Hickory County Lake Quality
Missouri, 10 lakes, average grade D (Poor)
Only 10 lakes in Hickory 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. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 2 lakes fall into the F bracket outright.
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 Pomme de Terre L. Lake (C); the most-stressed is Pomme de Terre Lake (F).
Quick Answers for Hickory County
Planning a trip? Check special fishing regulations for Pomme de Terre L. Lake — or check the official Missouri fishing regulations.
All Lakes in Hickory County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Pomme de Terre L. Lake | C | 4.8 ft | 25 µg/L |
| 2 | Pomme de Terre L. Central Arm Lake | D | 3 ft | 30.5 µg/L |
| 3 | Pomme de Terre Lake | D | 2.8 ft | 33 µg/L |
| 4 | Pomme de Terre Lake | D | 2.6 ft | 39 µg/L |
| 5 | Pomme de Terre L. Lake | D | 2.1 ft | 26 µg/L |
| 6 | Pomme de Terre Lake | D | 1.3 ft | 67 µg/L |
| 7 | Pomme de Terre Lake | F | 1.2 ft | 89 µg/L |
| 8 | Pomme de Terre Lake | F | 1 ft | 140 µg/L |
Other Counties in Missouri
See how Hickory County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
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Source: EPA National Aquatic Resource Surveys, 2026.