Where is Mosquito Flat Reservoir?

Mosquito Flat Reservoir is a lake in Custer County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.

Are there boat ramps on Mosquito Flat Reservoir?

Mosquito Flat Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mosquito Flat Reservoir.

Can I fish at Mosquito Flat Reservoir?

Mosquito Flat Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Idaho's fish and wildlife agency, so check its current regulations before you go.

Are there campgrounds on Mosquito Flat Reservoir?

Mosquito Flat Reservoir has 1 public campground from USGS The National Map within 5 km, including Mosquito Flat Reservoir Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Mosquito Flat Reservoir

Custer County, Idaho49 acresView map Directions

No nutrient or algae sampling on record from Idaho DEQ for this lake.

Area

49 acres

Surface area

Shoreline

1.4 mi

Measured length

See the measurements Directions Where to stay

Mosquito Flat Reservoir in Custer County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 49 acres.

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Mosquito Flat Reservoir is a 49-acre lake in Custer County, Idaho. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, IDEQ. Methodology: how these readings are compared.

What Mosquito Flat Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Camping1 public campground nearby

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Mosquito Flat Reservoir is safe to swim in today is a call for the Idaho Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

Get alerts for Mosquito Flat Reservoir →

Water quality measurements for Mosquito Flat Reservoir

These are the measurements Idaho DEQ publishes for Mosquito Flat Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Mosquito Flat Reservoir

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

49 acres

Shoreline

1.4 mi

No bathymetric survey has been published for Mosquito Flat Reservoir, so its depth is not documented here.

Recreation & Access

Boat Landings

Campgrounds

Mosquito Flat ReservoirSemi-private

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Public campgrounds near Mosquito Flat Reservoir

Mosquito Flat Reservoir Campground0.2 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Stays via Stay22

Stays near Mosquito Flat Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Mosquito Flat Reservoir in Custer County, Idaho — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Mosquito Flat Reservoir

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Follow Mosquito Flat Reservoir’s readings

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Fishing Mosquito Flat Reservoir

→ Mosquito Flat Reservoir fishing regulations (limits, seasons, special rules)

Nearby Lakes in Custer County

Sullivan Lake20.5 miView →Jimmy Smith Lake24.1 miView →Quiet Lake32.9 miView →Little Redfish Lake34 miView →Redfish Lake36.8 miView →Yellow Belly Lake—View →

Frequently asked questions about Mosquito Flat Reservoir

Where is Mosquito Flat Reservoir?: Mosquito Flat Reservoir is a lake in Custer County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Mosquito Flat Reservoir?: Mosquito Flat Reservoir in Custer County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 49 acres.
Is Mosquito Flat Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Mosquito Flat Reservoir?: Mosquito Flat Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mosquito Flat Reservoir.
Can I fish at Mosquito Flat Reservoir?: Mosquito Flat Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Idaho's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Mosquito Flat Reservoir?: Mosquito Flat Reservoir has 1 public campground from USGS The National Map within 5 km, including Mosquito Flat Reservoir Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.