Second Annual Long Island Natural History Conference



Monitoring Movement and Passage of Fish in the Carmans River
Heidi N. O’Riordan

ABSTRACT:  In March 2012, Region 1 New York State Department of Environmental Conservation Fisheries Unit began monitoring the movement of several species of diadromous fish in the Carmans River within the Southaven County Park. Alewife (Alosa pseudoharengus), American eel (Anguilla rostrata), brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Oncorhynchus mykiss) have been tagged with PIT (Passive Integrated Transponder) tags. Four NYSDEC and three Cornell Cooperative Extension PIT Tag antenna arrays were constructed and installed at various points in the Carmans River. The PIT tagging project will provide information for the following projects: the Fate of Stocked Trout Study, which is a statewide effort to evaluate the current stocking practices; monitoring the naturally reproducing brook trout population in the river; evaluation of the Alaskan steep-pass fish ladder that was installed on Hards Lake dam in 2008; and a side project will test the homing capabilities of the American eel by relocating them into the tidal portion of the river and monitoring their use of the fish ladder. The results of the aforementioned projects will be used to determine future management decisions regarding dam management, fish stocking, and fish management decisions within the Carmans River.

Heidi O’Riordan is a biologist with the NYSDEC.