Little Crawling Stone Deep Lake
Vilas County, WisconsinLimited DataOligotrophic
Little Crawling Stone Deep Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.
The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. A maximum depth of 44 ft puts Little Crawling Stone Deep Lake in the middle of Wisconsin's depth distribution. At 113 acres, Little Crawling Stone Deep Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Little Crawling Stone Deep Lake sits at rank 96 of 191 in Vilas County, in the lower half of the local distribution.
Little Crawling Stone Deep Lake has at least one documented invasive species (Banded Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. Walleye are documented at Little Crawling Stone Deep Lake, one of 6 fish species on record for the lake. A documented public access point at Little Crawling Stone Deep Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-10-08. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 14 ft. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 44 ft |
| Surface Area | 113 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Little Crawling Stone Deep Lake (14-day solunar calendar)
→ Is it safe to eat fish from Little Crawling Stone Deep Lake? (mercury & PFAS guide)
→ Little Crawling Stone Deep Lake fishing regulations (limits, seasons, special rules)
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: → Stable
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.509 m/yr | 7 |
| Phosphorus | ↑ Improving | -0.93 µg/L/yr | 5 |
Recreation & Access
Location
County Ranking
Ranked #96 of 191 lakes in Vilas County
Cleaner Lakes Within 30 Miles
Little Crawling Stone Deep Lake holds Grade B. 2 nearby lakes hold higher grades.
Nearby Lakes in Vilas County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1998. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2020-10-08
Monitoring stations: 1
Where to stay near Little Crawling Stone Deep Lake
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