Little River County Lake Quality
Arkansas, 2 lakes, average grade F (Very Poor)
Little River County has 2 graded 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. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.
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 (F); the most-stressed is Nla Lake (F).
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
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Millwood | F | 1 ft | 90 µg/L |
| 2 | Nla Lake | F | 1.2 ft | 246 µg/L |
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 34 states.
Where to stay near Little River County
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Source: EPA National Aquatic Resource Surveys, 2026.