Murray County Lake Quality
Oklahoma, 1 lakes, average grade D (Poor)
Only 1 lakes in Murray County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. On average, Murray 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 Nla Lake (D); the most-stressed is Nla Lake (D).
Quick Answers for Murray County
Planning a trip? Check special fishing regulations for Nla Lake — or check the official Oklahoma fishing regulations.
All Lakes in Murray County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Nla Lake | D | 2.8 ft | 28000 µg/L |
Other Counties in Oklahoma
See how Murray 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 Murray County
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Source: EPA National Aquatic Resource Surveys, 2026.