Department of Environmental Conservation

D E C banner

Tomhannock Reservoir

Physical Features:

Elevation: 391 feet
Area: 1,720 acres
Shoreline Length: 19 miles
Length: 5.2 miles
Max Depth: 50 feet
Mean Depth: 23 feet
County & Town: Rensselaer County, Town of Pittstown

Aquatic Plant Life:

Rooted aquatic vegetation limited to shoreline and the small side on the southeast end of lake.


Numerous pulloffs and shoreline access points on Reservoir Road. Must obtain access permit from the City of Troy (leaves DEC website). Daylight hours only.

Fish Species:

Man holding a carp from the Tomhannok

Chain Pickerel, Common Carp, Golden Shiner, Emerald Shiner, Spottail Shiner, Bluntnose Minnow, Fallfish, White Sucker, Yellow Bullhead, Brown Bullhead, White Perch, Rock Bass, Pumpkinseed, Bluegill, Smallmouth Bass, Largemouth Bass, Black Crappie, Tessellated Darter, Yellow Perch, Walleye


The reservoir is most known for its abundant walleye population. The panfish population is very abundant and grows to above average sizes. Smallmouth bass can be caught in good numbers. Very popular year-round fishery with some impressive catches being reported.

Ice Fishing:

Permitted January 1 - March 15, daylight hours only. No shanties, power augers, propane etc. Battery operated augers are permitted.


Special Fishing Regulations Apply.

  • Important Links
  • Links Leaving DEC's Website
  • PDF Help
  • For help with PDFs on this page, please call 607-652-7366.
  • Contact for this Page
    65561 State Highway 10
    Suite 1
    Stamford, NY 12167-9503
    Send us an email
  • This Page Covers
  • Page applies to Region 4