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Orleans County Lake Quality

Vermont, 30 lakes, average grade A (Excellent)

There are 30 graded lakes in Orleans County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. On average, Orleans County lakes grade an A. That puts it near the top of the {{stateName}} county ranking.

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. Caspian Lake (A) is the cleanest in the county.

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All Lakes in Orleans County

RankLakeGradeClarityPhosphorus
1Caspian LakeA29.5 ft7.8 µg/L
2Seymour LakeA24.6 ft7.8 µg/L
3Long PondA-15.6 µg/L
4Echo LakeA23 ft8 µg/L
5Lake WilloughbyA28.2 ft7.8 µg/L
6Crystal LakeA19.4 ft5.4 µg/L
7Shadow LakeA28.9 ft8.4 µg/L
8Lake ElligoA26.2 ft6.8 µg/L
9Little Hosmer PondA-9.2 µg/L
10Beaver Pond OutletA-7.1 µg/L
11Jobs PondA-7.8 µg/L
12Horse PondA-10.7 µg/L
13Daniels PondA-13.6 µg/L
14Great Hosmer PondA20.3 ft20.3 µg/L
15Lake SalemA13.1 ft14.8 µg/L
16Round PondA16.7 ft8.6 µg/L
17Lake ParkerA13.1 ft15.5 µg/L
18Tildys PondA-21.1 µg/L
19Baker PondA-23.3 µg/L
20Lake DerbyA-9.6 µg/L
21Lake MemphremagogB10.5 ft14.1 µg/L
22Long PondB14.2 ft19.3 µg/L
23Holland PondB7.9 ft10.6 µg/L
24Bald Hill PondB13.1 ft10.6 µg/L
25Pensioner PondB9.7 ft14.3 µg/L
26Clyde PondB9.4 ft14.7 µg/L
27Beaver PondB7.9 ft9.3 µg/L
28South Bay LakeC4.4 ft22.7 µg/L
29Brownington PondC8.5 ft-
30Walker PondC-51.4 µg/L

See how Orleans County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.

Where to stay near Orleans County

Top-rated places to stay near Orleans County

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Source: EPA National Aquatic Resource Surveys, 2026.