Mule John Lake
Mule John Lake in Polk County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 38 acres.
- Area
- 38 acres
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Why Mule John Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Mule John Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Mule John Lake is a 38-acre lake in Polk County, Minnesota.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Mule John Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Mule John Lake
Compare lakeside cabins, hotels, and vacation rentals near Mule John Lake in Polk County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Mule John Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 38 acres |
No bathymetric survey has been published for Mule John Lake, so its depth is not documented here.
Recreation & Access
- Mule John LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Mule John Lake
Nearby Lakes in Polk County
Frequently asked questions about Mule John Lake
Where is Mule John Lake?
- Mule John Lake is a lake in Polk County, Minnesota. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Mule John Lake?
- Mule John Lake in Polk County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 38 acres.
Is Mule John Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Mule John Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Mule John Lake?
- Mule John Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mule John Lake.
Explore Mule John Lake across LakeQuality
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Where this data comes from
Measurements for Mule John Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory