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Collins Reservoir

Glasgow, Montana — Valley County.

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58Surface acres

Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 146572413).

Location & fast facts

Where Collins Reservoir is in Montana

The red circle marks Collins Reservoir.

Fast facts

About Collins Reservoir

  • County: Valley
  • Nearest city: Glasgow (about 17.6 mi from the lake)
  • Mapped as: Lake or pond (USGS National Hydrography Dataset)
  • Distance: about 165 mi from Billings and 207 mi from Great Falls, straight-line (not driving distance)

Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline (Montana: incorporated places touching the lake, otherwise the nearest one).

Fishing in Montana

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

Lake map

Collins Reservoir shoreline

¼ mileN

No public access sites are listed for this water in the OpenStreetMap boat ramps (no statewide agency ramp layer used) data.

Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 146572413), public domain. State outline: U.S. Census Bureau TIGERweb. Points: OpenStreetMap boat ramps (no statewide agency ramp layer used). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.

Nearest airports

The closest airport with scheduled passenger flights to Collins Reservoir, plus larger airports within about 150 miles:

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Airports with scheduled airline service from OurAirports (large and medium airports); larger airports are FAA large, medium and small hubs by FAA CY2025 enplanements ("major airport" = FAA large hub). Distances are straight-line from the lake's center, not driving distance; road routes are longer.

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 (47.8981, -106.8970). The nearest station may be several miles away. NWS forecast for Collins 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 Collins 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 MT (America/Denver), and accurate to within a few minutes.

    Contact & official info

    Questions about Collins Reservoir

    How big is Collins Reservoir?

    Collins Reservoir covers about 58 acres in Glasgow, Montana (Valley County).

    What towns are on Collins Reservoir?

    Collins Reservoir touches Glasgow in Valley County, Montana.

    Share a tip or fishing report

    Know Collins 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 Montana lakes & ponds · All waters in Glasgow