fish%passage%improvements%atportland%general%electrics ...apr 16, 2014 ·...
TRANSCRIPT
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
Fish Passage Improvements at Portland General Electrics Clackamas River Hydro Facilities
Future of Our Salmon Conference 2014 April 22, 2014 !Presented by: Tim Shibahara Portland General Electric
PGE Clackamas Hydro Project River Miles 22.3 – 31.7
Clackamas Hydro Project -‐ Downstream Fish Passage Solutions
Estacada
Faraday Powerhouse & Lake
River Mill Dam
Faraday Diversion Dam
North Fork Dam
Timber Park Migrant Facility & Migrant Pipeline
River Mill Surface Collector
NF Ladder Spillway Exclusion Net
NF Floating Surface Collector
FLOW
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
Characteristics: Built: 1911 Max Height: 85 ft Impoundment: 150 acres Generation: 23 MW Capacity: 4,850 CFS Run-‐of-‐river project !Fish Passage Fish Ladder built 1911 Rebuilt in 2006 No downstream fish passage
River Mill Surface Collector -‐ Dam and Fish Passage Characteristics
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
Purpose: Provide downstream passage for juvenile salmon and steelhead !Regulatory context: 97% smolt survival standard for the Clackamas Project !Planning and Design: Prototype & Feasibility Studies: 2001-‐2004 Design Phase: 2010 – 2011 Construction: 2011 – 2012 Operation: Nov. 2012 Cost: Design & Build = $12M
River Mill Surface Collector
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
RMSC Components: Collection channel 3 screen systems Transport Channel Fish Sorting Facilities Exit Pipeline !Flow Design: Unit #5 Turbine 500 CFS flow design 700 CFS at high flow
River Mill Surface Collector -‐ Flow Path
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
PIT antenna and large fish separator
River Mill Surface Collector -‐ Juvenile sampling facility
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
River Mill Surface Collector – PIT tag Evaluation
Reservoir Survival: s = r2R1 r1R2
Fish Guidance Efficiency: g = r1 R1
Injury Rates: Examine recaptured PIT tagged fish
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
Survival Injury Rate
Species rate FGE Minor Major
Chinook 98.6% 98.3% 0.6% 1.1%
Coho 99.0% 99.8% 0.5% 1.0%
Steelhead 95.2% 95.8% 0.0% 0.3%
River Mill Surface Collector – PIT tag Evaluation
Powerhouse Intake
Forebay
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
Fish Collected Estimate of Added Juveniles Estimate of Added Adults
Species Smolts Presmolts Smolts Presmolts Smolts to Adult
Presmolts to Adult
Total Adults
Chinook 43,347 27,432 6,502 4,115 65 21 86
Coho 21,211 2,278 3,101 342 93 5 98
Steelhead 5,407 473 811 71 41 2 43
Assigned 15% turbine mortality to all fish collected Chinook: Smolt – Adult survival = 1.0%; Presmolt – Adult Survival = 0.5% Coho: Smolt – Adult survival = 3.0%; Presmolt – Adult Survival = 1.5% Steelhead: Smolt – Adult survival = 5.0%; Presmolt – Adult survival = 2.5%
River Mill Surface Collector – Fish Passage Numbers
Powerhouse Intake
Forebay
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
➢ First year of operation was relatively smooth though some design issues were raised and required attention.
➢ Facility performance in terms of guidance and fish condition were excellent.
➢ Benefits of fish collection were real. Improved passage should result in increased adult returns of roughly 3-‐6%. !
!
River Mill Surface Collector – Summary
Clackamas Hydro Project -‐ Upstream Fish Passage Solutions
Estacada
Faraday Powerhouse & Lake
River Mill Dam
Faraday Diversion Dam
North Fork Dam
NF Adult Sorting Facility
River Mill Fish Ladder
North Fork Fish Ladder
FLOW
Faraday Diversion Reach
Minimum Flows
Powerhouse Intake
Forebay
New Fish Ladder
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
• 1957-‐1998 managed as an integrated hatchery program
• Wild fish sanctuary established in 1999
PGE Clackamas Hydro Project River Miles 22.3 – 31.7
Clackamas Upstream Fish Passage Solutions – North Fork Adult Sorting Facility
Before…
North Fork Adult Sorting Facility -‐ Historic Fish Counts and Sorting Operations
–10 Year Average: –Wild Chinook = 2,211 –Hatch. Chinook = 2,753 –Winter Steelhead = 1,057 –H. Winter St = 162 –Wild Coho = 1,084 –Total Average = 7,752
Powerhouse Intake
Forebay
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
North Fork Adult Sorting Facility -‐ Design Features
!!FACILITY KEY FEATURES !• Hands/Anesthetic free
Sorting • 1000 Fish Capacity • Gravity Feed Water Source • Temperature Reduction in
North Fork Ladder • 3 Holding Pools !
!
North Fork Adult Sorting Facility – Flow and Fish Path
After…
!!FACILITY KEY FEATURES !• Hands/Anesthetic
free Sorting • 1000 Fish Capacity • Gravity Feed Water
Source • Temperature
Reduction in North Fork Ladder
• 3 holding Pools !!
!
North Fork Adult Sorting Facility -‐ New Sorting Operation
Powerhouse Intake
Forebay
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
North Fork Sorting Facility -‐ By the Numbers
1. One staff required to operate the facility !2. Budgeted cost = 4.1 million, final cost = 5.1 million !3. Sorted 5166 wild fish from 2248 hatchery fish
• 15 different species/origin types !3. Average time to determine species/origin = 2 sec per fish
!4. Six adult lamprey passed upstream !6. Largest day 278 fish (146 HCHS, 41 WCHS, 91 WCO)
!7. Decreased temperatures in the North Fork ladder by 1.5 degrees C.
!!!
Powerhouse Intake
Forebay
Controlled Spillway
Uncontrolled Spillway w/ Flashboards
North Fork Sorting Facility -‐ By the Numbers
Tim Shibahara Portland General Electric (503) 630-‐8234 [email protected]