatives. An alternative to implementing therecommendations and maintenance procedures listedabove would be to drain the pond and breach orremove the dam.

BRIERLY POND DAM

22

APPENDIX A

PERIODIC INSPECTION CHECKLIST

BRIERLY POND DAM

PERIODIC INSPECTION

PARTY ORGANIZATION

PMo:JECT feI j P bai DATE .3-23 79TIME I-3o i SQO p,, I

WEATHER 5L nr .L 9 F

W.S. ELEV. 517. o U.S.

Ed -- 6. Freir'Ak- .v,okl

.Lqlc t8r'cictco 7. tle, Lcrcl

S ,('rC e 8.

CrG [ LL~eet 9._ _ _ _ _

PIOJECT FEATJRE INSPECTED BY REMAhK,'

t)C ,, t D-c C.c-,, -SLc P CI C

!S12-1 I 4 I &'rec,-, L te 6r ,oaqc,-)

LI

71

I.__________ __________________________________________________

1.

PERIODIC INSPECTION CHECK LIST

PROJECT Bre.-!,j Pcod DATE S -25-B

PROJECT FEATURE bonm NAME 6, -reei

DISCIPLINE (_(1-enreoI NAME

AREA EVALUATED CONDITIONS

DAM EMBANKMENT fo ofion i s West main f-cad

Crest Elevation

Current Pool Elevation 517.0

M11aximum Impoundment to Date uricw,

.urface Cracks none

Pavement Condition povemeni- On West- moln 1.cd

,;ovement or Settlement of Crest

Lateral Movement fos- Ujoll oe- LAjrr,ci bw 1clin

.rt Ical Alignment -lat i Od ircc4_

Horizontal Alignment stt', gt, ecepr Ct 1fltrrsel-,'

Conuition at Abutment and at dto t- ,ftO OatkArcI 5c(-'nd

*oncrete Structuresat obatWrl-%

7:ndications of Movement of no mveeet'Structural Items on Slopes

Trespassing on Slopes eirnIr' pose, p.e Ip, 4-pr xh- i ijehailint fene -air Lesr, tia, fee.

Sloughing or Erosion of Slopes !AL,- kAMrm crN ily Tr-um (ie.or Abutment.-

Rock Slope Protection - Riprap rOrXOM Zt*n)es onr u sTreom k-

Failures

Unusual Movement or Cracking at do,-)rtecr?' tvc' not vs, blrc, l ,,.9or near Toes nut ,nlv- ic-ted Inscl

Unusual Embankment or Downstream !Sele -q ir tculrceC , behtf ill

Seepage U ,Id1 9

Piping or Boils 110rW vIS, ble

Foundation Drainage Features n v,&bi

Toe :rains nitn vbe

ri-;tr imentiation )stmWe. . , , . 2 .

PERIODIC INSPECTION CHECK LIST

PROJECT Orierl- PA-o DATE _ -.3_- _ _ _ _

PROJECT FEATURE Dt'e emtan1iment NAME . -r c0

DISCIPLINE ',m1rehniica NAME

AREA EVALUATED CONDITION

DIKE EMBANKMENT 4 +v 5 fct h11 , IOcwted ateast eo6 o IVrd

Crest Elevation

Current Pool Elevation

Maximum Impoundment to Date Wnlo&on

Surface Cracks non bl 's'b~e

Pavement Condition o l -ar+h

Movement or Settlement of Crest o teare-i

Lateral Movement nOr

Vertical Alignment 4five Iatf"

Horizontal Alignment freotivet, stright

Condition at Abutment and at Cewna af ectst- c aOnbkireneConcrete Structures notbrcl qura ai- wcsrbtLtrbent

Indications of Movement ofStructural Items on Slopes

Trespassing on Slopes .Ogktfh c Cr-esf-

Sloughing or Erosion of Slopes qs, on sloffs cinci (c-,rtor Abutments mno.- C ,)J_

Rock Slope Protection - Riprap !5ttm ,. CI) ,,psrren- 4o',Failures near- 5p,11vLj -, rq,

Unusual Movement or Cracking ator near Toes

Unusual Embankment or Downstream no vis,blcSeepage

Piping or Boils o0x (, oerenf

Foundation Drainage Features roe

Toe Drains none

Instrumentation System non

page c fo

PERIODIC INSPECTION CHECK LIST

PROJECT [ e*,-(q 196r d DATE -2-3-7&

PROJECT FEATURE Q Qkfet NAIE . crev•

DISCIPLINE bcc +ec rccI NAME

AREA EVALUATED CONDITION4OUTLET WORKS - INTAKE CHANNEL AND Cne, ete (no ft'iae;Lv

INTAKE STRUCTURE

a. Approach Channel surged

Slope Conditions

Bottom Conditions

Rock Slides or Falls

Log Boom

Debris

Condition of Concrete Lining

Drains or Weep Holes

b. Intake Structure (!e)rete L(- ho cd t"eOdL6Ii

Condition of Concrete oiv-- .rs,cy-)r-rli

Stop Logs and Slots nc O otro,

Ttn k5 r lret9 -. , , oe. q

Outlet pp eof','s cjcx.sftrecr-r niHb,.,ilon ) oscyxirges ,r~v c c or,, rv)

)t , tm(~ete , 7C-1 .StleC

An a0brtniccjled jntake tyUetuer-40, it e s IOwftted

3o ft. ' . ufsrrmn, 4P'ee

tx , - I c (A ,e lor ft o 0I e r 9 f t

ItCite Pvr)%jE,0c is rWII d

n "4__

PERIODIC INSPECTION CHECK LIST

PROJECT &IQ: Pend DATE '-d.23?5

PROJECT FEATURE -9,lIuet 3 NAME E &rrGc.

DISCIPLINE ._hdr__u __ NAME L. Br nc qq,,i

AREA EVALUATED CONDITION

OUTLET WORKS - SPILLWAY WEIR,APPROACH AND DISCHARGE CHANNELS

a. Approach Channel mortacred 5*)m (X)sCnrj ala enerefe .

General Condition owoC t f a, : rno,tr ond -(cref-c miss" 9

Loose Rock Overhanging 0olChannel

Trees Overhanging Channel I-f2" arxi I-2+" trvee )OtcjCnf0. emc, h

Floor of Approach Channel 5L,-ne,'ed

b. Weir and Training Walls Q orete .)6 tS

General Condition of -w oj.v -, cind ct rjc-, rv)Concrete

Rust or Staining nn e

Spalling

Any Visible Reinforcing rone

Any Seepage or Efflorescence oae

Drain Holes no

c. Discharge Channel

General Condition 5ctd fto r

Loose Rock Overhanging novChannel

Trees Overhanging Channel numerous -tr"s art,(sW%

Floor or Channel possbl 3 hl w4h 5sDes.

Other Obstructions 5 k1,04tiell

+ * 5IICI 9clie 0"hion'ris-, oecreitcA bj Vit-t 'ci pl~-

Z ,,,,aj 4o, 441osibcCords o ,c, .5id; cjofe-

page A5 o f__

APPENDIX B

PLAN OF DAM AND PREVIOUSINSPECTION REPORTS

Page

Figure B-I. Plan of Dam and Section B-I

Figure B-2. Plan of Dike and Outlet B-2

Previous Inspections (Partial Listing) B-3

Inspection Reports by Massachusetts Departmentof Public Works, January, 1972 B-5

BRIERLY POND DAM

. . . .. . . . . . . . " " '.. ... . . ' .. .. .. . . .. . ' ' " . . . . .. . . " ' .. .. .. ' ' .. . .. . . II I| 11 1 1 .. . . . .. . .I II .. . . . . ..II"

-A

ws~v. 5rlcFacm

S-MC -0-0- Ca

SZO 52. W. MAIN~

szo.(x a

LLo~d 1 q MI~ -- LL .33C) LO)VG

-3 -sro-y a,~ cK S~-

36.2 13Lr -~3 Srory

Section~ 1-i

3& to 10 0 'S

(Metf ca E dd~l 1w n

y P0mb/

5)'4 .0 ou)er-ue

Ic FeNCIE *-~LiLEr "3"

K~ STruCTure -Dj Lo K~c

Nsoyes:

2. be-ra.tc (s ONow B3&nSiQ

5ujeej oc Ou,. 23, lI,+3. .W'Z. *benotez -D(e sof Vew

o4ox4'al-

MT=-Ea. @m w iumfm

IATIONAL PONA14 OF INSPECTION Of NON-FEDA

11% FeetSRIERLY POND DANFINK 1-1 ft.U lP

TIUTAV EILMIME liWS WAISAWIII

WAU I'' Tsc~n, IPS

BRIERLYv POND

D EBeao" '*52 0, 3

510.5e-'r :) 5 iW-4-

/- P~ or4* :kWCRa, p

Sao

OA

S.V1 0r

szo A4Z.

Sec.1teov 2-2

W MQAN ST. Crowwm at. So'4-%

ni

Modecate Uegeti-tt

1), KE

'To OC -

Norm.

1. C-Ie aloai sh~oLop c~xc. iegcd

2. Zvzcos S %OWJ 4ror . e(d

0 ,~ zo

-- 30.0

4413,0

2 swisgy. IN. .. aIgis.uuu

Sectsov 3-3 nim- acFtITIONAL PROGRAM Of INSPECTION OF NON-FED. DAMS

BRIERLY POND0 DANPINK 1 -2 PWI w 9191 AnO MS Ml 11

CI)E

\ .. NJ

~~E-

~~V4vt A A ti z 4

1"4 s,,

91 %, I -2 - w r u 4 -

6 To% i

le y I.- *a.00 8 N v j

Rmsu1ZO PASm3 BLAII.sUor nim

c; I~IIN

-. 4-c N4

C. .

Cih

IJ

iz 2&~

,% I

44.on

tQ -0

cct9 'S

A: am' *jva

0'~

~ z~i [I.

-. nSrIQMIMRT &DA6TA FOR DM8 Da e%

His A6dref ef v: L00%t4l&~ Y . Pond:~4,~#~. _

Function of nai: DasG C ~o

Strtxituated ag2= 1P-

Dainhs.rg. q..- -.nd -. .

Caracter -f -. PIRT

Discharge:..~'~, 6~7~IISto47

Don I 5 ral4~ Decrpto of Dom andWO4.S Dichrg M -

0e66 ev /7/ -. 91I

sir'

Date Cement..

B-5

...n11s ONcTXv?QET & DATA FOR DAMS Darn No-, SO-VTosn:

His .&ddress: sq"4 -,fd~' Pond:, 4 s''A.ePFnOtion of Vimr: ' e-" -. - Date: //.e -

U~ca*ioiil& Acaess: W.0 t 75I4o~.A or-/eZ 0_--

DrainAr,:Y.s'?SqXi.; Ponds: io;fes.(kami 77 ensral: c'aCharacter oA, ..-...- PRIOflITT

7stirka1ted . .-

Dischiarge:Capacity:-.leneral Description of Damn and Discharge ControlT

mr.. J/ SC41 Ad-' a6hZ!tzl 7 yw/C

W-I 75-,. -- X/5j

IM~ke'andReoodmincdations:I

* I * t I'

4-'Rateuirnent

Damn No, 3 -'-t (b

B- 6

APPENDIX C

PHOTOGRAPHS

BRIERLY POND DAM

NO. 1 CREST OF DAM

NO. 2 OUTLETS B AND C AT DAM

C-I

NO. 3 SLIDE GATE MECHANISM AND SOUTH END OF DIKE

NO. 4 OUTLET CHANNEL (OUTLET A)

C-2

APPENDIX D

HYDROLOGIC AND HYDRAULIC COMPUTATIONS

BRIERLY POND DAM

i\Jec Na±. Rev' i w AJOIA1 Fe9 c' Acct No. Page .A-ofSubgett WoAiorc shA ~ r,.. Comgtd. By Date '/Detail __ 8IERLY OPO DAAA Ckd. By I Z Date

( 7e rsf Flo 100q,&lffW3Ov", foo'

7' T +d.( OP'dI %Ad a '- v'est. -444 i'

2- Pondcs eS~v4^APs - 7olP., 0707.

0.404

-e,( 4' .wl217'0f

ItoJL Ad ~ 46. ~ LA W40

UOI~es P(A Fla fi.iW.LE.~O

.

Po'md k~s a-,, area aj02- k

IL Si Ie** Plc.Ka tal 0-TE2ro;

,,-rj 1 &jj47. 3 A ci' . 6. :3s,3 3c .f,+a

'7 5-ort~ F 2Ac 4 %'c - 2CA.SC. - a.4

Voeaje Vol, t e c- v1,rAf Lej4

Prjc ,L ecua.&ew .tAJ .Ii.E. .Acct.No J& ff~ Page of-.~

Subject wore-se Mau.~ 4A-Ig -Comptd By Date

Detail le IERL Y POAM DAM -Ck d By Date

~ ~ ~2 . ~ IMe

U Lse P t.Rsb3&4'1 &IAW +W. Pi~ -due 4v rectuca D'..

-res4 Flcjve ea6'wL 2~ctj~L)4 O ~ {

2; W2o - .2&3 S ZC-43 4 D 4

z 4./34

0

ITI

to oo54r*3e.4qc -f4. ?,oo o

D- 2

Project 4.kfll* AcciFie o 3 Page

Subject WAorcesfer MarIr Are&. Compid By_ f Date

Detail !bR(ERLY Po AjD CPAAM Ck d By -Da-e L/ /-7Dat

© A~e~1 leoar e IqC/fG11" - Ors 4-1ev -

Oi.5,c4&ve0d ___E

#MdX t e! d ~dcve'f/

a RI, ILz;0

0 -t dJ

a V1,-L -- a- tk&1 c4w pic D

JASC.~~~~cU~eO

w T-F

o 'o> t0- 4,: .:) 54z'e j- 4C e feef

Project A/nk iev. e{A/os1eintDapk-f Acct N.,6o Page .of

Subject /o vces Ae rMasgs. AV'E& Comptd By Z-C6 -Date _________

Detail 8RtIE-PLY e4MO PAAA Ckd By_________ Date /2L-CL

P- I fure 0 t 19, v w. A4t P,dC ~,II & -p oCrrJ

su#46, je-f 6,*.re olo4,ic t-(e. 7.

rA 0-0 e'/Etd ii, O/o ri

Ig( r 570 LS.

wqc 4440 itre~. oa t4co0 v4.o 4, r, Si e~ ~ OL is u dC- A

lot~1 )OLAdi I P,~ dv a R(.A redu.ce-

41- U U~

hI lwV/

@ Car" J Av( r-.f-f4l

A v 1Cw(FlV

D-4

Project t~~f PeVOW Of "16A Qfju oA T Acct No Page of___

Subject lWprce4ft AI 04&0- Comptd By Da)te 9 1

Detail epla'ty Jtw DAM -Ck d By_____ Date o

4 Cu*ti C rcJpOJ~l(VC)# Cre.J (Z 6W4 -48,wlite

(~cZ6I r/0. 47.~$7O 5~

Amdl C7.0' 10 5*s~i

z~.Z c77c. 2 ,c~c4 S 1 5- swsd.. r4 --oI /,2

IL Re , 1.-4v

J

H" -, 4 14~ 4r

.4 U2 1.1,rq.-3 Tr 3 S

14- 59

APPENDIX E

INFORMATION AS CONTAINED IN THE

NATIONAL IN'VENTORY OF DAMS

BRIERLY POND DAM

L)2

Lo CP

IAA

- z Cc z z

(t 0 4c

di z o 'D

4' 0 m -

am t

a p.

w w

12 D-@, , bea - -go

U ,.1 "1- .. ). .

2 .~ za

cc C 2 It

0 a!

o ~do

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