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Anderson Reservoir

Harlem, Montana — Blaine County.

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19Surface acres

Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 145003482).

Getting there

Flying here

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

Driving here

Pick up a rental car at the airport you fly into and drive to Anderson Reservoir.

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Staying here

Look for hotels in and around Harlem, MT.

Search hotels near Harlem, MT on Klook

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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.

Things to do near Anderson Reservoir

Look up tours, activities and attraction tickets around Harlem, MT on Klook.

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Boat rentals near Anderson Reservoir

Browse boat, pontoon and kayak rentals and charters listed on GetMyBoat.

Boat rentals in Montana on GetMyBoat

Listings, prices and availability are set by GetMyBoat and its hosts. Check the lake's own boating rules before you go.

Location & fast facts

Where Anderson Reservoir is in Montana

The red circle marks Anderson Reservoir.

Fast facts

About Anderson Reservoir

  • County: Blaine
  • Nearest city: Harlem (about 14.5 mi from the lake)
  • Mapped as: Lake or pond (USGS National Hydrography Dataset)
  • Distance: about 121 mi from Great Falls and 172 mi from Billings, 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.

Good for & watch for

Good for

  • Fishing. Rainbow trout, Fathead minnow, Brassy minnow and White sucker

Watch for

    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 fish data (Montana FWP)

    Fish species caught in Montana FWP fish surveys (most-caught first): Fathead minnow, Brassy minnow, White sucker, Lake chub, Rainbow trout, Mountain sucker, Creek chub, Northern redbelly dace, Brook stickleback, Longnose dace.

    Stocked by the state: Rainbow trout (2015–2026, 12 years; 32,939 fish in all, fry included) · Latest survey: FWP fish survey 2025 (records since 2003)

    Source: Montana Fish, Wildlife & Parks, Fish Survey Locations from the FWP Fisheries Information System (surveys of Anderson Reservoir since 1990) and FWP Fish Stocking Records where listed. Look up the water in FishMT. Surveys use nets that catch some species better than others, so this is not a complete fish list.

    Fishing gear for Anderson Reservoir

    Gear picks based on the fish listed for Anderson Reservoir above. These open Amazon search results; check your state's fishing rules for the water before you buy bait or tackle.

    As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure.

    Lake map

    Anderson Reservoir shoreline

    0.1 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 145003482), 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.

    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 (48.2535, -108.9499). The nearest station may be several miles away. NWS forecast for Anderson 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 Anderson 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 Anderson Reservoir

      How big is Anderson Reservoir?

      Anderson Reservoir covers about 19 acres in Harlem, Montana (Blaine County).

      What fish are in Anderson Reservoir?

      Montana FWP fish survey and stocking records lists Rainbow trout, Fathead minnow, Brassy minnow, White sucker, Lake chub, Mountain sucker, Creek chub, Northern redbelly dace, Brook stickleback and Longnose dace.

      What towns are on Anderson Reservoir?

      Anderson Reservoir touches Harlem in Blaine County, Montana.

      Share a tip or fishing report

      Know Anderson 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 Harlem