Long Lake Plainfield
Long Lake Plainfield in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. 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 →
- Clarity
- 5.2 ft
- Max depth
- 14 ft
- Area
- 40 acres
- Public access
- Yes
Next lake in Waushara County
Swipe left or right on this bar to open the next or previous lake.
Why Long Lake Plainfield 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 Long Lake Plainfield, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus 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.
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 with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-09-09. Grade methodology: LakeQuality methodology.
Watch Long Lake Plainfield water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Long Lake Plainfield
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 5.2 ft. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Long Lake Plainfield
Compare lakeside cabins, hotels, and vacation rentals near Long Lake Plainfield in Waushara 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 Long Lake Plainfield
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Wisconsin DNR rates Panfish as abundant on Long Lake Plainfield.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Long Lake Plainfield — official chemistry is on file, not a letter. 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
| Characteristic | Value |
|---|---|
| Maximum Depth | 14 ft |
| Surface Area | 40 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lake Huron County ParkPublic
- Long 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 Long Lake Plainfield
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.
Graded lakes near Long Lake Plainfield
Long Lake Plainfield has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Long Lake Plainfield?
- Long Lake Plainfield in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.2 ft visibility. Maximum depth: 14 ft. Surface area: 40 acres.
Is Long Lake Plainfield safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Long Lake Plainfield is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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 a water-quality grade. LakeQuality does not assign an A–F grade on Long Lake Plainfield — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Long Lake Plainfield?
- Long Lake Plainfield has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Lake Huron County Park, Long Lake. Public access is listed as yes.
Explore Long Lake Plainfield across LakeQuality
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Waushara County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
State Parks Near Long Lake Plainfield
Other Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
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)
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