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Trap Count Statistics

Introduction

Division of Sea-Run Fisheries and Habitat staff conduct routine monitoring of the abundance and status of adult Atlantic salmon and other fish species in many Maine rivers. Staff operate traps at fishways and barrier weirs to monitor fish returns to the Penobscot (Veazie Dam), Narraguagus (Cherryfield Dam), and Dennys rivers (Dennysville weir); Great Lakes Hydro, America operates a trap at Weldon Dam in the upper Penobscot drainage, Pennsylvania Power and Light operates a trap at the Ellsworth Dam on the Union River; Florida Power and Light operates traps and lifts at two hydroelectric projects on the Saco River, Maine DMR operates one on the Androscoggin River, and the St. Croix Waterway Commission operates a trap at the Milltown Dam on the St. Croix River.

These fish counting facilities are typically operated from May through early November each year. Staff update the statewide trap catch summary weekly or more often during the peak of the fish migrations. The statewide trap catch table includes counts of sea-run salmon captured on Maine rivers and salmon removed from the river as broodstock for restocking of Maine rivers and DOES NOT include captures of aquaculture strays or captive reared adult salmon released from Federal hatcheries.

Trap Counts for Fish Returns to Maine by River
River Trap Location
At.Salmon(MSW)
At.Salmon(grilse)
River Herring
Am.Shad
Striped Bass
Sea Lamprey
Trap Opened
Trap Closed
Updated
Comments
Androscoggin Brunswick
3
0
59,960
0
0
12
May 16
August 26, 2014

One of the MSW Brunswick returns was recaptured at Lockwood and the counts were adjusted.

Aroostook Tinker Dam
1
NC
NC
NC
NC
July 9, 2014
September 15, 2014

Counts provided by Algonquin Power.

Kennebec Lockwood Dam
16
2
113,000
1
13
8
?
August 28, 2014

Counts provided by Brookfield Renewable Energy Group.

Narraguagus Cherryfield
2
0
NC
81
0
70
April 27, 2014
September 15, 2014

River herring and small bodied(<40 sm) American shad are able to escape the Narraguagus trap.

Penobscot Milford fish lift
175
79
187,429
805
18
641
May 5, 2014
August 28, 2014

Blackman Stream, 187,003 river herring

Penobscot Orono
2
3
2,075
0
0
0
?
August 28, 2014

Counts provided by Brookfield Renewable Energy Group.

Penobscot Weldon Dam
2
2
NC
NC
NC
NC
August 4, 2014

Counts provided by Brookfield Renewable Energy Group.

Pleasant Pleasant
1
2
NC
NC
NC
NC
~ May 5, 2014
September 15, 2014
Saco Cataract
0
0
11,063
3,096
2
May 29, 2014
August 18, 2014

Counts provided by Brookfield Renewable Energy Group.

Saco Skelton
3
0
3,410
33
0
0
June 1, 2014
August 18, 2014

Counts provided by Brookfield Renewable Energy Group.

Sebasticook Benton Falls
0
0
2,378,906
27
11
2
May 7, 2014
September 15, 2014
St. Croix Milltown Dam
0
0
27,036
0
0
1
May 5, 2014
June 27, 2014

Counts provided by Atlantic Salmon Federation

Union Ellsworth
1
0
150,660
0
0
0
May 5, 2014
July 28, 2014

Counts provided by Brookfield Renewable Energy Group.

 

Provisional data
NC = not counted
MSW = multi sea winter (≥ 63 cm fork length)
grilse = one sea winter (< 63 cm fork length)
River herring counts = escapement only