4-28-15 dam management program - fish passage
DESCRIPTION
Dam Management Program - Fish PassageTRANSCRIPT
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Environmental Business Council of New England
Energy Environment Economy
EBC Dam Management Program
Up and Over, Around and Through:
Dam Management’s Role in FishPassage & Stream Restoration
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Chad Cox, P.E.
Chair, EBC Dam Management Committee
Civil Engineer / Principal
GZA GeoEnvironmental, Inc.
Environmental Business Council of New England
Energy Environment Economy
Welcome
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Chad Sumner
Program Chair & Moderator
Principal
SumCo Eco-Contracting
Environmental Business Council of New England
Energy Environment Economy
Introduction
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Beth Lambert
Aquatic Habitat Restoration
Program Manager
Division of Ecological Restoration
Environmental Business Council of New England
Energy Environment Economy
Technical, Social, and Other
Challenges that May PreventDam Removal
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Technical, Social, and Other Factors
That Prevent Dam Removal
(or, why some restoration projects
come to a screeching halt)
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DER’s Aquatic Habitat Restoration Group
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Outline
• DER prefers damremoval for river
restoration
• But that isn’t alwayspossible.
• Top 4 reasons why
high priority damsaren’t removed
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Ecological Reasons for
Dam Removal
Dams• Damage ecosystem
processes that build habitat
• Cause lower DO; highertemp
• Block movement of fish and
wildlife
• Drown floodplains
• Removing the dam
eliminates these problems
immediately
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Dams do more than block fish
• Low dissolved oxygen
• Drowned floodplain• Aquatic invasive plants Warm water spillover
Fish and wildlife can’tmigrate upstream
This sediment should be
heading downstream to
build up salt marshes
Non-native species
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Societal Reasons for Dam Removal
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3000 dams and 20,000 culverts(Only) 40 Dams Have Been Removed in MA
3000 dams in MA
43 are flood control dams 44 licensed hydropower dams
164 water supply dams
Worcester County has highest density in USA
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Reason #4: Dam has an Active UseDrinking water supply
Pumping Station Dam,
Greenfield, 2011
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Kendall Company
No. 1 Dam, Colrain
Reason #4: Dam has an Active UseIndustrial water supply
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Reason #3: Upstream Infrastructure
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Dam / Bridge
Utility line
Over-steepened,
eroding banks
More Mill Street Dam infrastructure challenges
(Utility line issues are common to many projects)
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Ipswich Mills Dam, Ipswich
Reason #3: Upstream Infrastructure
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Contaminated Sediment
Baker Chocolate Dam
T&H Dam
Map by Neponset River Watershed Association
Reason #2: Expense of Managing
Contaminated Sediment
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Baker Dam, Neponset River, Milton/Boston
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Tileston & Hollingsworth Dam, Neponset River
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Expense of Managing Contaminated Sediment
Columbia Mill Dam, Housatonic River, Lee
Reason #2: Expense of Managing
Contaminated Sediment
Th #1 f i d
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Watertown Dam, Charles River
The #1 reason for not removing a dam:
Public Sentiment, Attachment, and Fear
Th #1 f t i d
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Public SentimentThe #1 reason for not removing a dam:
Public Sentiment, Attachment, and Fear
Fyfeshire Dam, Bolton
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Solutions
4. Dam has an active use money
3. Upstream infrastructure money
2. Contaminated sediment money1. Public sentiment / fear local advocacy
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“…I caught my first wild
brook trout in the spot
where the dam oncestood. I believe you can
say the project was a
success…”
- Jameson Bastarache
Beth Lambert
Aquatic Habitat
Restoration Program
Manager
617-626-1526
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Nils Wiberg, P.E., CFM
Associate
Fuss & O’Neill
Environmental Business Council of New England
Energy Environment Economy
Up & Over: Rock Ramps –
Kenyon Mills Dam Rock Ramp
Fishway
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Presentation to theEnvironmental Business Council
of New EnglandApril 28, 2015
Design and Construction ofKenyon Mill Dam Nature-Like
Rock Ramp Fishway
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Presentation Overview
• Project Background• Site Constraints
• Fish Passage Design Alternatives
– Full Dam Removal vs. Rock Ramp
• Construction Phase
• Test Flows and Completion
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Pawcatuck River Fish Passage Restoration Projects
Lower Shannock FallsDam Removal (2010)
Horseshoe Falls DamFish Ladder (2012)
Kenyon Mill Dam Nature-Like Rock Ramp (2013)
Potter Hill Dam Fish Ladder
White Rock DamRemoval (2015)
Bradford Dam FishLadder (2016)
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Historic Kenyon Mill Dam
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Kenyon Mill Dam - 1939
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Existing Spillway (2009)
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Dam Deficiencies
– Partial Breach at End of Spillway on
River-Left
– Spillway Section in Need of Repair
– No Low-level Discharge Outlet
– POOR Condition Structure – Would
Need Major Repair or Reconstruction
if Fish Ladder or Bypass ChannelSelected
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Source: August 2007
Malone and MacBroom Feasibility Study
2007 Feasibility Study Alternatives Evaluation
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Dam
PumpHouse
Fire Suppression System Pump Intake Structure
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Fire Suppression System Pump Intake Structure
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Fish Passage Design Alternatives
• Rock Ramp Construction
– Replaces Dam Spillway with a Rock Ramp (approx. 160-feet long)
– Minimal Water Level Change or Effect on Upstream WetlandResources
– Continued Use of River by Kenyon Industries’ Fire SuppressionSystem
– Portage Path Planned for Recreational Boaters
• Full Dam Removal
– Spillway Removed, Potential Modifications to River Channel toOptimize Fish Passage
– Water Level Lowered to Pre-Dam Levels, Some Effect onUpstream Wetland Resources
– River No Longer Used for Kenyon Industries’ Fire SuppressionSystem – WOULD REQUIRE 200k GAL. REPLACEMENT WATERSTORAGE TANK/INFRASTRUCTURE (> $500K)
i l d
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Extensive Upstream Wetland Resources
Kenyon Dam
Worden Pond
Great Swamp
Alt ti E l ti C it i
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Alternatives Evaluation Criteria
• Kenyon Industries Fire Suppression System and Local Fire Water
Supply
• Potential Effects on Wetland Resource Alterations,
Rare/Endangered Species and Habitat, Historic Resources
• Potential Effects on Shallow Groundwater Wells
• Potential Sediment Migration (transitional)
• Potential Bridge and River Channel Scour/Instability
• Potential Effects on Recreational Users (boaters, hunters)
• Potential Flood Impacts/Benefits
• Construction Costs / Post-Construction Maintenance Costs
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Base Flow Water Surface Elevation Modeling
E i ti W t S f P fil
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Existing Water Surface Profile
Amtrak Overpass
Kenyon Dam
Route 2 Bridge
Biscuit City Rd
Bridge
Worden Pond Outlet
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Rock Ramp Water Surface Profile
Amtrak Overpass
Kenyon Dam
Route 2 Bridge
Biscuit City Rd
Bridge
Worden Pond Outlet
F ll D R l W t S f P fil
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Full Dam Removal Water Surface Profile
Amtrak Overpass
Kenyon Dam
Route 2 Bridge
Biscuit City Rd
Bridge
Worden Pond Outlet
P t ti l Sh ll G d t W ll I t
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Potential Shallow Groundwater Well Impacts
Alt ti E l ti
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• Rock Ramp vs. Dam Removal
– Dam Removal is Best Option from Fish PassageStandpoint; Rock Ramp is Less than Optimal
– Alternatively, Dam Removal results in:
• Lowered Upriver Water Surface Profile (Well Impacts)
• Reduced Upriver Riverbank Widths
• Increased Potential Effects on Wetland Hydrology (Dependent onSoil Properties and Magnitude of Profile Change)
• Increased Potential Effects on Rare Species
• Increased Potential of Sediment Mobility and Riverbank Scour
– Dam Removal potentially Cost Prohibitive
– Other Considerations (Easements, etc.)
Alternatives Evaluation
Selected Design Approach Rock Ramp
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Selected Design Approach - Rock Ramp
• Eliminating River as Supply for Kenyon’s Fire
Suppression System deemed Cost Prohibitive; RockRamp Alternative Selected
• Rock Ramp Design Highlights
‒ Overall Layout (4% Avg. Longitudinal Slope)
– Primary Grade Control Weir
– Downgradient Fish Passage Weirs
– Riverbank Stabilization
– Minimal WSE Change, Wetland Impacts, and Sediment Migration
– Minimum WSE of El. 85.42 must be maintained upstream ofRamp during 7Q10 Conditions; Two Dry Hydrants Installed
R k R G li d P fil
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Rock Ramp Generalized Profile
Grade Control Structure With6’ Wide Low-Level Notch
Inv. El.=84.48
Raised Arched WeirsSpaced Every 20’ (Typ.)
Rock Ramp – El. 84.48 To El. 80.32 (-3%-5% Longitudinal Slope)
Tailout – El. 80.32 To El. 77.5(20% Longitudinal Slope)
Geotextile or Bentonite WaterproofingSheet/Membrane
TailwaterElevation
S l t d Alt ti R k R
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Selected Alternative - Rock Ramp
S l t d Alt ti R k R
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Selected Alternative - Rock Ramp
Selected Alternative Rock Ramp
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Selected Alternative - Rock Ramp
Construction Phase Temporary Bypass Channel
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Construction Phase – Temporary Bypass Channel
Construction Phase Temporary Bypass Channel
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Construction Phase – Temporary Bypass Channel
Construction Phase Temporary Bypass Channel
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Construction Phase – Temporary Bypass Channel
Construction Phase Weir Construction
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Construction Phase – Weir Construction
Construction Phase Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Weir Construction
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Construction Phase – Weir Construction
Construction Phase – Test Flows
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Construction Phase Test Flows
Construction Phase – Test Flows
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Construction Phase Test Flows
Construction Phase – Test Flows
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Construction Phase Test Flows
Construction Phase – Weir Construction
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Construction Phase Weir Construction
Construction Phase – Weir Construction
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Construction Phase Weir Construction
Construction Phase – Site Restoration
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Construction Phase Site Restoration
Construction Phase – Site Restoration
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Construction Phase Site Restoration
Completed Kenyon Mill Rock Ramp
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Completed Kenyon Mill Rock Ramp
Completed Kenyon Mill Rock Ramp
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Completed Kenyon Mill Rock Ramp
Completed Kenyon Mill Rock Ramp
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Co p e ed e yo oc a p
U & O D il L dd & E l
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Chad Cox, P.E.
Civil Engineer / Principal
GZA GeoEnvironmental, Inc.
Environmental Business Council of New England
Energy Environment Economy
Up & Over: Denil Ladders & Eel
Ramps – Upper Mystic Lake
Dam
EBC Fish Passage Forum 2015
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Moving Fish and Eels overUpper Mystic Lake Dam
Fish Ladders and Eel Ramps
Chad W. Cox, P.E.
Civil Engineer / Principal
GZA GeoEnvironmental, Inc.Norwood, MA
Presentation Outline
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1. Dam and Site Setting
2. Fisheries Issues
3. Pre-Project Fisheries Management
4. Fish Passage Alternatives
5. Design
6. Construction
7. Completed Structures
8. O&M
9. System Performance
1. Dam & Site Setting
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Upper Mystic Lake Dam
1. Dam & Site Setting
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Upper Mystic Lake Dam
1. Dam & Site Setting
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Upper Mystic Lake Dam
2. Species of Concern
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American eel Anguilla rostrata
Duane Raver/USFWS
American Shad Alosa sapidissima
Alewife Alosa pseudoharengus
Blueback Herring Alosa aestivalis
Cornell University Cornell University
NOAA
3. Pre-Project Fisheries Management
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BUCKET BRIGADE!
4. Fish Passage Alternatives
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• Fish Ladder• Denil
• Alaska steeppass
• Pool and Weir
• Fish Elevator
• Nature-Like Bypass Channel• Eel Ramp
• Temporary
• Permanent
Upstream Passage
Downstream Passage
• Chute
• Weir and Plunge Pool
4a. Upstream Passage Alternatives
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DENIL FISH LADDER
Diagram of a denil fishway.
Source: The Connecticut River Watershed Council, Inc.
4a. Upstream Passage Alternatives
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ALASK STEEPPASS
FISH LADDER
4a. Upstream Passage Alternatives
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POOL AND WEIR FISH LADDER
Diagram of a pool-and-weir fishway.
Source: The Connecticut River Watershed Council, Inc.
4a. Upstream Passage Alternatives
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Fish Elevator Nature-Like Bypass Channel
Northeast Utilities
4a. Upstream Passage Alternatives
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PERMANENT EEL LADDER
4a. Upstream Passage Alternatives
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TEMPORARY EEL LADDER
4a. Upstream Passage Alternatives
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TEMPORARY EEL LADDER
4b. Downstream Passage Alternatives
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CHUTE
WEIR ANDPLUNGE POOL
5. Design
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6. Construction
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6. Construction
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6. Construction
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6. Construction
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7a. Completed Fish Ladder
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7a. Completed Fish Ladder
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7b. Completed Eel Ramp
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7b. Completed Eel Ramp
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7b. Completed Eel Ramp
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7c. Completed Downstream Passage
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7c. Completed Downstream Passage
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7c. Completed Downstream Passage
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8. Operation and Maintenance
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9. System Performance
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Source: Mystic River Watershed Association
9. System Performance
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Source: Mystic River Watershed Association
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9. System Performance
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M i Fi h d E l
EBC Fish Passage Forum 2015
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Moving Fish and Eels over
Upper Mystic Lake DamFish Ladders and Eel Ramps
Chad W. Cox, P.E.
Civil Engineer / Principal
GZA GeoEnvironmental, Inc.
Norwood, MA
Up & Over: Denil Ladders & Eel
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Chris Haker, P.E.
Principal Engineer
Tighe & Bond
Environmental Business Council of New England
Energy Environment Economy
Up & Over: Denil Ladders & Eel
Ramps – Stony Brook Fish
Passage
EBC Dam Management Program Series
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Tighe&Bond
Stony Brook Fish Passage
Improvements Lower Mill Pond Dam
Rehabilitation
April 28, 2015
Christopher D. Haker, P.E.
Principal Engineer
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Background
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Tighe&Bond
■ Stony Brook watershed provides 386 acres of
herring spawning habitat
■ Five fresh water ponds, salt marsh, wetlands
■ Over 900 acres of protected open space
Lay of the Land
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Tighe&Bond
Site Background
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Tighe&Bond
■ Historic herring run in Brewster, MA
■ Known as the “Disney World” of herring runs
■ Historic grist mill and museum – Stony Brook-Factory Village Historic District
– National and State Registers of Historic Places
Stony Brook Improvements
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Tighe&Bond
■ Replace culvert at Route 6A crossing
■ Repair dam and improve herring run channel
■ General brook cleanup
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Lay of the Land
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Tighe&Bond
Dam Deficiencies
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Tighe&Bond
■ Upstream stone masonry wall and outlet gate
deteriorated and leaking
■ Insufficient freeboard during spillway design flood
Dam Deficiencies
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Tighe&Bond
■ Seepage at left (west) abutment■ Trees and brush on dam and abutments
Fish Passage Issues
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Tighe&Bond
■ Some weirs required modification to meetrecommended flow depth, velocity, and slope criteria
Fish Passage Issues
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Tighe&Bond
■ Fish orifice acted as confined opening (herringprefer swimming through notch with free surface)
Dam Rehabilitation
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Tighe&Bond
Dam Rehabilitation
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Tighe&Bond
Dam Rehabilitation
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Tighe&Bond
Dam Rehabilitation
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Tighe&Bond
Dam Rehabilitation
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Tighe&Bond
Dam Rehabilitation
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Tighe&Bond
Fish Passage Improvements
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Tighe&Bond
Fish Passage Improvements
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Tighe&Bond
Fish Passage Improvements
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Tighe&Bond
Fish Passage Improvements
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Tighe&Bond
Fish Passage Improvements
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Tighe&Bond
Results
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Tighe&Bond
■ The 2013 and 2014 runs were largest in 20+ years■ Estimated herring counts since 2007:
– 2007: 22,300
– 2008: 25,300
– 2009: 11,100
Culvert replaced – 2010: 48,100
– 2011: 37,100
– 2012: 41,000
Dam and fish ladder
improvements – 2013: 153,300
– 2014: 271,400
Results
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Tighe&Bond
Results
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Tighe&Bond
Results
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Tighe&Bond
■ The restoration of the Stony Brook watershedreceived the President’s U.S. Coastal America
Partnership Award in 2012
Results
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Tighe&Bond
http://youtu.be/4h2V-VAPc-o
Acknowledgements
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Tighe&Bond
Many thanks to:
Town of Brewster
Chris Miller, Director, Natural Resources Department
Charles Sumner, Town Administrator
Dana Condit, Alewife Committee/Dam Caretaker
Association to Preserve Cape Cod
Jo Ann Muramoto, Mass Bays Program Regional
Coordinator, Cape Cod
Division of Marine Fisheries
Brad Chase, Senior Marine Fisheries Biologist
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Tighe&Bond
Questions?
Around: Fish Bypass Channels –
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Bjorn Lake, Ph.D., P.E.
Engineering Team Leader
Kleinschmidt
Environmental Business Council of New England
Energy Environment Economy
yp
Howland Dam Bypass Channel
Around: Fish Bypass Channels –
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George P. Aponte Clark
Deputy Director
Penobscot River Restoration Trust
Environmental Business Council of New England
Energy Environment Economy
yp
Howland Dam Bypass Channel
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EBC – DAM MANAGEMENT PROGRAM
PLIMOUTH PLANTATIONAPRIL 28, 2015
George Aponte Clarke
Deputy Director
Penobscot River Restoration Trust
Bjorn A. Lake, PhD, PE
Engineering Team Leader
Dept. of Ecological Services
PENOBSCOT RIVER RESTORATION PROJECT
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Restoring Sea-runFisheries and
Rebalancing
Hydropower on the
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• Penobscot Basin is the second
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• Penobscot Basin is the second
largest river system in New
England
• One of the largest freshwater
sources to the Gulf of Maine
• Historic fish community hasbeen severely altered
• Penobscot River supports the
largest run of Atlantic salmon in
the U.S.
Over 100 dams located in the
Penobscot Basin
1000s of road crossingsMap Courtesy of Tara Trinko Lake, NOAA
Dams, water pollution and over fishing have virtually
eliminated sea-run fish above Bangor in the Penobscot River
“After this the Great Works dam was built, and in 1834 or 1835 the Veazie
Dam. The latter dam was closed in the winter. When the fish came in the
spring they found an impassable barrier across their way; they gathered in
ltit d b l th d d t i i t t it A t
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American shad 3-5 million Near 1000 1.5 million
Species Historic Current Potential
River herring 14-20 million Below 1,000 ~ 15 million
Atlantic salmon 75 – 100,000 1,300 (10 yr. avg.) 10,000-12,000
multitudes below the dam and strove in vain to surmount it. . . . A great many
shad and alewives lingered about the dam and died there, until the air was
loaded with the stench.” Maine Commissioner of Fisheries, Charles Atkins, 1869
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Atlantic salmon fishing at the Bangor
Salmon Pool in June of 1926.
Bangor Salmon
Pool in April of1912.
Delivery of the presidential
salmon to President Hoover .
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Lower
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Lower
Penobscot RiverDams
Factors contr ibu t ing to
the reduction in DFS
num bers inc lud e the
cumulative impact of
mult ip le dams, a
signi f icant known yet
unaddressed impact.
(Laser ‘09 and NRC ’04)
Partners in the Penobscot River Restoration Project
Penobscot River
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Restoration Trust
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Removed Two Dams
closest to sea – Veazie & Great Works
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Bypass Howland Dam
for inland habitat access
Improved Fish passage
at four other dams
Increased Energyto maintain power generation.
Enhanced Habit Access
1,000 miles of historic habitat
Help Restore
11 species of native sea-run fish
associated traditions, culture, and
economic opportunities
enobscot River Restoration roject
Before and After Habitat Access
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Existing Access for
Sea-Run Fish
Significantly Improved
Access for Sea-Run Fish to
Nearly 1,000 Miles
Restored use of upriver
spawning habitat for
salmon, shad, alewife,
blueback herring, and eels
Mattawa mkeag River
East Branch Penobscot River
Piscataquis River
Pleasan t River
Bangor
Orono Old Town
West Enfield
Howland
Penobscot River
Bucksport
M att awamkeag Riv er
East Branch Penobscot R iver
Piscataquis River
P leasant R iver
Bangor
OronoOld Town
West Enfield
Howland
Penobscot River
Bucksport
M att awamkeag Riv er
East Branch Penobscot River
Piscataquis River
P leasant R iver
Bangor Orono
Old Town
West Enfield
Howland
Penobscot River Bucksport
Diminished use of
upstream spawning
habitat by salmon
and eels
Underused state
of the artupstream fish
passage
Little or no
commercial,
recreational,
or tribal
sustenance
fisheries
Little if any passage of
shad, alewife, blueback
herring, striped bass,
sturgeon, smelt, and
tomcod, impaired passage of eels
Restored use of
upriver spawning
habitat for salmon,
shad, alewife,
blueback herring,
and eels
State of the art
passage for salmon,
alewife, shad,
blueback herring,
and eels
Restored
commercial,
recreational,
and tribal
sustenance
fisheries
Full restoration of
historical habitat and
access for salmon, shad,
alewife, blueback herring,
eel, striped bass, sturgeon,
smelt, and tomcod
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Photo by R.W. Estella
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ATLANTIC SALMON 255RIVER HERRING 187,429
AMERICAN SHAD 805
STRIPED BASS 18SEA LAMPREY 641
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Howland Dam…
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IN-LINE BYPASS CHANNEL ALTERNATIVE
STREAMSIDEPARK
INLINE
BYPASS
CHANNEL
Retain brick building if
desired
POND ELEV.
TO REMAIN AS IS
HOWEVER FLASH-
BOARDS MAY BE
REMOVED
DAM
EXTENSION
REMOVE EXISTING
FISH LADDER
AND HYDRO
FACILITY
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UPLAND BYPASS CHANNEL ALTERNATIVE
UPLAND
BYPASS
CHANNEL
STREAMSIDE
PARK
Retain brick building if
desired
Example of a bypass
channel in Austria
POND ELEV.
TO REMAIN AS IS
HOWEVER FLASH-
BOARDS MAY BE
REMOVED
REMOVE EXISTING
FISH LADDER
AND HYDRO
FACILITY
Nature-like Fish Bypass
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PROJECT GOALS AND OBJECTIVES
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Provide safe, timely, and effective upstream and downstream passageof all species that historically had access at the site
Maintain or enhance in-stream habitat value
Reconnect the Penobscot River and its watershed to the Gulf of Maine
Restore the fishery and cultural heritage of the Penobscot Nation
Provide appropriate opportunities for recreation, public access, andriver-related economic development
Address environmental and permitting considerations by avoiding orminimizing impacts
Achieve the objectives at a reasonable cost
Avoid unnecessary work
Manage permitting challenges
Address difficult construction
Minimize O&M demands
DESIGN TEAM
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•Project Management•Powerhouse Modifications•Bridge
•Soils Management•Geotechnical
•Hydraulics•Channel Design
•Soils Management•Construction Oversight
SITE HISTORY
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1952 1997
EXISTING CONDITIONS
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UPSTREAM FISH PASSAGE
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FISH PASSAGE DESIGN CRITERIA
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Operational Range
250 to 10,600 cfs
April 15th to
December 1st
Velocity should be 6
fps or less
Minimum depth of
1.5 feet Six diadromous
species
DESIGN PROCESS & OBJECTIVES
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1. Balancing fish passage effectiveness withchannel stability and impoundment levels
2. Minimize operation and maintenance3. Minimize construction cost
Design Team Agency Staff
UPSTREAM ATTRACTION FLOW
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BYPASS CHANNEL DESIGN
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BYPASS CHANNEL DESIGN
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250 cfs
1,000 cfs
4,000 cfs
8,000 cfs
FLOW SPLIT
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0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000
F l o w S p l i t P e r c e
n t a g e
P
e r c e n t E x c e e d a n c e i n P i s c a t a q u i s R i v e r
Flow in the Piscataquis River (cfs)
Channel
Spillway
Peak Salmon Immigration
DOWNSTREAM PASSAGE
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CHANNEL CONSTRUCTION
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www.penobscotriver.org
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www.facebook.com/PenobscotRiver
Through: Dam Removal & River
Restoration – Whittenton Dam
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Nick Nelson
Fluvial Geomorphologist
Inter-Fluve, Inc.
Environmental Business Council of New England
Energy Environment Economy
Removal
Whittenton Dam Removal
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Environmental Business Council Dam Management ProgramPlymouth, MA
April 28, 2015
Nick Nelson, Inter-Fluve
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Site Background
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Mill River Dams
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Taunton River:
Wild & Scenic
Mill River
Morey’sBridge Dam
Mill River Restoration
MA Di i i f E l i l R t ti
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• MA Division of Ecological Restoration
• The Nature Conservancy
• American Rivers
• NOAA
• USFWS
• Save the Bay
• Southeast Regional Planning and EconomicDevelopment District
• MA Audubon
• Dam owners – MA Department of Mental Health,Jefferson Development Partners, Reed & Barton
Goals
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• Remove owner liability associated withdilapidated dams
• Improve fish passage
• Improve water quality• Restore hydrologic and sedimentologic flow
conditions
Morey’s Bridge Dam – Replaced in 2013with Eel Ramp and Fish Ladder
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Whittenton – Removed in 2013
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2010
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2013
West Britannia Dam – In Designs forRemoval
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1896
West Britannia Dam
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West Britannia Designs
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Hopewell Mills Dam – Removed in 2012
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Hopewell Mills/State Hospital
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Hopewell Mills/State Hospital
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Hopewell Mills Dam Looking Upstream June, 2012
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Hopewell Mills Dam Looking Upstream May, 2013
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Hopewell Mills Dam Looking West June, 2012
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Hopewell Mills Dam Looking West High Flows, June, 2013
Whittenton Dam
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2005
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2005
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2005
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2005
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2005
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2005
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2005
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2005
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2013
Components of Whittenton Dam Removal
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• Sediment Management• Endangered Species
• Historical Buildings
• Crazy landowners• Channel Construction
• Plantings
Sediment Management
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Hopewell Mills – Sediment Removal and Disposal
Whittenton Impoundment:
Low Flows
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FullImpoundment
Edge
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Stumps
Longitudinal Profile
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Whittenton DamMorey’s Bridge
Endangered Mussels - Relocated
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Historical Buildings/Resources
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Landowners
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Landowners
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Dam Demolition/Channel Construction
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2010
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Channel and Bank Construction
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2013
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2013
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2013
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2014
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2012
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2014
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2013
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2013
Th k Y
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Thank You
Nick Nelson
Inter-Fluve, Inc.617-714-5537
www.interfluve.com
Networking Break
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Environmental Business Council of New England
Energy Environment Economy
Panel Discussion
Moderator: Chad Sumner, SumCo Eco-Contracting
Speakers
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Environmental Business Council of New England
Energy Environment Economy
Speakers• Beth Lambert, MA Div. of Ecological Restoration
• Nils Wiberg, Fuss & O’Neill
• Chad Cox, GZA GeoEnvironmental, Inc.
• Chris Haker , Tighe & Bond
• Bjorn Lake, Kleinschmidt
• George P. Aponte Clarke, Penobscot River Restoration Trust
• Nick Nelson, Inter-Fluve, Inc.
EBC Dam Management Program
Up and Over Around and Through:
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Up and Over, Around and Through:Dam Management’s Role in Fish
Passage & Stream Restoration
Thank you for attending.