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American Falls Reservoir

American Falls, Idaho — Bannock County.

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55,320Surface acres
4Public access sites

Surface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 56466309, 2 mapped parts).

Location & fast facts

Where American Falls Reservoir is in Idaho

The red circle marks American Falls Reservoir.

Fast facts

About American Falls Reservoir

  • Counties: Bannock, Power, Bingham
  • City or town on the shore: American Falls
  • Mapped as: Lake or pond (USGS National Hydrography Dataset)
  • Distance: about 53 mi from Idaho Falls and 91 mi from Twin Falls, straight-line (not driving distance)

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

Fishing in Idaho

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

Good for & watch for

Good for

  • Boating. 4 public trailer launches listed (see access)
  • Swimming. 2 public beach or swim spots on the map (details)
  • Camping. 8 campgrounds within 15 mi, 1 on the shore (list)

Watch for

  • Boat traffic. A public trailer launch means motorboats share the water; expect more traffic on summer weekends.
  • No lifeguard listed. None of our sources lists a staffed lifeguard. Swim at your own risk and watch children closely.

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.

Lake map

American Falls Reservoir shoreline, boat launches & beaches

Willow Bay Resort (campground)Boat ramp (Boat launch)1Boat ramp (Boat launch)2Boat ramp (Boat launch)3Boat ramp (Boat launch)4Bronco Beach (Beach)5Rainbow Beach (Beach)61 mileN

Numbers on the map match the list at rightbelow.

Boat launchBeach Campground
  1. 1Boat ramp
    Boat launch
  2. 2Boat ramp
    Boat launch
  3. 3Boat ramp
    Boat launch
  4. 4Boat ramp
    Boat launch
  5. 5Bronco Beach
    Beach
  6. 6Rainbow Beach
    Beach

Shoreline: USGS National Hydrography Dataset (NHD Waterbody, Permanent ID 56466309, plus 1 more mapped parts), public domain. State outline: U.S. Census Bureau TIGERweb. Points: OpenStreetMap boat ramps (no statewide agency ramp layer used) and OpenStreetMap boat ramps (ODbL). Interactive map: Leaflet with © OpenStreetMap contributors. Not for navigation.

Campgrounds near American Falls Reservoir

We found 8 campgrounds and RV parks within 15 miles of American Falls Reservoir, 3 of them within 5 miles. 1 is right on the shore. Distances are straight-line from the nearest point on the shoreline, so driving distance is longer.

2 more within 15 miles

All campgrounds & RV parks in Idaho

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: Recreation.gov (RIDB) · OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026.

Nearest airports

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

Compare car rentals near this lake

Car rental links go to our partner Discover Cars; LakeRipple may earn a commission at no extra cost to you. Affiliate disclosure.

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 (42.9198, -112.7418). The nearest station may be several miles away. NWS forecast for American 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 American 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 MT (America/Boise), and accurate to within a few minutes.

    Boat launches & access sites

    4 public access sites listed, 4 with a boat ramp or trailer launch.

    SiteTownOwnerTypeParkingFeeUsesMap
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating42.8233, -112.8100
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating42.7805, -112.8807
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating42.9500, -112.7737
    Boat ramp——Boat ramp (OpenStreetMap) · Yes ramp——Boating42.8071, -112.8353

    OpenStreetMap boat ramps (no statewide agency ramp layer used) and OpenStreetMap boat ramps (ODbL)

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

    Public beaches

    On OpenStreetMap: 2 beaches and swimming spots on the shore of American Falls Reservoir not marked private, residents-only or members-only.

    BeachTypeAccessDirections
    Bronco BeachBeachAccess not tagged; check posted rulesGet directions
    Rainbow BeachBeachAccess not tagged; check posted rulesGet directions

    Beaches: © OpenStreetMap contributors (ODbL), within about 150 m (500 ft) of the lake outline. A mapped beach is not a guarantee that swimming is allowed, supervised or safe; some town beaches need a resident sticker even when the map doesn't say so. Check posted rules and water-quality advisories before you swim.

    Contact & official info

    Questions about American Falls Reservoir

    How big is American Falls Reservoir?

    American Falls Reservoir covers about 55,320 acres in American Falls, Idaho (Bannock County).

    Is there a public boat launch on American Falls Reservoir?

    Yes. 4 public trailer launches are listed: Boat ramp, Boat ramp and Boat ramp. Check posted fees and parking rules.

    Can you swim in American Falls Reservoir?

    OpenStreetMap shows 2 public beach or swimming spots on the shore. None of our sources lists a lifeguard, so swim at your own risk and follow posted rules.

    Are there campgrounds near American Falls Reservoir?

    Yes. We list 8 campgrounds and RV parks within 15 miles, 3 of them within 5 miles.

    What towns are on American Falls Reservoir?

    American Falls Reservoir touches American Falls in Bannock County, Power County and Bingham County, Idaho.

    Share a tip or fishing report

    Know American 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 Idaho lakes & ponds · All waters in American Falls