Fish Counts

Anadromous fish passing upstream through the Holyoke Fish lift are identified and counted during the spring and early summer migration season.  Continuous counts are collected and can be found here during the anadromous fish passage season, April 1-June 30.  Please note, weekly fish counts are subject to change as quality control checks are completed throughout the season. Also, see historical fish counts from the Fishway.

For updates on fish counts visit US Fish & Wildlife Service.

2025 Upstream Fish Passage Counts

Updated 5/26/2025
Species Weekly Total 5/18-5/24 Year to Date
American Shad 46,597 162,891
Blueback Herring 86 136
Gizzard Shad 13 34
Striped Bass 17 21
Sea Lamprey 809 3,119