Spring Lake
Manitowoc County, Wisconsin9 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Spring Lake. Here is what has been measured.
- Mesotrophic
- Purple Loosestrife
- 23 ft max depth
- Public access
Spring Lake in Manitowoc County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 19.3 µg/L. Maximum depth: 23 ft. Surface area: 9 acres.
Wisconsin DNR rates Panfish as abundant on Spring Lake. DNR survey details →
Spring Lake is a 9-acre mesotrophic lake in Manitowoc County, Wisconsin with a maximum depth of 23 feet. Water clarity is declining over recent sampling years. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 15 other monitored lakes in Manitowoc County, Spring Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-23. Methodology: how these readings are compared.
What Spring Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing4 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 Spring 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 Spring Lake
These are the measurements Wisconsin DNR publishes for Spring Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. Phosphorus 19.3 µg/L. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 19.3µg/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. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Spring Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Spring Lake typically sits around 72°F at the surface in August. Summer average is about 74°F. Usually warmest in Jul (about 76°F) and coldest in Aug (about 72°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (72°F) to its warmest (76°F).
Typical surface water temperature by month, from 8 field readings (2024–2026) via the EPA Water Quality Portal. See the full Spring Lake water temperature breakdown →
Wisconsin DNR rates Panfish as abundant on Spring Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Spring Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is stable. 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. 1 station on file (most recent sample 2024).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Spring Lake covering fish populations, stocking, water quality, and management. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2015Carstens Lake spring survey 2015Fisheries Survey · WI DNR · 2015 (PDF)
- 2015Tuma Lake spring survey 2015Fisheries Survey · WI DNR · 2015 (PDF)
Lake Details
Max depth
23 ft
Surface area
9 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Spring LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Spring Lake
Compare lakeside cabins, hotels, and vacation rentals near Spring Lake in Manitowoc 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 Spring Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Spring 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: Stable
Based on 5 years of monitoring (2020–2026).
Water clarity
Worsening5 years
Phosphorus
Improving-0.6 µg/L/yr5 years
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Spring Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- St Nazianz Wastewater Treatment FacilitySt Nazianz · 2.4 mi away · NPDES WI0022195Recent violation
- Robinway Dairy FarmsMeeme, Town Of · 1.2 mi away · NPDES WI0066231
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 Manitowoc County
Frequently asked questions about Spring Lake
Where is Spring Lake?
- Spring Lake is a lake in Manitowoc County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Spring Lake?
- Spring Lake in Manitowoc County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8 ft visibility. Phosphorus: 19.3 µg/L. Maximum depth: 23 ft. Surface area: 9 acres.
Is Spring 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 Spring Lake?
- Spring Lake typically sits around 72°F at the surface in August, from 8 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Spring Lake?
- Spring Lake has a maximum depth of 23 feet. The lake covers 9 acres.
What fish are in Spring Lake?
- Fish species found in Spring Lake include Panfish, Largemouth Bass, Northern Pike, Trout. Spring Lake is located in Manitowoc County, Wisconsin.
What did the DNR fisheries survey find at Spring Lake?
- Wisconsin DNR rates Panfish as abundant on Spring Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Spring Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Spring Lake?
- Spring Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Spring Lake. Public access is listed as yes.
Can I fish at Spring Lake?
- Spring Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. 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 Spring Lake across LakeQuality
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Where this data comes from
31 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_WQX31 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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory