Blockhouse Lake
Price County, Wisconsin241 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Blockhouse Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 8 ft max depth
- Public access
- Limited data
Blockhouse Lake in Price County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 5.7 ft visibility. Maximum depth: 8 ft. Surface area: 241 acres.
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. Methodology: how these readings are compared.
What Blockhouse Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing5 species recorded
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Blockhouse Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Blockhouse 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 Blockhouse Lake
These are the measurements Wisconsin DNR publishes for Blockhouse Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.7 ft. TSI 52.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.7ft | 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. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Blockhouse Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
8 ft
Surface area
241 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
3 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2.9 mi
HydroLAKES / HydroSHEDS
Elevation
1,483 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Blockhouse LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Stays near Blockhouse Lake
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Fish Species
Click a species to see every 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
Designated uses not supporting: Recreation.
Source: EPA ATTAINS assessment unit WI10006060 · Official waterbody report
Nearby Lakes in Price County
Frequently asked questions about Blockhouse Lake
Where is Blockhouse Lake?
- Blockhouse Lake is a lake in Price County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Blockhouse Lake?
- Blockhouse Lake in Price County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 5.7 ft visibility. Maximum depth: 8 ft. Surface area: 241 acres.
Is Blockhouse Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Blockhouse Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
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.
Can I fish at Blockhouse Lake?
- Blockhouse 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 Blockhouse Lake across LakeQuality
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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)
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
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