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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water
D

Adams County Lake Quality

Iowa, 2 lakes, average grade D (Nutrient-rich)

Adams County holds 2 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. Every one of those lakes carries an A–F grade, so the county-level summary covers the full set rather than a monitored subset. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 1 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 Binder Lake (D); the most-stressed is Lake Icaria (F).

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All Lakes in Adams County

2 lakes2 graded lakes

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1DBinder LakeAdamsD3 ft77 µg/L24.5 µg/LNo recent samplesNot recorded
2FLake IcariaAdamsF2.7 ft54 µg/L30.8 µg/LNo recent samples✓ Public

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Source: EPA National Aquatic Resource Surveys, 2026.