Patrick Lake
Patrick Lake in Adams County, Wisconsin has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 20 µg/L. Maximum depth: 21 ft. Surface area: 39 acres.
Wisconsin DNR rates Panfish as abundant on Patrick Lake. DNR survey details →
- Clarity
- 5 ft
- Max depth
- 21 ft
- Area
- 39 acres
- Type
- Eutrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Patrick Lake is a 39-acre productive, nutrient-rich eutrophic lake in Adams County, Wisconsin with a maximum depth of 21 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality is declining over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 17 other monitored lakes in Adams County, Patrick Lake ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-09. Grade methodology: LakeQuality 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)
Murky, only visible to about 5 ft. Phosphorus level: 20 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | 20 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Patrick Lake
Compare lakeside cabins, hotels, and vacation rentals near Patrick 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.
Top-rated places to stay near Patrick Lake
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Wisconsin DNR rates Panfish as abundant on Patrick Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Patrick Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 6 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 1986. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 21 ft |
| Surface Area | 39 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Patrick LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Patrick 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 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.936 m/yr | 4 |
| Phosphorus | ↓ Declining | +1.23 µg/L/yr | 6 |
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Patrick Lake under Clean Water Act (NPDES) discharge permits.
- New Chester Dairy LlcNew Chester, Town Of · 1.1 mi away · NPDES WI0064696
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #13 of 18 lakes in Adams County
Nearby Lakes in Adams County
Frequently asked questions about Patrick Lake
Where is Patrick Lake?
- Patrick Lake is a lake in Adams County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Patrick Lake?
- Patrick Lake in Adams County, Wisconsin has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 20 µg/L. Maximum depth: 21 ft. Surface area: 39 acres.
Is Patrick Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Patrick Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Patrick Lake?
- Patrick Lake has a maximum depth of 21 feet. The lake covers 39 acres.
What fish are in Patrick Lake?
- Fish species found in Patrick Lake include Panfish, Largemouth Bass, Northern Pike. Patrick Lake is located in Adams County, Wisconsin.
What did the DNR fisheries survey find at Patrick Lake?
- Wisconsin DNR rates Panfish as abundant on Patrick Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Patrick Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Patrick Lake?
- Patrick Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Patrick Lake. Public access is listed as yes.
Explore Patrick Lake across LakeQuality
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High nutrients, frequent algae, reduced clarity
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State Parks Near Patrick Lake
Other Grade B Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
36 measurements from 1 monitoring station, 2021–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX36 samples · 2021–2026
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
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