Long Lake Plainfield
Waushara County, Wisconsin40 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Long Lake Plainfield. Here is what has been measured.
- 14 ft max depth
- Public access
- Limited data
Long Lake Plainfield in Waushara County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 5.2 ft visibility. Maximum depth: 14 ft. Surface area: 40 acres.
Wisconsin DNR rates Panfish as abundant on Long Lake Plainfield. DNR survey details →
Long Lake Plainfield is a 40-acre lake in Waushara County, Wisconsin with a maximum depth of 14 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-09-09. Methodology: how these readings are compared.
What Long Lake Plainfield is good for
From access and monitoring records, not editorial picks.
- Fishing3 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Long Lake Plainfield is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Long Lake Plainfield
These are the measurements Wisconsin DNR publishes for Long Lake Plainfield, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.2 ft. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Long Lake Plainfield
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR rates Panfish as abundant on Long Lake Plainfield.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Long Lake Plainfield’s water-quality measurements separately. 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. 2 stations on file (most recent sample 2020).
Fish Species (DNR-rated)
Lake Details
Max depth
14 ft
Surface area
40 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
19 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.7 mi
HydroLAKES / HydroSHEDS
Elevation
1,119 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Long Lake Plainfield
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Top-rated places to stay near Long Lake Plainfield
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Follow Long Lake Plainfield’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Long Lake Plainfield
- → Long Lake Plainfield fishing: DNR survey catch rates, species & stocking
- → Long Lake Plainfield fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Long Lake Plainfield fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Long Lake Plainfield? (mercury & PFAS guide)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Long Lake Plainfield under Clean Water Act (NPDES) discharge permits.
- Almond Wastewater Treatment FacilityAlmond · 4.5 mi away · NPDES WI0060780
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.
Nearby Lakes in Waushara County
Frequently asked questions about Long Lake Plainfield
Where is Long Lake Plainfield?
- Long Lake Plainfield is a lake in Waushara County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Long Lake Plainfield?
- Long Lake Plainfield in Waushara County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 5.2 ft visibility. Maximum depth: 14 ft. Surface area: 40 acres.
Is Long Lake Plainfield safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Long Lake Plainfield?
- Long Lake Plainfield has a maximum depth of 14 feet. The lake covers 40 acres.
What fish are in Long Lake Plainfield?
- Fish species found in Long Lake Plainfield include Panfish, Largemouth Bass, Northern Pike. Long Lake Plainfield is located in Waushara County, Wisconsin.
What did the DNR fisheries survey find at Long Lake Plainfield?
- Wisconsin DNR rates Panfish as abundant on Long Lake Plainfield. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Long Lake Plainfield’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Long Lake Plainfield?
- Public access to Long Lake Plainfield is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Long Lake Plainfield across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX1 sample · 2020
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from 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