Lost Island Reservoir
Prairie County, Arkansas258 acresView mapDirections
No nutrient or algae sampling on record from Arkansas DEQ for this lake.
Lost Island Reservoir in Prairie County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Surface area: 258 acres.
Lost Island Reservoir is a 258-acre lake in Prairie County, Arkansas.
Source: EPA Water Quality Portal sampling records, ADEQ. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lost Island Reservoir is safe to swim in today is a call for the Arkansas Division of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lost Island Reservoir
These are the measurements Arkansas DEQ publishes for Lost Island 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 Lost Island Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
258 acres
Shoreline
2.6 mi
No bathymetric survey has been published for Lost Island Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near Lost Island Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Lost Island Reservoir in Prairie County, Arkansas — 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 Lost Island Reservoir
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Arkansas’s top lakes →
Follow Lost Island Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lost Island Reservoir
Nearby Lakes in Prairie County
Frequently asked questions about Lost Island Reservoir
Where is Lost Island Reservoir?
- Lost Island Reservoir is a lake in Prairie County, Arkansas. Its water-quality measurements are published by Arkansas DEQ and shown on this page as reported.
What is the water quality of Lost Island Reservoir?
- Lost Island Reservoir in Prairie County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Surface area: 258 acres.
Is Lost Island Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lost Island Reservoir across LakeQuality
More lakes in Arkansas
Other Lakes in Arkansas
Where this data comes from
Measurements for Lost Island Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.