Hewitt Lake
Iron County, Wisconsin79 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Hewitt Lake. Here is what has been measured.
- 88 ft max depth
- Public access
- Limited data
Hewitt Lake in Iron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 16.5 ft visibility. Maximum depth: 88 ft. Surface area: 79 acres.
Wisconsin DNR lists Musky as common on Hewitt Lake. DNR survey details →
Hewitt Lake is a 79-acre lake in Iron County, Wisconsin with a maximum depth of 88 feet. The lake supports 3 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-07-23. Methodology: how these readings are compared.
What Hewitt Lake is good for
From access and monitoring records, not editorial picks.
- Clear water16.5 ft of visibility
- Boat launch1 documented ramp
- Fishing3 species recorded
- Deep water88 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Hewitt Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hewitt Lake
These are the measurements Wisconsin DNR publishes for Hewitt Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 16.5 ft down. TSI 37.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 16.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 37 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Hewitt Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Musky as common on Hewitt Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Hewitt Lake’s water-quality measurements separately. 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
Max depth
88 ft
Surface area
79 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.9 mi
HydroLAKES / HydroSHEDS
Elevation
1,660 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Hewitt LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Hewitt Lake
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Follow Hewitt Lake’s readings
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Fish Species
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Fishing Hewitt Lake
Nearby Lakes in Iron County
Frequently asked questions about Hewitt Lake
Where is Hewitt Lake?
- Hewitt Lake is a lake in Iron County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Hewitt Lake?
- Hewitt Lake in Iron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 16.5 ft visibility. Maximum depth: 88 ft. Surface area: 79 acres.
Is Hewitt Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Hewitt Lake?
- Hewitt Lake has a maximum depth of 88 feet. The lake covers 79 acres.
What fish are in Hewitt Lake?
- Fish species found in Hewitt Lake include Musky, Panfish, Largemouth Bass. Hewitt Lake is located in Iron County, Wisconsin.
What did the DNR fisheries survey find at Hewitt Lake?
- Wisconsin DNR lists Musky as common on Hewitt Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Hewitt Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Hewitt Lake?
- Hewitt Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Hewitt Lake. Public access is listed as yes.
Can I fish at Hewitt Lake?
- Hewitt Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Hewitt Lake across LakeQuality
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from 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