B E A V E R L A K E · 2019-03-12 · Lee Creek Eucha-Spavinaw Honey Creek Sugar Creek Arkansas...
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265 49 94 62 23 62 16 16 71 71B 264 412 412 23 74 45 74 45 12 12 303 303 62 187 187 187 94 72 264 112 49 295 23 295 62 303 74 170 156 170 Beaver Dam Withrow Springs State Park Hobbs State Park Conservation Area Ozark National Forest Hickory Creek Park Prairie Creek Park Rocky Branch Park Lost Bridge Public Use Area War Eagle Public Use Area Blue Springs Use Area Horse Shoe Bend Public Use Area Starkey Public Use Area Indian Creek Park Pea Ridge National Military Park Bear Hollow Natural Area Dam Site North Park Visitor Center Visitor Center Den State Park Devil’s McIlroy Madison County Wildlife Management Area (WMA) Dam Site Lake Park Dam Site River Park McIlroy Madison County WMA USACE/Beaver Dam Clifty Creek Creek Clifty Big Clear War Eagle Creek War Eagle Creek Richland Creek Drakes Lollars Creek Creek Wharton Creek Henderson Creek Holman Creek Hock Creek Dry Fork Glade Creek Ogden Creek Kecks Creek Jackson Creek Brush Creek Sinking Creek Cave Creek Dry Creek Cherry Creek Fleming Creek West Baldwin Creek Mill Creek Hughes Creek Thomas Creek Thorney Branch Pigeon Creek Turtle Branch Possum Creek Delaney Creek Crosses Creek Cannon Creek Shumate Creek Snake Creek London Creek Hutchins Creek Mill Creek Rock Creek Town Branch Friendship Creek Hickory Creek Nelson Hollow Phillips Creek Monte Ne Branch Coose Hollow Ventris Hollow Ford Creek Indian Creek North Creek Clifty Rambo Creek Hollow Van White River White River Middle Fork White River Fork West Lee Creek Clear Creek Kings River Creek Osage Creek Sulphur City Durham Forum Clifty Alabam Lowell Hindsville Bethel Heights Little Flock Avoca Pea Ridge Prairie Creek Old Alabam Nob Hill Best Georgetown Draketown Wesley Shofner Mill Aurora Witter Japton Burchette Spring Dutton Pettigrew Boston Brashears Crosses Combs Delaney Patrick Lost Bridge Village Bella Vista Sonora Johnson CRAWFORD WASHINGTON MADISON M ADISON CARROLL JOHNSON FRANKLIN CARROLL BENTON BENTON WASHINGTON Lake Fayetteville Lake Elmdale Lake Sequoyah Hindsville Lake Lake Atalanta Lake Wilson Lake Leatherwood Kessler Round Top Miller Stevenson Washburn McCullom Sugar Everett Bloyd Lingebaugh Henderson Denny Brown Hammond Hobbs Snyder Round White Oak McCullah Hill Chicken Bristle Bushart Roundtop Faulkner Eubanks Grose Boyd Trammel Gilliam Round Benson Vaughan Been Robinson Millsaps Puddin Hill South Archibald Harp Price Webber Fitzgerald Raid Mt. Sequoyah Keefer Tater Hill Kenars Sandstone Samuel Swain Polecat Bluff Field Buck Pond Grindstone Miles Panorama Point Carlock Garfield Trimble Humphery Pond Rich Glasscock Henry Williams Elkhorn Round Bohannan Reynolds Allen Knob Keck Knob Barker Knob Pool Knob High Davey Chimney Rock Isaac Knob Mahaffey Knob Allard Parker Boone Baker Knob Anderson Knob Brannon Vandeventer Parker Hill Ledbetter JacksonKnob Panther Knob Jones Hare Fly Gap Whiting Potato Knob Phelps Garrett Mountain Pierce Washington Weedy Rough Rolloff Gentry Wakefield Government Knob Hall Whittmore Sugar Tree Burrell Hoyle Posy Sugar Loaf Sugar Big Sandy Diera Moore 3D21 “Two Ton” Benton/Washington Regional Public Water Authority Carroll-Boone Water District Madison County Regional Water District Former Water Supply Former Water Supply Former Water Supply Former Water Supply Little Ole Opry Riverside Park Bluegrass at Brentwood Community Center Old Pumphouse War Eagle Mill Larue Highest Point In Ozark National Forest Terra Studios Pig Trail Bypass Cafe & Grocery White River Headwaters War Eagle Creek Headwaters Old Main Washington Elementary UA Razorback Stadium Kessler Mountain Reserve & Outdoor Classroom Devil’s Eye Brow Natural Area Draketown Hotel Beaver Lake Project Office War Eagle Cavern Blackburn Creek Watchable Wildlife Area Former Water Supply Drake Field 1954 1966 1973 1982 1992 1958 US Water Supply Act Passes Beaver Dam Construction Approved 1959 1960 Dam/Lake/ Springdale Intake & JM Steele Plant Completed To Treat 10 Million Gallons Per Day (MGD) 1970 “Two-Ton” Benton/Washington Regional Public Water Authority (BWRPWA) Formed 1975 1957 1968 1972 1985 CBWD Provides Water To Harrison 1993 Madison County Regional Water District (MCRWD) Comes Online At 3 MGD & BWD Hardy Croxton Plant Goes Into Service With 40 MGD Capacity 1998 1999 “Two-Ton” BWRPWA 4 MGD Capacity Serves 1st Customers & CBWD 2nd Treatment Plant Expansion To 18 MGD Capacity BWD New Raw Water Intake Completed 2007 • BWD Steele Plant Renovation • New Admin Bldg Construction • “Two-Ton”/BWRPWA Expansion To 24 MGD 2009 2011 Beaver Watershed Alliance Formed FUTURE US Congress Authorizes Beaver Dam Construction 1949 Beaver Dam Association Forms Hardy Croxton MCRWD Increases Capacity To 6.4 MGD 2005 AR Act 114 Allows Water Districts To Form BWD Intake BWD Assumes Operating Control of Steele Plant. Carroll & Boone Water Districts Form Madison County Water Facilities Board Organized Carroll & Boone Water Districts Merge To Form CBWD with 6 MGD Capacity WR Vaughn H Douglas H Croxton J McRoy JM Steele C Little First BWD Board of Directors Steele Plant Beaver Dam Construction rogersarkansas.com Beaver Water District (BWD) Established Beaver Dam & Water District Intake Construction Begins New BWD Intake BWD Administration & Water Education Center NORTHWEST ARKANSAS PUBLIC WATER SUPPLY DEVELOPMENT PROJECT HISTORY NORTHWEST ARKANSAS PUBLIC WATER SUPPLY DEVELOPMENT PROJECT HISTORY BWD Steele Plant & New Admin Bldg Dedicated 2012 BWD Water Education Center Dedication Honors John M. Lewis (BWD Board Of Directors 1975-2007) BWD To Expand To 220 MGD & Build Western Corridor Pipeline & Hub BWD Intakes Old New 2006 BWD Hardy Croxton Adds 50 MGD Lake Fills To 1120 Ft MSL Beaver Dam & Lake rogersarkansas.com 1971 BWD Steele Plant Expanded to 25 MGD Capacity 1978 BWD Provides Water To All 4 Major Cities of Springdale Rogers, Bentonville, & Fayetteville BWD Steele Plant Expanded to 50 MGD Capacity CBWD Provides Water To Eureka Springs & Berryville Shiloh Museum of Ozark History THE U.S. ARMY CORPS OF ENGINEERS CONSTRUCTED BEAVER DAM ON THE WHITE RIVER TO CREATE BEAVER LAKE THE U.S. ARMY CORPS OF ENGINEERS CONSTRUCTED BEAVER DAM ON THE WHITE RIVER TO CREATE BEAVER LAKE BEAVER LAKE IS A MULTIPURPOSE WATER STORAGE RESERVOIR SUMMER STRATIFICATION FALL TURNOVER THERMOCLINE Rapid Warm To Cold Transition with Depth HYPOLIMNION Cold/High Density Air Temperature Drops. Winds Cool & Stir Surface Layer EPILIMNION Warm/Low Density Cooler, More Dense Water Sinks Relatively Uniform Density & Cold Temperature Lakes and reservoirs that stratify and mix once a year are “Monomictic.” Beaver Lake stratifies or separates into layers of contrasting water temperatures and densities in Summer. Mixing occurs during the“Fall Turnover”as decreasing air temperature and winds cool water in the epilimnion, causing it to become more dense and sink to the bottom where it displaces water in the hypolimnion. B y S in k in g S u rfa c e W a t e r BEAVER LAKE TEMPERATURE RANGES SURFACE BOTTOM Winter 32°-45°F 37°-40°F SUMMER STRATIFICATION & FALL”TURNOVER” W a t e r D i s p la c e d Original Diagram Source: nysparksnaturetimes.com/tag/lake-turnover/ WINTER UNIFORM Summer 78°-90°F 39°-45°F RESERVOIR CHARACTERISTICS INFORMATION SOURCES: BEAVER WATER DISTRICT (www.bwdh2o.org) • US ARMY CORPS OF ENGINEERS/BEAVER LAKE (www.swl.usace.army.mil/Missions/Recreation/Lakes/Beaver-Lake/) • TOP OF CONSERVATION POOL: 1120.43 MSL • AVERAGE DEPTH: 60 ft = 18.3 m • DEPTH AT DAM: 228 ft = 69 m • MAXIMUM DEPTH: 240 ft = 73 m • LENGTH HWY 45 TO DAM: 49.7 mi = 80 km • SHORELINE: 449 mi = 722.6 km • SURFACE AREA: 44 mi 2 = 114 km 2 = 28,220 Acres • LAKE CAPACITY: 635.9 Trillion Gallons • TOTAL MAXIMUM AUTHORIZED WATER SUPPLY WITHDRAWAL PER DAY: 147.5 MGD (BWD=135 MGD, BWRPWA=4 MGD, CBWD=6 MGD, MCRWD=2.5 MGD) BEAVER LAKE FACTS BEAVER LAKE FACTS Source: USACE/Little Rock District/Beaver Lake Project Office Source: www.bwdh2o.org/BEAVER LAKE/Lake Data • Widest, Deepest Section • Minimal to Negligible Current • Summer Stratification Upper end is river-like. Mid-section is a transition zone. Lower end lake-like. RIVERINE TRANSITION LACUSTRINE Light Penetrates, Pollutants/Nutrients Accum ulate, Algae Grows Wider , Flow Velocity Slow s, Particles Settle, Less Turbid Seasonal Mixing Winds Mix STRATIFICATION - Formation of layers TURBIDITY - Water clarity or cloudiness related to particles suspended in the water. Narro w e r , S tr ong C u r r e n t, T u r b u l e n c e Mixing, S u s p e n d ed P a r t i c l e s, Hi g h T u r b idity • Low Sedimentation & Nutrient Concentrations • Lowest Turbidity/Highest Clarity • Fish Passage Blocked Decay Depletes Oxygen Bottom H a b it a t B u ri e d U n d e r D eposits o f S e di m e nt & D e c a yi n g Alg a e & Plant D ebr is Temperature Increases, W ater Quality D im inish e d Outflow to river below dam 2015 DATA WATER FLOW IN: 657 billion gallons WATER REMOVED “Used/Lost” (Gallons): • Power Generation: 350 billion • Water Supply: 24.5 billion • Released Over Spillway: 122 billion • Evaporation: 31 billion • Unknown Means of Loss: 8.3 billion TOTAL: 535.3 billion HYDRAULIC RETENTION TIME: It takes about 1.0 to 1.5 years for water to move through Beaver Reservoir. 2015 DATA Beaver Water District L E G E N D L E G E N D Rain Garden Point of Interest Mountain Town Park 45 State Highway 49 412 Interstate County Line Watershed Boundary Urban Area Public Land U.S. Highway Streams Waterbody Regional Water Providers White River WS USACE United States Army Corps of Engineers WR Watershed MSL Mean Sea Level Beaver LakeSmart Secch Day USGS Streamflow & WQ WATER QUALITY (WQ) MONITORING SITES Arkansas Department of Environmental Quality Arkansas Department of Pollution Control & Ecology Environmental Protection Agency Beaver Water District More Information Available at: beaverwatershedalliance.org • bwdh2o.org • beaverlakesmart.org MGD Million Gallons/Day DRAINAGE PATTERN: Dendritic or Tree- like with Small Branch Streams Flowing to a Main Trunk Stream NW ARKANSAS WATERSHED NEIGHBORS NW ARKANSAS WATERSHED NEIGHBORS BEAVER LAKE WATERSHED FACTS PRECIPITATION: Annual Average = 46.6 Inches Runoff To Streams & Lakes: 14 - 20 Inches ELEVATION ABOVE MEAN SEA LEVEL: Maximum: 2497 Feet = 761 Meters Minimum: 925 Feet = 282 Meters AREA: 1186 mi 2 = 3072 km 2 = 759,040 Acres STREAM FLOW Maximum: March-May Minimum: July - October WATERSHED PRIORITY ISSUES: • Since Beaver Dam was built in the 1960s, the population of NW Arkansas has grown from less than 100,000 to over 500,000 and is projected to surpass 800,000 by 2040. • Rapid population growth, expanding development, and increasing demand for water affect and continue to impact source streams and Beaver Lake. • Lake water quality is still good, but under stress due to rising levels of sediment and algae-feeding nutrients. • 45% of the watershed is ranked moderate to severe in erosion hazard potential. • 78% of the watershed is very limited for conventional septic system suitability. TEMPERATURE: 2015 was the 24th warmest year on record since 1895 with an average temperature of 57.9°F = 14.4° C. Other 1% Forest 60% Pasture 29% Water 4% Urban 6% BEAVER LAKE WATERSHED NATIONAL LAND COVER DATA 2011 8-Digit Hydrologic Unit Code (HUC) Watershed Map Mulberry/Frog Bayou Illinois River Upper White River Lee Creek Eucha-Spavinaw Honey Creek Sugar Creek Arkansas Missouri Arkansas Oklahoma WATERSHEDS WATERSHEDS Watersheds are separated by topographic divides off which water flows to one side or the other. Like stacking bowls, a watershed may be part of one that is larger and also have any number of smaller “SUB-WATERSHEDS” inside it. MISSISSIPPI RIVER WATERSHED Area = 1,245,000 mi 2 = 3,224,535.2 km 2 Drains 41% of the continental US Gulf of Mexico northward into Missouri, then south to the lowest point in its watershed, where it empties into the MISSISSIPPI RIVER. The WHITE RIVER flows 722 miles from its HEADWATERS near Boston, Arkansas in the Beaver Lake Watershed, WHITE RIVER WATERSHED Area = 5,184 mi 2 = 13426.5 km 2 Richland Creek WS Beaver Lake- White River WS War Eagle Creek WS Headwaters of WR WS West Fork-WR WS Middle Fork-WR WS Lake Sequoyah-WR WS BEAVER LAKE WATERSHED FACTS BEAVER LAKE WATERSHED Source water from 7 sub-watersheds flows into Beaver Lake/White River. 6 B E A V E R L A K E W A T E R S H E D B E A V E R L A K E W A T E R S H E D
Transcript of B E A V E R L A K E · 2019-03-12 · Lee Creek Eucha-Spavinaw Honey Creek Sugar Creek Arkansas...
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Beaver Dam
WithrowSprings
State Park
Hobbs State ParkConservation Area
Ozark National Forest
Hickory CreekPark
Prairie CreekPark
Rocky BranchPark
Lost Bridge PublicUse Area
War EaglePublic Use Area
Blue SpringsUse Area
Horse Shoe BendPublic Use Area
Starkey PublicUse Area
Indian Creek Park
Pea Ridge NationalMilitary
Park
Bear HollowNatural Area
Dam Site North Park
Visitor Center
Visitor Center
DenStatePark
Devil’s
McIlroyMadison County
Wildlife Management
Area(WMA)
Dam Site Lake Park
Dam Site River Park
McIlroyMadisonCountyWMA
USACE/Beaver Dam
CliftyCreek
Creek
CliftyBig
Clear
War
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Creek
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EagleC
reek
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Creek
Drakes
Lollars Creek
Creek
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Glade
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Hickory Creek
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Monte Ne Branch
Coos
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Clifty
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Forum
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Alabam
Lowell
Hindsville
BethelHeights
Little Flock
Avoca
PeaRidge
PrairieCreek
Old Alabam
Nob Hill
Best
Georgetown
DraketownWesley
ShofnerMill
Aurora
Witter
Japton
BurchetteSpring
Dutton PettigrewBoston
Brashears
Crosses
Combs
DelaneyPatrick
LostBridgeVillage
BellaVista
Sonora
Johnson
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Lake Sequoyah
HindsvilleLake
LakeAtalanta
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LakeLeatherwood
Kessler
Round TopMiller
StevensonWashburn
McCullom
Sugar
Everett
BloydLingebaugh
Henderson
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SnyderRound
White Oak
McCullahHill
ChickenBristle
Bushart
Roundtop Faulkner
Eubanks
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Puddin HillSouth
Archibald
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Keefer
Tater Hill
Kenars
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Polecat
Bluff Field
Buck
Pond
Grindstone
Miles
PanoramaPoint
Carlock
Garfield
Trimble
Humphery
Pond
Rich
Glasscock
Henry
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Round
Bohannan
Reynolds
AllenKnob
Keck Knob
Barker Knob
Pool Knob
High Davey
Chimney Rock
IsaacKnob
MahaffeyKnob
Allard
Parker
Boone
BakerKnob
AndersonKnob
Brannon
Vandeventer
Parker HillLedbetter
JacksonKnob
Panther Knob
Jones
HareFly GapWhiting
Potato Knob
Phelps
GarrettMountain
Pierce
Washington
Weedy Rough
Rolloff
Gentry
Wakefield
GovernmentKnob
Hall
Whittmore
Sugar Tree
Burrell
Hoyle
Posy
SugarLoaf
Sugar
Big Sandy
Diera
Moore
3D21
“Two Ton”Benton/Washington Regional PublicWater Authority
Carroll-Boone Water District
Madison County RegionalWater District
Former Water Supply
Former Water Supply
Former Water Supply
Former Water Supply
LittleOle Opry
RiversidePark
Bluegrass atBrentwood Community
Center
Old Pumphouse
War Eagle Mill
Larue
Highest Point InOzark National
Forest
TerraStudios
Pig Trail BypassCafe & Grocery
White RiverHeadwaters
War Eagle CreekHeadwaters
OldMain
WashingtonElementary
UARazorbackStadium
Kessler Mountain Reserve
& Outdoor Classroom
Devil’s Eye BrowNatural Area
Draketown Hotel
Beaver LakeProject Office
War EagleCavern
Blackburn CreekWatchable Wildlife Area
Former Water Supply
DrakeField
1954 1966
1973
1982 19921958
US Water Supply Act Passes
Beaver Dam Construction
Approved
1959
1960
Dam/Lake/Springdale Intake & JM Steele Plant
CompletedTo Treat 10 Million
Gallons Per Day (MGD)
1970
“Two-Ton” Benton/Washington Regional Public Water Authority (BWRPWA) Formed
19751957
1968 1972
1985
CBWD Provides Water To Harrison
1993
Madison County Regional Water District (MCRWD)
Comes Online At 3 MGD & BWD Hardy Croxton Plant Goes Into Service With 40
MGD Capacity
1998
1999
“Two-Ton” BWRPWA4 MGD Capacity
Serves 1st Customers & CBWD 2nd
Treatment Plant Expansion To 18 MGD
Capacity
BWD New Raw Water Intake Completed
2007
• BWD Steele Plant Renovation • New Admin Bldg Construction • “Two-Ton”/BWRPWA Expansion To 24 MGD
2009 2011
Beaver Watershed
Alliance Formed
FUTURE
US Congress Authorizes
Beaver Dam Construction
1949
Beaver Dam Association
Forms
Hardy Croxton
MCRWD Increases Capacity To 6.4 MGD
2005
AR Act 114 Allows Water
DistrictsTo Form
BWD Intake
BWD Assumes Operating Control of Steele Plant. Carroll
& Boone Water Districts Form
Madison County Water
Facilities Board Organized
Carroll & Boone Water Districts Merge To Form CBWD with 6
MGD Capacity
WR Vaughn H Douglas H Croxton J McRoy JM Steele C LittleFirst BWD Board of Directors
Steele Plant
Beaver Dam Constructionrogersarkansas.com
Beaver Water
District (BWD)
Established
Beaver Dam & Water
District Intake Construction
Begins
New BWD Intake BWD Administration & Water Education CenterNORTHWEST ARKANSAS PUBLIC WATER SUPPLY DEVELOPMENT PROJECT HISTORY
NORTHWEST ARKANSAS PUBLIC WATER SUPPLY DEVELOPMENT PROJECT HISTORY
BWD Steele Plant & New Admin Bldg Dedicated
2012
BWD Water Education Center Dedication
Honors John M. Lewis(BWD Board Of
Directors 1975-2007)
BWD To Expand To 220 MGD & Build Western Corridor
Pipeline & Hub
BWD Intakes
Old New 2006
BWD Hardy Croxton Adds 50 MGDLake
Fills To 1120 Ft
MSL
Beaver Dam & Lakerogersarkansas.com
1971
BWD Steele Plant
Expanded to 25 MGD Capacity
1978
BWD Provides Water To All 4 Major Cities of
Springdale Rogers, Bentonville, &
Fayetteville
BWD Steele Plant
Expanded to 50 MGD Capacity
CBWD Provides Water To
Eureka Springs & Berryville
Shiloh Museum of Ozark History
The U.S. Army CorpS of engineerS ConSTrUCTed BeAver dAm on The WhiTe river To CreATe BeAver LAke The U.S. Army CorpS of engineerS ConSTrUCTed BeAver dAm on The WhiTe river To CreATe BeAver LAke
BEAVER LAKE IS A MULTIPURPOSE WATER STORAGE RESERVOIR
SUMMER STRATIFICATION FALL TURNOVER
THERMOCLINERapid Warm To Cold
Transition with Depth
HYPOLIMNIONCold/High Density
Air Temperature Drops. Winds Cool & Stir Surface LayerEPILIMNION
Warm/Low DensityCooler, More Dense Water Sinks
Relatively UniformDensity & Cold Temperature
Lakes and reservoirs that stratify and mix once a year are “Monomictic.” Beaver Lake stratifies or separates into layers of contrasting water temperatures and densities in Summer. Mixing occurs during the“Fall Turnover”as decreasing air temperature and winds cool water in the epilimnion, causing it to become more dense and sink to the bottom where it displaces water in the hypolimnion.
By Sinking Surface Water
BEAVER LAKETEMPERATURE RANGES
SURFACE BOTTOM Winter 32°-45°F 37°-40°F
SUMMER STRATIFICATION & FALL”TURNOVER”
Water Displaced
Original Diagram Source: nysparksnaturetimes.com/tag/lake-turnover/
WINTER UNIFORM
Summer 78°-90°F 39°-45°F
RESERVOIR CHARACTERISTICS
INFORMATION SOURCES: BEAVER WATER DISTRICT (www.bwdh2o.org) • US ARMY CORPS OF ENGINEERS/BEAVER LAKE (www.swl.usace.army.mil/Missions/Recreation/Lakes/Beaver-Lake/)
• TOP OF CONSERVATION POOL: 1120.43 MSL• AVERAGE DEPTH: 60 ft = 18.3 m• DEPTH AT DAM: 228 ft = 69 m• MAxIMUM DEPTH: 240 ft = 73 m• LENGTH HWY 45 TO DAM: 49.7 mi = 80 km• SHORELINE: 449 mi = 722.6 km• SURFACE AREA: 44 mi2 = 114 km2 = 28,220 Acres• LAKE CAPACITY: 635.9 Trillion Gallons• TOTAL MAxIMUM AUTHORIzED WATER SUPPLY WITHDRAWAL PER DAY: 147.5 MGD (BWD=135 MGD, BWRPWA=4 MGD, CBWD=6 MGD, MCRWD=2.5 MGD)
BEAVER LAKE FACTSBEAVER LAKE FACTS
Source: USACE/Little Rock District/Beaver Lake Project Office
Source: www.bwdh2o.org/BEAVER LAKE/Lake Data
• Widest, Deepest Section• Minimal to Negligible Current• Summer Stratification
Upper end is river-like. Mid-section is a transition zone. Lower end lake-like. R I V E R I N E T R A N S I T I O N L A C U S T R I N E
Light Penetrates, Pollutants/Nutrients Accumulate, Algae Grows
Wider, Flow Velocity Slows, Particles Settle, Less Turbid
SeasonalMixing
WindsMix
STRATIFICATION - Formation of layersTURBIDITY - Water clarity or cloudiness related to particles suspended in the water.
Narrower, Strong Current, TurbulenceMixing, Suspended Particles, High Turbidity
• Low Sedimentation & Nutrient Concentrations• Lowest Turbidity/Highest Clarity• Fish Passage Blocked
Decay Depletes OxygenBottom Habitat Buried Under Deposits of Sediment & Decaying Algae & Plant Debris
Temperature Increases, Water Quality Diminished
Outflow to river below dam
2015 DATAWATER FLOW IN: 657 billion gallonsWATER REMOVED “Used/Lost” (Gallons): • Power Generation: 350 billion • Water Supply: 24.5 billion • Released Over Spillway: 122 billion • Evaporation: 31 billion • Unknown Means of Loss: 8.3 billion TOTAL: 535.3 billion HYDRAULIC RETENTION TIME: It takes about 1.0 to 1.5 years for water to move through Beaver Reservoir.
2015 DATA
BeaverWaterDistrict
L E G E N D L E G E N D
Rain Garden
Point of Interest
Mountain
Town
Park
45State
Highway
49
412
Interstate
CountyLine
Watershed Boundary
Urban Area
Public Land
U.S. Highway
Streams Waterbody
RegionalWater Providers
White RiverWS
USACEUnited StatesArmy Corps of Engineers
WRWatershed
MSL Mean SeaLevel
BeaverLakeSmart
Secch Day
USGSStreamflow & WQ
WATER QUALITY (WQ)MONITORING SITES
ArkansasDepartment of EnvironmentalQuality
ArkansasDepartment of Pollution Control & Ecology
Environmental Protection Agency
Beaver Water District
More Information Available at:beaverwatershedalliance.org • bwdh2o.org • beaverlakesmart.org
MGDMillion Gallons/Day
DRAINAGE PATTERN:
Dendritic or Tree-like with Small
Branch Streams Flowing to a Main
Trunk Stream
NW ARKANSASWATERSHED NEIGHBORS
NW ARKANSASWATERSHED NEIGHBORS
BEAVER LAKEWATERSHED FACTS
PRECIPITATION:Annual Average = 46.6 InchesRunoff To Streams & Lakes: 14 - 20 Inches
ELEVATION ABOVE MEAN SEA LEVEL: Maximum: 2497 Feet = 761 Meters Minimum: 925 Feet = 282 Meters
AREA: 1186 mi2 = 3072 km2 = 759,040 Acres
STREAMFLOW
Maximum: March-MayMinimum:
July - October
WATERSHED PRIORITY ISSUES:
• Since Beaver Dam was built in the 1960s, the population of NW Arkansas has grown from less than 100,000 to over 500,000 and is projected to surpass 800,000 by 2040.
• Rapid population growth, expanding development, and increasing demand for water affect and continue to impact source streams and Beaver Lake.
• Lake water quality is still good, but under stress due to rising levels of sediment and algae-feeding nutrients.
• 45% of the watershed is ranked moderate to severe in erosion hazard potential.
• 78% of the watershed is very limited for conventional septic system suitability.
TEMPERATURE: 2015 was the 24th warmest year on record since 1895 with an average temperature of 57.9°F = 14.4° C.
Other 1%
Forest 60%
Pasture 29%
Water 4%Urban 6%
BEAVER LAKE WATERSHEDNATIONAL LAND COVER DATA
2011
8-Digit Hydrologic Unit Code (HUC) Watershed Map
Mulberry/Frog Bayou
Illinois River
Upper White River
Lee Creek
Eucha-Spavinaw
Honey CreekSugar Creek
ArkansasMissouri
Ark
ansa
sO
klah
om
a
WATERSHEDSWATERSHEDS Watersheds are separated
by topographic divides off which water flows to one side or the other.
Like stacking bowls, a watershed may be part of one that is larger and also have any number of smaller “SUB-WATERSHEDS” inside it.
MISSISSIPPI RIVER WATERSHED Area = 1,245,000 mi2 = 3,224,535.2 km2
Drains 41% of the continental US Gulf of Mexico
northward into Missouri, then south to the lowest point in its watershed, where it empties into the MISSISSIPPI RIVER.
The WHITE RIVER flows 722 miles from its HEADWATERS near Boston, Arkansas in the Beaver Lake Watershed,
WHITE RIVER WATERSHED Area = 5,184 mi2 = 13426.5 km2
RichlandCreek WS
Beaver Lake-White River WS
War EagleCreek WS
Headwaters ofWR WS
West Fork-WR WS
Middle Fork-WR WS
Lake Sequoyah-WR WS
BEAVER LAKEWATERSHED FACTS
BEAVER LAKE WATERSHEDSource water from 7 sub-watersheds flows into Beaver Lake/White River.
6
B E A V E R L A K EWATERSHED
B E A V E R L A K EWATERSHED
