Big Crawling Stone Deep Lake
Vilas County, Wisconsin1,483 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Big Crawling Stone Deep Lake. Here is what has been measured.
- Rusty Crayfish
- 87 ft max depth
- Limited data
Big Crawling Stone Deep Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 17 ft visibility. Maximum depth: 87 ft. Surface area: 1483 acres.
Wisconsin DNR lists Panfish as common on Big Crawling Stone Deep Lake. DNR survey details →
Big Crawling Stone Deep Lake is a 1,483-acre lake in Vilas County, Wisconsin with a maximum depth of 87 feet. Overall water quality is declining over recent sampling years. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-09-12. Methodology: how these readings are compared.
What Big Crawling Stone Deep Lake is good for
From access and monitoring records, not editorial picks.
- Clear water17 ft of visibility
- Fishing6 species recorded
- Deep water87 ft surveyed max depth
- Big water1,483 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Big Crawling Stone Deep 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 Big Crawling Stone Deep Lake
These are the measurements Wisconsin DNR publishes for Big Crawling Stone Deep 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 17 ft down. TSI 36.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 17ft | 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. | 36 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Big Crawling Stone Deep Lake
Answers come straight from the public measurements and survey records on this page.
Blue-Green Algae (Cyanobacteria)
There’s no recent EPA CyAN cyanobacteria estimate for Big Crawling Stone Deep Lake — clouds, ice, or an off-season gap in coverage. The most recent reading was low (12,246 cells/mL) on June 27, 2026.
Blue-green algae can appear and clear within days, so check your state’s current advisory before swimming. EPA CyAN ↗
Wisconsin DNR lists Panfish as common on Big Crawling Stone Deep Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Big Crawling Stone Deep Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. 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 2004. 2 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
87 ft
Surface area
1,483 acres
Stays via Stay22
Stays near Big Crawling Stone Deep Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Big Crawling Stone Deep Lake
- → Big Crawling Stone Deep Lake fishing: DNR survey catch rates, species & stocking
- → Big Crawling Stone Deep Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Big Crawling Stone Deep Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Big Crawling Stone Deep Lake? (mercury & PFAS guide)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: Worsening
Based on 7 years of monitoring (2020–2026).
Water clarity
Worsening7 years
Phosphorus
Worsening+2.3 µg/L/yr6 years
Nearby Lakes in Vilas County
Frequently asked questions about Big Crawling Stone Deep Lake
Where is Big Crawling Stone Deep Lake?
- Big Crawling Stone Deep Lake is a lake in Vilas County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Big Crawling Stone Deep Lake?
- Big Crawling Stone Deep Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 17 ft visibility. Maximum depth: 87 ft. Surface area: 1483 acres.
Is Big Crawling Stone Deep Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Big Crawling Stone Deep Lake?
- Big Crawling Stone Deep Lake has a maximum depth of 87 feet. The lake covers 1483 acres.
What fish are in Big Crawling Stone Deep Lake?
- Fish species found in Big Crawling Stone Deep Lake include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Big Crawling Stone Deep Lake is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Big Crawling Stone Deep Lake?
- Wisconsin DNR lists Panfish as common on Big Crawling Stone Deep Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Big Crawling Stone Deep Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Does Big Crawling Stone Deep Lake have blue-green algae?
- There is no recent EPA CyAN cyanobacteria estimate for Big Crawling Stone Deep Lake (clouds, ice, or an off-season gap). The most recent reading was low (12,246 cells/mL). Blue-green algae can appear and clear within days, so check Wisconsin's current advisory before swimming.
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Where this data comes from
174 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Lac Du Flambeau Band of Lake Superior Chippewa Indians Water Program (Tribal)
LDFWATER2007174 samples · 2020–2024
Analytical methods
- Turbidity by Nephelometry
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
Fish and recreation data from Wisconsin DNR Lakes