Blockhouse Lake
Blockhouse Lake in Price County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.7 ft visibility. Maximum depth: 8 ft. Surface area: 241 acres.
- Clarity
- 5.7 ft
- Max depth
- 8 ft
- Area
- 241 acres
- Public access
- Yes
Next lake in Price County
Why Blockhouse 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 Blockhouse Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus 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.
Blockhouse Lake is a 241-acre lake in Price County, Wisconsin with a maximum depth of 8 feet. The lake supports 5 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 2026-07-01. 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 Blockhouse Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.7 ft. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.7 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Blockhouse Lake
Compare lakeside cabins, hotels, and vacation rentals near Blockhouse Lake in Price 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 | 8 ft |
| Surface Area | 241 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Blockhouse LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Blockhouse 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.
EPA Impairment Status
Blockhouse Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10006060 · Official waterbody report
Graded lakes near Blockhouse Lake
Blockhouse Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Price County
Frequently asked questions about Blockhouse Lake
What is the water quality grade for Blockhouse Lake?
- Blockhouse Lake in Price County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.7 ft visibility. Maximum depth: 8 ft. Surface area: 241 acres.
Is Blockhouse Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Blockhouse 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 Blockhouse Lake?
- Blockhouse Lake has a maximum depth of 8 feet. The lake covers 241 acres.
What fish are in Blockhouse Lake?
- Fish species found in Blockhouse Lake include Musky, Panfish, Largemouth Bass, Northern Pike, Walleye. Blockhouse Lake is located in Price County, Wisconsin.
Are there boat ramps on Blockhouse Lake?
- Blockhouse Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Blockhouse Lake. Public access is listed as yes.
Explore Blockhouse 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
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
Impairment status from EPA ATTAINS 303(d) database
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