Little Newton Lake
Little Newton Lake in Marinette County, Wisconsin has a water quality grade of B (Good). Water clarity: 10.5 ft visibility. Phosphorus: 13.2 µg/L. Maximum depth: 53 ft. Surface area: 59 acres.
- Clarity
- 10.5 ft
- Max depth
- 53 ft
- Area
- 59 acres
- Type
- Mesotrophic
- Trend
- ↓ Declining
- Public access
- Yes
Next lake in Marinette County
Little Newton Lake is a 59-acre mesotrophic lake in Marinette County, Wisconsin with a maximum depth of 53 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality 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 2 public boat landings. Compared to the 9 other monitored lakes in Marinette County, Little Newton Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-27. Grade methodology: LakeGrade 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)
Good clarity, visible to about 10.5 ft. Phosphorus level: 13.2 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | Not graded |
| Phosphorus | 13.2 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Little Newton Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Newton Lake in Marinette 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 53 ft |
| Surface Area | 59 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Big Newton LakePublic
- Little Newton LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Little Newton 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.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1989. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.125 m/yr | 7 |
| Phosphorus | ↓ Declining | +1.73 µg/L/yr | 6 |
County Ranking
Ranked #4 of 10 lakes in Marinette County
Nearby Lakes in Marinette County
Frequently asked questions about Little Newton Lake
What is the water quality grade for Little Newton Lake?
- Little Newton Lake in Marinette County, Wisconsin has a water quality grade of B (Good). Water clarity: 10.5 ft visibility. Phosphorus: 13.2 µg/L. Maximum depth: 53 ft. Surface area: 59 acres.
Is Little Newton Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Little Newton Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Little Newton Lake?
- Little Newton Lake has a maximum depth of 53 feet. The lake covers 59 acres.
What fish are in Little Newton Lake?
- Fish species found in Little Newton Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Little Newton Lake is located in Marinette County, Wisconsin.
Are there boat ramps on Little Newton Lake?
- Little Newton Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Big Newton Lake, Little Newton Lake. Public access is listed as yes.
Explore Little Newton Lake across LakeGrade
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Moderate nutrients, good water quality
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State Parks Near Little Newton Lake
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Where this data comes from
56 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_WQX56 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
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