Design of New Fishway at Sunbury Dam

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American Eel

Striped Bass

Alewife

Hickory Shad

Blueback HerringAmerican Shad (Indicator Species)

Cooperstown New YorkCooperstown New York

Susquehanna Flats, MD, around 1899

4 Dams on the Susquehanna River Below Sunbury, PA

Sunbury, PASunbury, PA

Conowingo DamConowingo Dam

Holtwood DamHoltwood Dam

Safe Harbor DamSafe Harbor Dam

York Haven DamYork Haven Dam

Capture of Returning Adult ShadConowingo Dam Fish Lifts

Origin of Returning Adult ShadConowingo Dam Fish Lifts

Origin of Juvenile Shad - Susquehanna River

Vertical Slot Fishway at York Haven Dam - 2000

2001 Shad Fish Passage2001 Shad Fish Passage

As of May 29, 2001...

Conowingo Dam - 184,000 shad

Holtwood Dam - 94,000 shad

Safe Harbor Dam - 74,000 shad

York Haven Dam - 12,000 shad

Record Breaking Year!Record Breaking Year!

Bridgestone Rubber Dam

Sunbury Dam - Fully Inflated

Sunbury Dam - Fully Deflated

Inflatable Dam at Sunbury (1985-1988): Replaced all 7 dam segments with Bridgestone Rubber Dams Cost = $3,000,000 13.4 mm thick reinforced rubber

BridgestoneBridgestone

FirestoneFirestoneBridgestoneBridgestone FirestoneFirestone

13.4 mm13.4 mm

5 mm5 mm

Bridgestone Rubber Dam

Vertical Slot Fishway

Serpentine Vertical Slot Fishway

Denil Fishway

El. 517.0

El. 511.0

Water Filled Rubber Dams

El. 507.0

Pool & Weir Fishway

Water-Filled Bridgestone DamsWater-Filled Bridgestone Dams

Design Criteria Fish Passage Type - Vertical Slot Rise per Fishway Pool < 9 inches Minimum Design Flow 5,000 cfs (T.W. ~ 419.5+) Headwater/Tailwater Diff. ~ 8.75 Feet Number of Pools 12 Pool Depth ~6 Feet Attraction Flow - Adjustable up to ~300 cfs Downstream Entrance Floor - El. 414.3 Upstream Exit Floor - El. 422.0 Top of Fishway Walls - El. 430.0 Design Must Provide Upstream Access Facility Must Not Impact Upstream Flood Levels Public Viewing (Website) Need New 32’ Supplemental Attraction Flow Gate

Fish Passage Type - Vertical Slot Rise per Fishway Pool < 9 inches Minimum Design Flow 5,000 cfs (T.W. ~ 419.5+) Headwater/Tailwater Diff. ~ 8.75 Feet Number of Pools 12 Pool Depth ~6 Feet Attraction Flow - Adjustable up to ~300 cfs Downstream Entrance Floor - El. 414.3 Upstream Exit Floor - El. 422.0 Top of Fishway Walls - El. 430.0 Design Must Provide Upstream Access Facility Must Not Impact Upstream Flood Levels Public Viewing (Website) Need New 32’ Supplemental Attraction Flow Gate

Early 1800s Construction

Dam Deflated - Low Flow

Alternative AAlternative A

Alternative GAlternative G

Alternative CAlternative C

Pump Station Outlet

Alternative CAlternative C

Alternative D2Alternative D2

Alternative EAlternative E

Alternative KAlternative K

Alternative MAlternative M

New 32-Foot ObermeyerInflatable GateNew 32-Foot ObermeyerInflatable Gate

New 270-FootBridgestoneInflatable Dam

New Control Building

Surveillance & Controls

Design of New Fishway at Sunbury Dam

Design of New Fishway at Sunbury Dam

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