Fuller Lake
Fuller Lake in Oneida County, Wisconsin has a water quality grade of C (Fair). Water clarity: 4.3 ft visibility. Phosphorus: 25.1 µg/L.
- Clarity
- 4.3 ft
- Max depth
- ~19 ft est.
- Type
- Eutrophic
- Trend
- ↑ Improving
- Public access
- Yes
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Fuller Lake is a productive, nutrient-rich eutrophic lake in Oneida County, Wisconsin with an estimated average depth of about 19 feet. Water quality is graded C based on 1 sampling years through 2026. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 66 other monitored lakes in Oneida County, Fuller Lake ranks #51 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-05-15. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyModerate
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
Murky, only visible to about 4.3 ft. Phosphorus level: 25.1 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | Not graded |
| Phosphorus | 25.1 µg/L | Fair |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Fuller Lake
Compare lakeside cabins, hotels, and vacation rentals near Fuller Lake in Oneida 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 Fuller Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~19 ft est. |
| Average Depth | ~13 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wisconsin has not published bathymetry for Fuller Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Squaw LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Fuller Lake
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.014 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.82 µg/L/yr | 6 |
County Ranking
Ranked #51 of 67 lakes in Oneida County
Nearby Lakes With Higher Grades
Fuller Lake holds Grade C. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Oneida County
Frequently asked questions about Fuller Lake
Where is Fuller Lake?
- Fuller Lake is a lake in Oneida County, Wisconsin. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Fuller Lake?
- Fuller Lake in Oneida County, Wisconsin has a water quality grade of C (Fair). Water clarity: 4.3 ft visibility. Phosphorus: 25.1 µg/L.
Is Fuller Lake safe to swim in?
- Generally safe for swimming, moderate water quality. Fuller Lake has a water quality grade of C (Fair). Always check local health department advisories before swimming.
How deep is Fuller Lake?
- No published bathymetric survey covers Fuller Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 19 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Fuller Lake?
- Fuller Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Squaw Lake. Public access is listed as yes.
Explore Fuller Lake across LakeQuality
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Where this data comes from
46 measurements from 2 monitoring stations, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX46 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (2)
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)
Named boat-access points from the USGS National Boat Ramps inventory