
Little River County Lake Quality
Arkansas, 11 lakes, average grade D (Nutrient-rich)
Little River 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. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. On average, Little River County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Lake Millwood (D); the most-stressed is Lake Millwood (D).
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Quick Answers for Little River County
Planning a trip? Check special fishing regulations for Lake Millwood — or check the official Arkansas fishing regulations.
All Lakes in Little River County
11 lakes · 1 graded, 10 not rated1 graded lake · 10 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DLake MillwoodLittle River | D | 1 ft | 90 µg/L | 29.6 µg/L | No recent samples | ✓ Public |
| NRMill LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRFirst LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRPleasant LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBear LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRRoseborough LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRScott LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRDunn LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHamilton LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHurricane Bend LakeLittle River | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRApplewhite Cut-off LakeLittle River | 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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Other Counties in Arkansas
See how Little River 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.