Netta Lake
Anoka County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Netta Lake. Here is what has been measured.
- Mesotrophic
- 35 ft max depth
- Public access
Netta Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 11.3 ft visibility. Phosphorus: 14.5 µg/L. Chlorophyll-a (algae): 4.6 µg/L.
Netta Lake is a mesotrophic lake in Anoka County, Minnesota with an estimated average depth of about 35 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 22 other monitored lakes in Anoka County, Netta Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-09-19. Methodology: how these readings are compared.
What Netta Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11.3 ft of visibility
- Boat launch1 documented ramp
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 Netta Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Netta Lake
These are the measurements Minnesota PCA publishes for Netta Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 11.3 ft. Phosphorus 14.5 µg/L. Chlorophyll-a 4.6 µg/L. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 14.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 4.6µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Netta Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Netta Lake typically sits around 70°F at the surface in September. Summer average is about 74°F. Usually warmest in Aug (about 75°F) and coldest in May (about 62°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (62°F) to its warmest (75°F).
Typical surface water temperature by month, from 155 field readings (2010–2023) via the EPA Water Quality Portal. See the full Netta Lake water temperature breakdown →
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Netta Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Public Water Access Sites — NettaPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
~35 ft est.
Public access
Yes
Listed by Minnesota PCA
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Minnesota has not published bathymetry for Netta Lake.
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Surface area
121 acres
HydroLAKES / HydroSHEDS
Shoreline
2.6 mi
HydroLAKES / HydroSHEDS
Elevation
886 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Gladys Jones ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Netta Lake
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Top-rated places to stay near Netta Lake
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Follow Netta Lake’s readings
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Fishing Netta Lake
Water quality readings over time
2 seasons of samples on record (2021–2023). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Stable+0.25 µg/L/yr2 years
Chlorophyll-a
Worsening+0.3 µg/L/yr2 years
Nearby Lakes in Anoka County
Frequently asked questions about Netta Lake
Where is Netta Lake?
- Netta Lake is a lake in Anoka County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Netta Lake?
- Netta Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 11.3 ft visibility. Phosphorus: 14.5 µg/L. Chlorophyll-a (algae): 4.6 µg/L.
Is Netta 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 Netta Lake?
- Netta Lake typically sits around 70°F at the surface in September, from 155 EPA Water Quality Portal field readings (2010–2023). That is a typical value for the month, not a live reading.
How deep is Netta Lake?
- No published bathymetric survey covers Netta Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Netta Lake?
- Netta Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Gladys Jones Park. Public access is listed as yes.
Can I fish at Netta Lake?
- Netta 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 Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Netta Lake across LakeQuality
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Where this data comes from
65 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA65 samples · 2021–2023
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory