Reisner Lake
Florence County, Wisconsin96 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Reisner Lake. Here is what has been measured.
- Mesotrophic
- Purple Loosestrife
Reisner Lake in Florence County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 6.5 ft visibility. Phosphorus: 18.1 µg/L. Surface area: 96 acres.
Wisconsin DNR lists Panfish as present on Reisner Lake. DNR survey details →
Reisner Lake is a 96-acre mesotrophic lake in Florence County, Wisconsin. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Compared to the 11 other monitored lakes in Florence County, Reisner Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-10. Methodology: how these readings are compared.
What Reisner Lake is good for
From access and monitoring records, not editorial picks.
- Fishing3 species recorded
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Reisner Lake 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 Reisner Lake
These are the measurements Wisconsin DNR publishes for Reisner Lake, 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 6.5 ft. Phosphorus 18.1 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 18.1µg/L | Good GoodFairPoor |
| 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. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Reisner Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Reisner Lake typically sits around 56°F at the surface in October. Summer average is about 74°F. Usually warmest in Jul (about 80°F) and coldest in Oct (about 56°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (56°F) to its warmest (80°F).
Typical surface water temperature by month, from 36 field readings (2024–2025) via the EPA Water Quality Portal. See the full Reisner Lake water temperature breakdown →
Wisconsin DNR lists Panfish as present on Reisner Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Reisner Lake’s water-quality measurements separately, and the water-quality trend over 7 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. Monitored by volunteers since 2020. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Surface area
96 acres
The available depth estimate for Reisner Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.6 mi
HydroLAKES / HydroSHEDS
Elevation
1,486 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Reisner Lake
Compare lakeside cabins, hotels, and vacation rentals near Reisner Lake in Florence 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 Reisner Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
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Fish Species
Click a species to see every lake where it is documented.
Fishing Reisner 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: Improving
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving7 years
Phosphorus
Stable0 µg/L/yr3 years
Nearby Lakes in Florence County
Frequently asked questions about Reisner Lake
Where is Reisner Lake?
- Reisner Lake is a lake in Florence County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Reisner Lake?
- Reisner Lake in Florence County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 6.5 ft visibility. Phosphorus: 18.1 µg/L. Surface area: 96 acres.
Is Reisner Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Reisner Lake?
- Reisner Lake typically sits around 56°F at the surface in October, from 36 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Reisner Lake?
- The available depth estimate for Reisner Lake is shallower than its measured water clarity, which cannot be right, so no depth is shown. The lake covers 96 acres.
What fish are in Reisner Lake?
- Fish species found in Reisner Lake include Panfish, Largemouth Bass, Northern Pike. Reisner Lake is located in Florence County, Wisconsin.
What did the DNR fisheries survey find at Reisner Lake?
- Wisconsin DNR lists Panfish as present on Reisner Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Reisner Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Reisner Lake across LakeQuality
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Where this data comes from
79 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX79 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes