Curtis Lake
Curtis Lake in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 41 ft. Surface area: 35 acres.
- Max depth
- 41 ft
- Area
- 35 acres
- Public access
- Yes
Next lake in Waushara County
Why Curtis Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Curtis Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
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.
Curtis Lake is a 35-acre lake in Waushara County, Wisconsin with a maximum depth of 41 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-05-07. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Curtis Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Curtis Lake
Compare lakeside cabins, hotels, and vacation rentals near Curtis Lake in Waushara 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 41 ft |
| Surface Area | 35 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Curtis Lake County ParkPublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Curtis Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Graded lakes near Curtis Lake
Curtis Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Waushara County
Frequently asked questions about Curtis Lake
What is the water quality grade for Curtis Lake?
- Curtis Lake in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 41 ft. Surface area: 35 acres.
Is Curtis Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Curtis Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Curtis Lake?
- Curtis Lake has a maximum depth of 41 feet. The lake covers 35 acres.
What fish are in Curtis Lake?
- Fish species found in Curtis Lake include Panfish, Largemouth Bass, Northern Pike. Curtis Lake is located in Waushara County, Wisconsin.
Are there boat ramps on Curtis Lake?
- Curtis Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Curtis Lake County Park. Public access is listed as yes.
Explore Curtis Lake across LakeGrade
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Where this data comes from
2 measurements from 1 monitoring station, 2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX2 samples · 2026
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory