Skip to main content
LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Cleanest Lakes in Ulster County, New York

Tillson Lake in Ulster County leads the rankings on measured clarity and nutrients. Below are the top 25 cleanest monitored lakes in Ulster County, New York, ranked on EPA nutrient and algae measurements.

Ranked List

#LakeCountyClarityPhosphorusAlgae
1Tillson LakeUlster---
2Lake MaratanzaUlster---
3Ulster Heights LakeUlster---
4Cape PondUlster---
5Lake AwostingUlster---
6Lake MinnewaskaUlster---
7Honk LakeUlster---
8Lyon LakeUlster---
9Lyonsville PondUlster---
10Rondout ReservoirUlster---
11Ashokan ReservoirUlster---
12Fourth LakeUlster---
13Third LakeUlster---
14Ashokan ReservoirUlster---
15Kenozia LakeUlster---
16Yankeetown PondUlster---
17Lake KatrineUlster---
18Esopus LakeUlster---
19Sturgeon PoolUlster---
20Mirror LakeUlster---
21Fifth LakeUlster---
22Heddens LakeUlster---
23Chodikee LakeUlster---
24Cooper LakeUlster---
25Alder LakeUlster---

More Answers for Ulster County, New York

All lakes in Ulster County →Cleanest lakes in New York →

Get Ulster County, New York water-quality updates

New readings can change this ranking. Unsubscribe anytime.