US lakes & pondsUS lakes & pondsSurface area: The USGS National Hydrography Dataset outline (NHD Permanent ID 81806715).
The red circle marks Johnson Reservoir.
Towns and counties: U.S. Census Bureau boundaries overlaid on the USGS lake outline (Montana: incorporated places touching the lake, otherwise the nearest one).
Official FWP 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.
Stocked by the state: Rainbow trout, Yellow perch (2018, 2019, 2020, 2026; 9,153 fish in all, fry included)
Source: Montana Fish, Wildlife & Parks, Fish Stocking Records from the FWP Fisheries Information System (releases into Johnson Reservoir since 2015). Look up details in FishMT stocking reports. These are stocking records, not a full fish survey; other species also live here.
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 81806715), 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.
The closest airport with scheduled passenger flights to Johnson 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.
Live from the National Weather Service API for the lake's coordinates (47.3167, -105.0999). The nearest station may be several miles away. NWS forecast for Johnson Reservoir. 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 MT (America/Denver), and accurate to within a few minutes.
Johnson Reservoir covers about 32 acres in Richey, Montana (Dawson County).
Montana FWP fish stocking records lists Rainbow trout and Yellow perch.
Johnson Reservoir touches Richey in Dawson County, Montana.
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Straight-line distance between lake centers. All Montana lakes & ponds · All waters in Richey