Henrietta Lake
Henrietta Lake in Waukesha County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 7 ft. Surface area: 15 acres.
Wisconsin DNR lists Panfish as common on Henrietta Lake. DNR survey details →
- Max depth
- 7 ft
- Area
- 15 acres
- Public access
- Yes
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Why Henrietta 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 Henrietta 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.
Henrietta Lake is a 15-acre lake in Waukesha County, Wisconsin with a maximum depth of 7 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-03-01. Grade methodology: LakeQuality methodology.
Watch Henrietta Lake water quality
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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 Henrietta Lake
These readings exist but are not enough 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 Henrietta Lake
Compare lakeside cabins, hotels, and vacation rentals near Henrietta Lake in Waukesha 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 Henrietta Lake
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Wisconsin DNR lists Panfish as common on Henrietta 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 Henrietta 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. Monitored by volunteers since 2024. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 7 ft |
| Surface Area | 15 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Henrietta 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.
Reservoir Info (USACE NID)
Henrietta Lake is a man-made reservoir impounded by the Waterville (completed 1962), built primarily for recreation on the SCUPPERNONG CREEK; gravity-type dam, 16 ft tall and 300 ft long.
- Surface area
- 68 ac
- Normal storage
- 270 ac-ft
- Max storage
- 350 ac-ft
- Drainage area
- 8.4 sq mi
- Hazard class
- Low
- Owner
- Mikulecky, Harvey
Source: USACE National Inventory of Dams, NID ID WI00223 · Operator website · Matched by proximity (0.59 km)
Graded lakes near Henrietta Lake
Henrietta Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Waukesha County
Frequently asked questions about Henrietta Lake
Where is Henrietta Lake?
- Henrietta Lake is a lake in Waukesha 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 Henrietta Lake?
- Henrietta Lake in Waukesha County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 7 ft. Surface area: 15 acres.
Is Henrietta Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Henrietta 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 Henrietta Lake?
- Henrietta Lake has a maximum depth of 7 feet. The lake covers 15 acres.
What fish are in Henrietta Lake?
- Fish species found in Henrietta Lake include Panfish, Largemouth Bass, Northern Pike. Henrietta Lake is located in Waukesha County, Wisconsin.
What did the DNR fisheries survey find at Henrietta Lake?
- Wisconsin DNR lists Panfish as common on Henrietta 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 Henrietta Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
2 measurements 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_WQX2 samples · 2024
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
Fish and recreation data from Wisconsin DNR Lakes