Logan County Lake Quality
Arkansas, 8 lakes — no lake here has enough monitoring data for a grade
Logan County has 8 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. No lake in Logan County has enough sampling behind it for an A–F grade yet. The 8 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.
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.
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Quick Answers for Logan County
Planning a trip? Check special fishing regulations for Cove Lake — or check the official Arkansas fishing regulations.
All Lakes in Logan County
8 lakes · 0 graded, 8 not rated0 graded lakes · 8 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| NRCove LakeLogan | NR | 3.5 ft | 43.5 µg/L | 8.5 µg/L | No recent samples | ✓ Public | |
| NRBlue Mountain Lake @ Ashley CreekLogan | NR | 1.5 ft | 89 µg/L | 37.6 µg/L | No recent samples | ✓ Public | |
| NRKeenan LakeLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRWilliams LakeLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake Number TwoLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRCaney LakeLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRParker LakeLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRParis ReservoirLogan | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Arkansas
See how Logan County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.