Mosslake_deep
Mosslake_deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 23 µg/L. Maximum depth: 29 ft. Surface area: 185 acres.
Wisconsin DNR lists Panfish as common on Mosslake_deep. DNR survey details →
- Typical in July
- 71°F
- Max depth
- 29 ft
- Area
- 185 acres
- Trend
- ↑ Improving
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Why Mosslake_deep 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 Mosslake_deep, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity 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.
Mosslake_deep is a 185-acre lake in Vilas County, Wisconsin with a maximum depth of 29 feet. Overall water quality is improving 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 2022-07-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedBacteria A
Based on E. coli testing, Mosslake_deep never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 8 samples across 2 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Wisconsin’s current beach and health-department advisories before swimming.
Water quality measurements for Mosslake_deep
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus level: 23 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 23 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Mosslake_deep
Compare lakeside cabins, hotels, and vacation rentals near Mosslake_deep 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 Mosslake_deep
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Mosslake_deep typically sits around 71°F at the surface in July. Summer average is about 66°F. Usually warmest in Jul (about 71°F) and coldest in Jun (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 21 field readings (2024–2024) via the EPA Water Quality Portal. See the full Mosslake_deep water temperature breakdown →
Wisconsin DNR lists Panfish as common on Mosslake_deep.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Mosslake_deep — official chemistry is on file, not a letter, and the water-quality trend over 5 years of monitoring is improving. 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. 1 station on file (most recent sample 2020).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 29 ft |
| Surface Area | 185 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Mosslake_deep
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: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -2.85 µg/L/yr | 4 |
Graded lakes near Mosslake_deep
Mosslake_deep has no grade, but these lakes within a short drive do.
Nearby Lakes in Vilas County
Frequently asked questions about Mosslake_deep
Where is Mosslake_deep?
- Mosslake_deep 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 Mosslake_deep?
- Mosslake_deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 23 µg/L. Maximum depth: 29 ft. Surface area: 185 acres.
Is Mosslake_deep safe to swim in?
- Based on E. coli testing, Mosslake_deep never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 8 samples across 2 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Mosslake_deep is not rated for water quality — its monitoring record does not meet the evidence bar. Bacteria levels can spike quickly after heavy rain, so always check Wisconsin's current beach and health-department advisories before you swim.
What is the water temperature of Mosslake_deep?
- Mosslake_deep typically sits around 71°F at the surface in July, from 21 EPA Water Quality Portal field readings (2024–2024). That is a typical value for the month, not a live reading.
How deep is Mosslake_deep?
- Mosslake_deep has a maximum depth of 29 feet. The lake covers 185 acres.
What fish are in Mosslake_deep?
- Fish species found in Mosslake_deep include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Mosslake_deep is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Mosslake_deep?
- Wisconsin DNR lists Panfish as common on Mosslake_deep. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Mosslake_deep — official chemistry is on file, not a letter, and the water-quality trend over 5 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Mosslake_deep across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2021–2022. 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)
LDFWATER20072 samples · 2021–2022
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 4500 P F ~ Phosphorus in Water by Colorimetry Automated Ascorbic Acid Method
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