What is the cleanest lake near Swede Lake?

Waconia Lake in Carver County holds a Grade C water quality score and is null miles from Swede Lake.

Why is Swede Lake not Grade A?

Swede Lake holds Grade F, with about 2 ft of water clarity and 134 µg/L of phosphorus. The letter is nutrients and algae against that lake’s EPA ecoregion classes. Clarity is shown separately. Cleaner alternatives nearby have a strictly higher nutrient-and-algae score.

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 Swede Lake in Minnesota, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Swede Lake, Top 3 Within 30 Miles

Cleaner Lakes Than Swede Lake

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

Swede Lake carries a Grade F (Algae-prone) water quality score. Within 30 miles, 3 lakes hold a higher grade. Waconia Lake (Carver County, Grade C, null mi away) is the closest meaningful upgrade.

Waconia Lake

Carver County, Minnesota · mi from Swede Lake

+Two grade letters higher (F → C)
++5.3 ft water clarity
+Lower phosphorus (30 vs 134 µg/L)

Little Long Lake

Hennepin County, Minnesota · mi from Swede Lake

+Two grade letters higher (F → C)
++16.7 ft water clarity
+Lower phosphorus (27.5 vs 134 µg/L)

Whaletail Lake

Hennepin County, Minnesota · mi from Swede Lake

+Higher grade (F → D)
++1.3 ft water clarity
+Lower phosphorus (45.8 vs 134 µg/L)

Reading the cohort

Only 3 lakes within a 30-mile radius score better than Swede Lake's Grade F. The narrow set of options reflects either a fairly clean lake to begin with or a region without a wide range of cleaner alternatives — the trip-planning decision is more constrained than the headline "cleaner lakes nearby" suggests.

The closest cleaner alternative — Waconia Lake in Carver County, Grade C — sits miles from Swede Lake. At that distance, the substitution cost is essentially zero: same drive time, same regional access, demonstrably cleaner water on the EPA indicators. For repeat visitors who care about clarity or phosphorus levels, swapping the routine to Waconia Lake is mostly a habit change rather than a logistics change.

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

Rated lakes on LakeQuality have a letter from EPA Water Quality Portal samples — nutrients and algae measured against EPA National Lakes Assessment ecoregion classes. Secchi is shown, not scored. 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.