Projects and Research

In our efforts to protect the Susquehanna River and Delaware River basins and their species, we facilitate fish passages which allow upstream passage to several species that inhabit these areas. Check out our fish passages to learn more! 

There are four hydroelectric dams on the lower Susquehanna River that provide upstream fish passage. The fish passage facilities are owned and operated by the hydroelectric companies:

Conowingo Dam (Constellation Energy Corporation)Holtwood Dam (Brookfield Renewable U.S.)Safe Harbor Dam (Brookfield Renewable U.S.)York Haven Dam (York Haven Power Company)

The fish passage facilities are...

American eel are collected in eel ladders at Conowingo Dam and in Octoraro Creek and transported upstream of the mainstem dams and released in the Susquehanna River. This program started in 2008. Annual eel collection occurs from late spring until early fall.

2024 American Eel Collections^Week StartingConowingo DamOctoraro Dam28 - Apr  Season Totals00

^2024 collection...