Central New England FWCO
Northeast Region
 
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Anadromous Fish Returns - Merrimack River

Essex Dam | Pawtucket Dam | Amoskeag Dam | Historic Data

Merrimack River
Essex Dam, Lawrence, Massachusetts
Counts as of July 15, 2016

Species

Total Returns to Date

Atlantic Salmon

6

American Shad

67,528

River Herrings

417,240

Striped Bass

1,603

Sea Lamprey

5,164

American Eel

351

Gizzard Shad

112

*River herring refers collectively to two fish species: blueback herring and alewife

 

Merrimack River
Pawtucket Dam, Lowell, Massachusetts
Counts as of July 6, 2016

Species

Total Returns to Date

Atlantic Salmon

5

American Shad

5,485

River Herrings *

142,087

Striped Bass

0

Sea Lamprey

227

American Eel

in process

*River herring refers collectively to two fish species: blueback herring and alewife

 

Merrimack River
Amoskeag Dam, Manchester, New Hampshire
No fish passage counts to date

Species

Total Returns to Date

Atlantic Salmon

na

American Shad

na

River Herrings *

na

Striped Bass

na

Sea Lamprey

na

Gizzard Shad

na

*River herring refers collectively to two fish species: blueback herring and alewife

 

Historic Data
Anadromous Fish Returns
Merrimack River

Year

River Herring *

American Shad

Atlantic Salmon

1991

379,588

16,098

332

1992

102,166

20,796

199

1993

14,027

8,599

61

1994

88,913

4,349

21

1995

33,425

13,861

34

1996

51

11,322

76

1997

403

22,661

71

1998

1,362

27,891

123

1999

7,898

56,461

185

2000

19,405

72,800

82

2001

1,550

76,717

83

2002

526

54,586

56

2003

10,866

55,620

147

2004

15,051

36,593

129

2005

99

6,382

34

2006

1,257

1,205

91

2007

1,169

15,876

74

2008

108

25,116

119

2009

1,456

23,199

81

2010

518

10,442

85

2011

740

13,835

402

2012

8,992

21,396

137

2013

17,359

37,149

22

2014

57,213

38,107

75

2015

128,692

89,467

13

TOTAL

2,003,839

845,780

3,836

All counts were taken at the Essex Dam Fish Lift in Lawrence, Massachusetts
*River Herring refers collectively to two fish species: blueback herring and alewife

 

For further information about anadromous fish returns to the Merrimack River, please contact us.

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Last updated: May 23, 2016
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