Connecticut River Coordinator's Office
Northeast Region
 
Photo of the Holyoke Dam - Photo credit:  U.S. Fish and Wildlife Service
Photo of the Holyoke Dam. Credit: USFWS

The Connecticut River Atlantic Salmon Commission establishes an annual schedule for the operation of up and downstream passage for a number of dams in the Connecticut River basin. These schedules are based on the projected movement of migratory fish and may be adjusted in season to address actual observations.

2008 CT River Schedule of Upstream Fish Passage Operations
Location (Project) Upstream Fish Passage Species Life Stage Date of Operation1 Hours of Operation
Wilder Ladder salmon adult May 15 - Jul 15 24 hrs/day
salmon adult Sep 15 - Nov 15 24 hrs/day
 
Bellows Falls Ladder salmon adult May 15 - Jul 15 24 hrs/day
salmon adult Sep 15 - Nov 15 24 hrs/day
 
Vernon Ladder salmon adult May 15 - Jul 15 24 hrs/day
salmon adult Sep 15 - Nov 15 24 hrs/day
shad & herring adult May 15 - Jul 15 24 hrs/day
 
Turners Falls Cabot Ladder,
Gatehouse
Ladder, and Spillway
Ladder
salmon adult Apr 1 - Jul 15 24 hrs/day
salmon adult Sep 15 - Nov 15 24 hrs/day
shad & herring adult Apr 1 - Jul 15 24 hrs/day
 
Holyoke Zone-of-Passage
Flows2
salmon, shad, herring and sturgeon adult Apr 1 - Jul 153 24 hrs/day
 
Tailrace Lift and Spillway
Lift
salmon, shad & herring adult Apr 1 - Jul 15 up to 12 hrs/day4
Tailrace and Spillway
Eelways
eels adults Apr 15 - Nov 155 24 hrs/day

1. Actual dates of operation are based on passage of fish at the next lowest downstream fishway and/or monitoring of radio-tagged adult salmon locations.

2. Zone -of-passage flow of 1,300 cfs or more to the bypass reach below the dam

3. Zone-of-passage flows for shortnose sturgeon passage in summer (July 16 through September 14) are not currently required until downstream passage measures are in place to protect down-running sturgeon.

4. Actual hours of operation on a day-to-day basis are to be determined by the Massachusetts Division of Fisheries and Wildlife in consultation with the project owner.

5. Actual eelpass installation dates are dependent on river flow conditions.

 



2008 CT River Schedule of Downstream Fish Passage Operations
Location (Project) Downstream Fish Passage Exit Species Life Stage Date of Operation1 Hours of Operation
McIndoes Log Sluice3 salmon smolt Apr 1 - Jun 15 24 hrs/day
 
Ryegate (Dodge Falls) Fish Bypass Facility salmon smolt Apr 1 - Jun 15 24 hrs/day
 
Wilder Log Sluice2 salmon smolt Apr 1 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
 
Bellows Falls Angled Fish Guide Wall and Log Sluice2 salmon smolt Apr 1 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
 
Vernon Fish Bypass at Unit 10 salmon smolt Apr 1 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
shad adult Jun 1 - Jul 31 24 hrs/day
shad juvenile Sep 1 - Nov 15 24 hrs/day
 
Louvers and Fish Pipe at Unit 4 eels adults Sep 1 - Nov 15 24 hrs/day
salmon smolt Apr 1 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
shad adult Jun 1 - Jul 31 24 hrs/day
shad juvenile Sep 1 - Nov 15 24 hrs/day
    eels adults Sep 1 - Nov 15 24 hrs/day
 
Northfield Barrier Net salmon smolt Apr 1 - Jun 151 24 hrs/day
 
Turners Falls Log Sluice and Trash Sluice salmon smolt Apr 7 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
shad adult Jun 1 - Jul 31 24 hrs/day
shad juvenile Sep 1 - Nov 15 24 hrs/day
    eels adults Sep 1 - Nov 15 24 hrs/day
 
Holyoke6 Canal Louver Bypass salmon smolt Apr 7 - Jun 15 24 hrs/day
salmon adult Oct 1 - Dec 315 24 hrs/day
shad adult Jun 15 - Jul 31 24 hrs/day
shad juvenile Sep 1 - Nov 15 24 hrs/day
  eels adults Aug 1 - Aug 31 24 hrs/day
  sturgeon adults Apr 7 - Nov 15 24 hrs/day
 
Bascule Gate4 eels adults Sep 1 - Nov 15 24 hrs/day
salmon smolt Apr 7 - Jun 15 24 hrs/day
salmon adult Oct 15 - Dec 315 24 hrs/day
shad adult Jun 1 - Jul 31 24 hrs/day
shad juvenile Sep 1 - Nov 15 24 hrs/day
  eels adults Sep 1 - Nov 15 24 hrs/day

1. Date of initiating operation April 1 or as soon as possible after high spring flows subside. Net can be removed after smolt emigration ceases at the Cabot sampler upon consultation with the Coordinator.

2. Minimum log sluice gate opening of 3.5 feet at Bellows Falls and 5 feet at Wilder.

3. The McIndoes log sluice gate is now capable of tracking headpond level and can operate continuously.

4. Bascule gate may be closed periodically in order to facilitate upstream passage at spillway fishlift, as directed by Massachusetts Division of Fisheries and Wildlife fishway personnel.

5. Downstream passage operation, or monitoring with operation as needed, is required for salmon when salmon are upstream of a location.

6. Holyoke passage operation dates may be adjusted to facilitate fish passage facility improvements if approved by the Massachusetts Division of Fisheries and Wildlife and U.S. Fish and Wildlife Service.

 

 
Last updated: September 13, 2010
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