Parker Lake
Parker Lake in Adams County, Wisconsin has a water quality grade of B (Good). Water clarity: 17 ft visibility. Phosphorus: 14.8 µg/L. Maximum depth: 36 ft. Surface area: 57 acres.
- Clarity
- 17 ft
- Max depth
- 36 ft
- Area
- 57 acres
- Type
- Oligotrophic
- Trend
- → Stable
- Public access
- Yes
Next lake in Adams County
Parker Lake is a 57-acre cold, clear oligotrophic lake in Adams County, Wisconsin with a maximum depth of 36 feet. Water quality is graded B based on 1 sampling years through 2025. Water clarity is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available. Compared to the 17 other monitored lakes in Adams County, Parker Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Crystal clear, you can see 17 ft down. Phosphorus level: 14.8 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 17 ft | Not graded |
| Phosphorus | 14.8 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Parker Lake
Compare lakeside cabins, hotels, and vacation rentals near Parker Lake in Adams 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 36 ft |
| Surface Area | 57 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Parker 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.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1990. 5 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Water Quality Trend: → Stable
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.286 m/yr | 6 |
| Phosphorus | ↓ Declining | +0.7 µg/L/yr | 7 |
County Ranking
Ranked #11 of 18 lakes in Adams County
Nearby Lakes in Adams County
Frequently asked questions about Parker Lake
What is the water quality grade for Parker Lake?
- Parker Lake in Adams County, Wisconsin has a water quality grade of B (Good). Water clarity: 17 ft visibility. Phosphorus: 14.8 µg/L. Maximum depth: 36 ft. Surface area: 57 acres.
Is Parker Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Parker Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Parker Lake?
- Parker Lake has a maximum depth of 36 feet. The lake covers 57 acres.
What fish are in Parker Lake?
- Fish species found in Parker Lake include Panfish, Largemouth Bass, Northern Pike. Parker Lake is located in Adams County, Wisconsin.
Explore Parker Lake across LakeGrade
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Low nutrients, clear water, excellent for swimming
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Where this data comes from
28 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX28 samples · 2020–2025
Analytical methods
- Phosphorus by Colorimetry
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