Putting Dams in Order A Program for Comprehensive Identification and Prioritization of Dam...
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Transcript of Putting Dams in Order A Program for Comprehensive Identification and Prioritization of Dam...
Putting Dams in OrderA Program for Comprehensive Identification and Prioritization of Dam Management Actions
Cathy Marcinkevage AECOM EnvironmentEBC Dam Program Series: Dam Removal and River RestorationJuly 16, 2009
Don Kretchmer, Matt Kennedy, Theresa McGovern AECOM EnvironmentChad Cox GZA GeoEnvironmental, Inc.Jason Benoit Massachusetts Department of Conservation and Recreation
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3AECOM Environment
Introduction
Massachusetts Department of Conservation and Recreation dam inventory: ~300 dams
DCR-owned Dams
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4AECOM Environment
Objective
Prioritize Capital Repairs
DamMAP• Dam Multi-Use Assessment Project
• Screening-level prioritization methodology
Enhancement Actions
Repair and Maintenanc
e
Hydropower RetrofitFish
PassageRemoval Recreation
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5AECOM Environment
Matrix Development
Office of Dam Safety Database
Formal Dam Safety Inspection Reports;
Database Data
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6AECOM Environment
Matrix DevelopmentGIS Data
Department of Conservation and RecreationDam Locations
Ü
0 10 205 Miles
DCR Dam - Non-Water Supply
Town Boundary
National Hydrography Dataset Stream
"
Major Watershed Boundary
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7AECOM Environment
GIS DataQueries with other layers to find out if the dam or impoundment is…
…in a stressed basin? Mass DEP Stressed Basin
…impaired for water quality? Integrated List of Waters (303(d) /305(b))
…historically significant? State Register of Historic Places
…in an urban watershed? MassGIS Land Use
…in sensitive habitat? ACEC, NHESP Priority Habitats of Rare Species and Core Habitats
Matrix Development
DATA
DAM CHARACTERISTIC
S
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8AECOM Environment
Matrix DevelopmentAgency and Outside Consultation
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9AECOM Environment
Matrix EvaluationRisk | Human Uses & Services | Environmental Effects
Engineering risk
Probability of failure
Consequences of failure= *
Developed by GZA GeoEnvironmental, Inc.
DamRisk Index Age
Spillway Capacity Condition
Hazard Classificatio
nDownstream
Risks
Crooked Pond Dam 70 31 100% Good Significant Light Population
Centennial Dam 2480 15 39% Poor High Critical Area
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10AECOM Environment
Risk | Human Uses & Services | Environmental Effects
Commercial/ IndustrialSocietalPublic
SafetyRecreation
DamLake Species in Impoundment
Park Fishing Area
F&W Bass Fishing Area
Lake Fishing Score
Bass Lake Dam Yes Yes Yes 10
No Fish Dam No No No 0
Matrix Evaluation
Dam Historic Site Within Historic District Historic Score
Historic Dam Yes Yes 10
Modern Dam No No 0
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11AECOM Environment
Risk | Human Uses & Services | Environmental Effects
Ecological FunctionHabitat
Instream Flow
Dam
Anadromous Species in Watershed
Passage Structure
Rating
Barriers to Anadromous Fish
Passage
Fish Passage
Score
Barrier Dam Yes Ineffective Barrier 10
Freeflowing Dam Yes Effective No Barrier 0
Matrix Evaluation
Dam% Urban >
10%% Urban >
25%Dam Height >
5 ftDam Height >
15 ft
Sediment Quantity
Score
Large Storage Dam Yes Yes Yes Yes 10
Small Storage Dam Yes No Yes No 7
DegradationBiodiversity
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12AECOM Environment
Priority Lists for Enhancement Actions
Aquatic Habitat
Fish Passage Impact
Flood Control
Flow Augmentation Potential
Habitat Fragmentation Impact
Lake Fisheries
Migratory Fish Impact
Minimum Flow Requirements
Public/Private Abutter Issues
Risk Index
Riverine Fisheries
Sediment Quality
Sediment Quantity
Thermal Impacts
Threatened & Endangered Species
Wetlands
Aquatic Habitat
Fish Passage Impact
Flow Augmentation Potential
Historic Value
Hydropower Potential
Lake Fisheries
Lake Fishing
Migratory Fish Impact
Minimum Flow Requirements
Public/Private Abutter Issues
Risk Index
River Boating
River Fishing
Riverine Fisheries
Wetlands
Repair and Maintenanc
e
Hydropower RetrofitFish
PassageRemoval Recreation
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13AECOM Environment
Priority Lists for Enhancement Actions
Dam RM1
Dam RM2
Dam RM3
Dam RM4
Dam RM5
Dam RM6
Dam RM7
Dam RM8
Dam RM9
Dam RM10
Repair and Maintenanc
e
Hydropower RetrofitFish
PassageRemoval Recreation
Dam Re1
Dam Re2
Dam Re3
Dam Re4
Dam Re5
Dam Re6
Dam Re7
Dam Re8
Dam Re9
Dam Re10
Dam Pass1
Dam Pass2
Dam Pass3
Dam Pass4
Dam Pass5
Dam Pass6
Dam Pass7
Dam Pass8
Dam Pass9
Dam Pass10
Dam Hyd1
Dam Hyd2
Dam Hyd3
Dam Hyd4
Dam Hyd5
Dam Hyd6
Dam Hyd7
Dam Hyd8
Dam Hyd9
Dam Hyd10
Dam Rec1
Dam Rec2
Dam Rec3
Dam Rec4
Dam Rec5
Dam Rec6
Dam Rec7
Dam Rec8
Dam Rec9
Dam Rec10
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14AECOM Environment
Removal Candidate Characteristics
High Risk
Riverine Fisheries Potential
Impede Fish Passage
Fragment Habitat
Small Impoundments
Minimum Flow Deficiencies
No Flood Control
No Water Supply
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15AECOM Environment
Secondary Outputs
Dam Groups• Low-head, High-hazard
• Condition
• Passage
Data Needs• Collection
• Updates
Stakeholder Identification
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16AECOM Environment
Applications