US lakes & pondsUS lakes & pondsSurface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 122229897).
The red circle marks Putnam Lake.
Towns and planning regions: U.S. Census Bureau boundaries overlaid on the USGS lake outline.
Official CT DEEP pages. Rules and fees change; check before you go.
No public access sites are listed for this water in the CT DEEP boat launches data.
Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 122229897), public domain. State outline: U.S. Census Bureau TIGERweb. Points: CT DEEP boat launches. Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.
Live from the National Weather Service API for the lake's coordinates (41.0908, -73.6392). The nearest station may be several miles away. NWS forecast for Putnam Lake. No live water-temperature sensor is shown because we haven't found a public one for this lake.
Based on solunar theory, an estimate. Major periods (about 2 hours) center on when the moon is directly overhead or underfoot; minor periods (about 1 hour) center on moonrise and moonset. The 0–100 activity score rises during those periods and gets a boost near sunrise and sunset and around the new and full moon. Weather, water temperature and pressure often matter more. Sun and moon times are calculated in your browser from the lake's coordinates with standard astronomy formulas, shown in ET (America/New_York), and accurate to within a few minutes.
Reported on or near Putnam Lake
USGS Nonindigenous Aquatic Species database
USGS records matched to this water by location (within about 150 m of the outline) or by the place name in the record. A record shows a sighting was reported; it doesn't prove the species is still there. As of Oct 10, 2026.
Straight-line distance between lake centers. All Connecticut lakes & ponds · All waters in Greenwich