US lakes & pondsUS lakes & pondsSurface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 131860529).
The red circle marks Millsite Lake.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline.
Official NYSDEC pages. Rules and fees change; check before you go.
Built only from the data on this page: official access lists, OpenStreetMap beaches and trails, campground listings, state and USGS invasive-species records. We don't rate crowds or water quality.
Fish species listed by NYSDEC for this recommended fishing water: Lake trout, Landlocked salmon, Largemouth bass, Sunfish, Yellow perch, Northern pike.
Stocked by the state: Landlocked salmon, Rainbow trout (2011–2025, 15 years; 25,081 fish in all, fry included)
Source: New York State Department of Environmental Conservation: Recommended Fishing Lakes and Ponds and Fish Stocking Lists (2011 on) on data.ny.gov, records for Millsite Lake (Jefferson County). NYSDEC page.
Numbers on the map match the list at rightbelow.
Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 131860529), public domain. State outline: U.S. Census Bureau TIGERweb. Points: NYSDEC boat launch sites (data.ny.gov). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.
We found 3 campgrounds and RV parks within 15 miles of Millsite Lake. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.
RVs welcome · Tent sites
All campgrounds & RV parks in New York
Green tent icons on the lake map mark campgrounds near the shore, and the interactive map shows the closest 12. Amenities are listed only where a source records them; call or check the campground's website before you go, since seasons and rates change every year.
Campground data: OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.
Live from the National Weather Service API for the lake's coordinates (44.2908, -75.7797). The nearest station may be several miles away. NWS forecast for Millsite 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.
1 public access site listed, 1 with a boat ramp or trailer launch.
| Site | Town | Owner | Type | Parking | Fee | Uses | Map |
|---|---|---|---|---|---|---|---|
| Millsite Lake DEC boat launch | Theresa | NYSDEC | Trailer - Unimproved · Yes ramp | 15 trailer | — | Boating Restrooms | 44.2939, -75.7855 |
NYSDEC boat launch sites (data.ny.gov)
Fees, hours and rules change; confirm with the site owner before you go.
Reported on or near Millsite 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.
Millsite Lake covers about 487 acres in Theresa, New York (Jefferson County).
NYSDEC fishing and stocking data lists Northern pike, Largemouth bass, Lake trout, Landlocked salmon, Yellow perch and Sunfish.
Yes. 1 public trailer launch is listed: Millsite Lake DEC boat launch. Check posted fees and parking rules.
Yes. We list 3 campgrounds and RV parks within 15 miles.
Millsite Lake touches Theresa in Jefferson County, New York.
Know Millsite Lake? Tell us about the launch, parking, where they're biting or anything a first-time visitor should know. Tips go privately to the LakeRipple editor; nothing is posted automatically. Helpful tips may be featured on this page (we'll use your first name only if you give one).
Straight-line distance between lake centers. All New York lakes & ponds · All waters in Theresa