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LakeQuality
D

Huerfano County Lake Quality

Colorado, 2 lakes, average grade D (Poor)

Only 2 lakes in Huerfano 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, Huerfano County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Horseshoe Reservoir (D) is the cleanest in the county.

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All Lakes in Huerfano County

RankLakeGradeClarityPhosphorus
1Horseshoe ReservoirD3.9 ft-
2Martin LakeD4.8 ft-

See how Huerfano County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 12 states.

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Source: EPA National Aquatic Resource Surveys, 2026.