Big Crawling Stone Deep Lake
Big Crawling Stone Deep Lake in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. 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 →
- Clarity
- 17 ft
- Max depth
- 87 ft
- Area
- 1,483 acres
- Trend
- ↓ Declining
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Why Big Crawling Stone Deep 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 Big Crawling Stone Deep 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.
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. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-09-12. Grade methodology: LakeQuality 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 Big Crawling Stone Deep Lake
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 17 ft down. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 17 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Big Crawling Stone Deep Lake
Compare lakeside cabins, hotels, and vacation rentals near Big Crawling Stone Deep Lake in Vilas 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 Big Crawling Stone Deep Lake
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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 a water-quality grade. LakeQuality does not assign an A–F grade on Big Crawling Stone Deep Lake — official chemistry is on file, not a letter, 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
| Characteristic | Value |
|---|---|
| Maximum Depth | 87 ft |
| Surface Area | 1,483 acres |
Recreation & Access
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Big Crawling Stone Deep 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.
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.429 m/yr | 7 |
| Phosphorus | ↓ Declining | +2.3 µg/L/yr | 6 |
Graded lakes near Big Crawling Stone Deep Lake
Big Crawling Stone Deep Lake has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Big Crawling Stone Deep Lake?
- Big Crawling Stone Deep Lake in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 17 ft visibility. Maximum depth: 87 ft. Surface area: 1483 acres.
Is Big Crawling Stone Deep Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Big Crawling Stone Deep 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 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 a water-quality grade. LakeQuality does not assign an A–F grade on Big Crawling Stone Deep Lake — official chemistry is on file, not a letter, 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.
Are there boat ramps on Big Crawling Stone Deep Lake?
- Big Crawling Stone Deep Lake has 1 documented boat landing in the USGS National Boat Ramps inventory.
Explore Big Crawling Stone Deep Lake across LakeQuality
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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)
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
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