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Mongaup Falls Reservoir

Forestburgh · Lumberland, New York — Sullivan County.

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106Surface acres
1Public access sites

Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 26148662).

Location & fast facts

Where Mongaup Falls Reservoir is in New York

The red circle marks Mongaup Falls Reservoir.

Fast facts

About Mongaup Falls Reservoir

  • County: Sullivan
  • Shore towns: Forestburgh, Lumberland
  • Mapped as: Lake or pond (USGS National Hydrography Dataset)
  • Distance: about 93 mi from Albany and 125 mi from Syracuse, straight-line (not driving distance)

Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline.

Fishing in New York

Official NYSDEC pages. Rules and fees change; check before you go.

Good for & watch for

Good for

  • Boating. 1 public trailer launch listed (see access)
  • Fishing. Brown trout
  • Camping. 16 campgrounds within 15 mi (list)

Watch for

  • Boat traffic. A public trailer launch means motorboats share the water; expect more traffic on summer weekends.
  • Cold water. Water stays cold well into late spring and turns cold again in fall. Wear a life jacket when paddling in the shoulder seasons.

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.

Official fishing data (NYSDEC)

Stocked by the state: Brown trout (2011–2025, 15 years; 19,205 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 Mongaup Falls Reservoir (Sullivan County). NYSDEC page.

Lake map

Mongaup Falls Reservoir shoreline, boat launches & beaches

Mongaup Falls Reservoir DEC boat launch (Boat launch)1½ mileN

Numbers on the map match the list at rightbelow.

Boat launch
  1. 1Mongaup Falls Reservoir DEC boat launch
    Boat launch · Forestburgh

Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 26148662), 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.

Campgrounds near Mongaup Falls Reservoir

We found 16 campgrounds and RV parks within 15 miles of Mongaup Falls Reservoir, 1 of them within 5 miles. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.

10 more within 15 miles

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.

Conditions right now

Air temperature & conditions (nearest NWS station)Loading…
Fetching the latest National Weather Service observation…

Live from the National Weather Service API for the lake's coordinates (41.5463, -74.7746). The nearest station may be several miles away. NWS forecast for Mongaup Falls Reservoir. No live water-temperature sensor is shown because we haven't found a public one for this lake.

Sun, moon & best fishing times

Sun & moon at Mongaup Falls Reservoir

Best fishing times

Major periodMinor periodDaylight

    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.

    Boat launches & access sites

    1 public access site listed, 1 with a boat ramp or trailer launch.

    SiteTownOwnerTypeParkingFeeUsesMap
    Mongaup Falls Reservoir DEC boat launchForestburghNYSDECTrailer - Improved · Yes ramp10 trailer—Boating41.5539, -74.7805

    NYSDEC boat launch sites (data.ny.gov)

    Fees, hours and rules change; confirm with the site owner before you go.

    Contact & official info

    Questions about Mongaup Falls Reservoir

    How big is Mongaup Falls Reservoir?

    Mongaup Falls Reservoir covers about 106 acres in Forestburgh and Lumberland, New York (Sullivan County).

    What fish are in Mongaup Falls Reservoir?

    NYSDEC fishing and stocking data lists Brown trout.

    Is there a public boat launch on Mongaup Falls Reservoir?

    Yes. 1 public trailer launch is listed: Mongaup Falls Reservoir DEC boat launch. Check posted fees and parking rules.

    Are there campgrounds near Mongaup Falls Reservoir?

    Yes. We list 16 campgrounds and RV parks within 15 miles, 1 of them within 5 miles.

    What towns are on Mongaup Falls Reservoir?

    Mongaup Falls Reservoir touches Forestburgh and Lumberland in Sullivan County, New York.

    Share a tip or fishing report

    Know Mongaup Falls Reservoir? 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).

    Lakes & ponds nearby

    Straight-line distance between lake centers. All New York lakes & ponds · All waters in Forestburgh