Sheridan County Lake Quality
Wyoming, 11 lakes, measured by Wyoming DEQ
Sheridan County has 11 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 5 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Sheridan County carry favourable nutrient and algae readings for Wyoming.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Sibley Lake has the lowest nutrient and algae readings in the county.
Where to stay near Sheridan County
Top-rated places to stay near Sheridan County
Prices for Oct 30–Nov 1, 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 trip to Sheridan County?
Get lake water-quality updates plus the best cabin & lodging deals near Sheridan County — straight to your inbox. No spam, unsubscribe anytime.
Quick Answers for Sheridan County
Planning a trip? Check special fishing regulations for Sibley Lake — or check the official Wyoming fishing regulations.
All Lakes in Sheridan County
11 lakes · 5 ranked on readings, 6 without enough sampling5 lakes ranked on readings · 6 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Sibley LakeSheridan | 9.2 ft | 10 µg/L | No recent samples | No recent samples | ✓ Public |
| 2 | Park ReservoirSheridan | 10.8 ft | 10 µg/L | No recent samples | No recent samples | Not recorded |
| 3 | Mavrakis PondSheridan | 0.9 ft | 50 µg/L | No recent samples | No recent samples | Not recorded |
| 4 | Sawmill Reservoir DSheridan | No recent samples | 20 µg/L | No recent samples | No recent samples | Not recorded |
| 5 | Twin Lakes Reservoir DSheridan | No recent samples | 10 µg/L | No recent samples | No recent samples | Not recorded |
| Kleenburn PondSheridan | 11.5 ft | 15 µg/L | No recent samples | No recent samples | Not recorded | |
| Fivemile ReservoirSheridan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Wagner ReservoirSheridan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Dome Lake ReservoirSheridan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Dome LakeSheridan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Weston ReservoirSheridan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of lakes that fit, with the water quality behind each one.
Other Counties in Wyoming
Browse every Wyoming lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: the Wyoming Department of Environmental Quality. See data sources.