Spring Lake
Spring Lake in Manitowoc County, Wisconsin has a water quality grade of B (Good). 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 →
- Clarity
- 8 ft
- Typical in August
- 72°F
- Max depth
- 23 ft
- Area
- 9 acres
- Type
- Mesotrophic
- Trend
- → Stable
- Public access
- Yes
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Spring Lake is a 9-acre mesotrophic lake in Manitowoc County, Wisconsin with a maximum depth of 23 feet. Water quality is graded B based on 1 sampling years through 2026. 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. 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)
Moderate clarity, visible to about 8 ft. Phosphorus level: 19.3 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | Not graded |
| Phosphorus | 19.3 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay 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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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
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.
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 a water-quality grade. LakeQuality grades Spring Lake B from EPA Water Quality Portal chemistry, 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
| Characteristic | Value |
|---|---|
| Maximum Depth | 23 ft |
| Surface Area | 9 acres |
| Public Access | Yes |
Recreation & Access
- Spring 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 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 data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.422 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.6 µg/L/yr | 5 |
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.
County Ranking
Ranked #5 of 16 lakes in Manitowoc County
Nearby Lakes in Manitowoc County
Frequently asked questions about Spring Lake
Where is Spring Lake?
- Spring Lake is a lake in Manitowoc County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Spring Lake?
- Spring Lake in Manitowoc County, Wisconsin has a water quality grade of B (Good). 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?
- Good for swimming, clear water with low algae levels. Spring Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
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 a water-quality grade. LakeQuality grades Spring Lake B from EPA Water Quality Portal chemistry, 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.
Explore Spring Lake across LakeQuality
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Moderate nutrients, good water quality
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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)
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)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory