Moldenhauer Lake
Moldenhauer Lake in Ozaukee County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 12.2 µg/L. Maximum depth: 32 ft. Surface area: 3 acres.
Wisconsin DNR rates Panfish as abundant on Moldenhauer Lake. DNR survey details →
- Max depth
- 32 ft
- Area
- 3 acres
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Why Moldenhauer 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 Moldenhauer Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
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.
Moldenhauer Lake is a 3-acre lake in Ozaukee County, Wisconsin with a maximum depth of 32 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Trout.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-08-13. Grade methodology: LakeQuality 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 Moldenhauer Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 12.2 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 12.2 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Moldenhauer Lake
Compare lakeside cabins, hotels, and vacation rentals near Moldenhauer Lake in Ozaukee 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 Moldenhauer Lake
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Wisconsin DNR rates Panfish as abundant on Moldenhauer Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Moldenhauer Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2024).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 32 ft |
| Surface Area | 3 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Moldenhauer Lake
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Moldenhauer Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Saukville Village Sewer UtilitySaukville · 3.2 mi away · NPDES WI0021555MajorRecent violation
- Schreiber Foods Inc - West BendWest Bend · 4.2 mi away · NPDES WI0026751Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Graded lakes near Moldenhauer Lake
Moldenhauer Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Ozaukee County
Frequently asked questions about Moldenhauer Lake
Where is Moldenhauer Lake?
- Moldenhauer Lake is a lake in Ozaukee County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Moldenhauer Lake?
- Moldenhauer Lake in Ozaukee County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 12.2 µg/L. Maximum depth: 32 ft. Surface area: 3 acres.
Is Moldenhauer Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Moldenhauer 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 Moldenhauer Lake?
- Moldenhauer Lake has a maximum depth of 32 feet. The lake covers 3 acres.
What fish are in Moldenhauer Lake?
- Fish species found in Moldenhauer Lake include Panfish, Largemouth Bass, Trout. Moldenhauer Lake is located in Ozaukee County, Wisconsin.
What did the DNR fisheries survey find at Moldenhauer Lake?
- Wisconsin DNR rates Panfish as abundant on Moldenhauer Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Moldenhauer Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Moldenhauer Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX1 sample · 2024
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes