1
ANla Lake
Sublette County, Wyoming · 19.5 mi from Nla Lake
- +Two grade letters higher (C → A)
- ++14.8 ft water clarity
- +Lower phosphorus (7.7 vs 15507.4 µg/L)
Cleaner Lakes Than Nla Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Nla Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Nla Lake (Sublette County, Grade A, 19.5 mi away) is the closest meaningful upgrade.
Reviewed by LakeQuality Editorial Team · Updated
2
AFremont Lake
Sublette County, Wyoming · 20.7 mi from Nla Lake
- +Two grade letters higher (C → A)
- ++32.3 ft water clarity
- +Lower phosphorus (10 vs 15507.4 µg/L)
3
AWorthen Meadows Reservoir
Fremont County, Wyoming · 28.3 mi from Nla Lake
- +Two grade letters higher (C → A)
- ++5.4 ft water clarity
- +Lower phosphorus (10 vs 15507.4 µg/L)
4
BNla Lake
Fremont County, Wyoming · 17.5 mi from Nla Lake
- +Higher grade (C → B)
- ++9.1 ft water clarity
- +Lower phosphorus (14000 vs 15507.4 µg/L)
5
BNla Lake
Sublette County, Wyoming · 22.6 mi from Nla Lake
- +Higher grade (C → B)
- ++24.9 ft water clarity
- +Lower phosphorus (12000 vs 15507.4 µg/L)
Reading the cohort
Within 30 miles of Nla Lake, 5 water bodies score higher than its Grade C on the same EPA water-quality metrics. That density of cleaner options is itself a signal — when several nearby lakes score better on the same indicators, the issues at Nla Lake are typically lake-specific (depth, watershed inflow, stratification pattern) rather than regional. The choice for a swim, paddle, or fishing trip is genuinely between meaningfully different water bodies, not between marginal differences in the same dataset.
The nearest cleaner alternative — Nla Lake in Sublette County — sits 19.5 miles from Nla Lake, putting it firmly in "destination trip" rather than "neighborhood swap" range. The water-quality gap has to be the deciding factor; for a casual outing, Nla Lake is the practical choice and the cleaner options are reserved for purpose-specific visits.
The EPA water-quality grading combines clarity (Secchi depth), phosphorus, and chlorophyll-a measurements from state environmental sampling. A higher letter grade reflects measurably cleaner water on those indicators, not subjective beauty or access quality — a Grade A lake might have worse boat-launch facilities or shoreline access than a Grade C neighbor, so the ranking is one input alongside the rest of trip planning. See the methodology page for the full grading formula.
How this list is built
Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.