Lake Maria
Lake Maria in Green Lake County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 563 acres.
- Area
- 563 acres
Next lake in Green Lake County
Swipe left or right on this bar to open the next or previous lake.
Why Lake Maria 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 Lake Maria, 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 WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Maria is a 563-acre lake in Green Lake County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Maria water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Maria
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 Lake Maria
Compare lakeside cabins, hotels, and vacation rentals near Lake Maria in Green Lake County, Wisconsin — 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 Lake Maria
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 563 acres |
No bathymetric survey has been published for Lake Maria, so its depth is not documented here.
Recreation & Access
- Lake MariaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Maria
Nearby Lakes in Green Lake County
Frequently asked questions about Lake Maria
Where is Lake Maria?
- Lake Maria is a lake in Green Lake County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Maria?
- Lake Maria in Green Lake County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 563 acres.
Is Lake Maria safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Maria 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 Lake Maria?
- Lake Maria has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Maria.
Explore Lake Maria across LakeQuality
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Green Lake County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
Other Lakes in Wisconsin
Where this data comes from
Measurements for Lake Maria come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory