What is the cleanest lake near Hidden Lake?

Su13 Lake in Keweenaw County holds a Grade A water quality score and is 6.4 miles from Hidden Lake.

Why is Hidden Lake not Grade A?

Hidden Lake holds Grade C, with about 2.5 ft of water clarity and 27.5 µg/L of phosphorus. The grade reflects measured water quality against Metropolitan Council thresholds. Cleaner alternatives nearby score higher on clarity, phosphorus, or chlorophyll-a.

Are these recommendations based on real data?

Yes. Every grade is calculated from EPA Water Quality Portal samples for the lake. Recommendations are limited to lakes within 30 miles of Hidden Lake in Wisconsin, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Hidden Lake, Top 5 Within 30 Miles, LakeQuality

Cleaner Lakes Than Hidden Lake

5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

Hidden Lake carries a Grade C (Fair) water quality score. Within 30 miles, 5 lakes hold a higher grade. Su13 Lake (Keweenaw County, Grade A, 6.4 mi away) is the closest meaningful upgrade.

Su13 Lake

Keweenaw County, Wisconsin · 6.4 mi from Hidden Lake

+Two grade letters higher (C → A)
++32.4 ft water clarity

Sargent Lake

Keweenaw County, Wisconsin · 9.8 mi from Hidden Lake

+Two grade letters higher (C → A)
++7.9 ft water clarity
+Lower phosphorus (17.3 vs 27.5 µg/L)

Lake Ahmik

Keweenaw County, Wisconsin · 3.2 mi from Hidden Lake

+Higher grade (C → B)
++4.5 ft water clarity
+Lower phosphorus (17 vs 27.5 µg/L)

Lake Richie

Keweenaw County, Wisconsin · 13.2 mi from Hidden Lake

+Higher grade (C → B)
++5.8 ft water clarity
+Lower phosphorus (17.8 vs 27.5 µg/L)

Beaver Lake

Keweenaw County, Wisconsin · 14.1 mi from Hidden Lake

+Higher grade (C → B)
++5.5 ft water clarity
+Lower phosphorus (17.1 vs 27.5 µg/L)

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.