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LakeQuality

Wb-B Agassiz Nwr Lake

Marshall County, MinnesotaView mapDirections

No nutrient or algae sampling on record from Minnesota PCA for this lake.

Max depth
~31 ft est.
GLOBathy model
  • 31 ft max depth
  • Limited data

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Answers come straight from the public measurements and survey records on this page.

Wb-B Agassiz Nwr Lake in Marshall County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.

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Wb-B Agassiz Nwr Lake is a lake in Marshall County, Minnesota with an estimated average depth of about 31 feet.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-10-26. Grade methodology: LakeQuality methodology.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Wb-B Agassiz Nwr 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.

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Water quality measurements for Wb-B Agassiz Nwr Lake

These are the measurements Minnesota PCA publishes for Wb-B Agassiz Nwr Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

MetricValueEPA condition class
Water Clarity (Secchi Depth)No recent samples
PhosphorusNo recent samples
Chlorophyll-a (Algae)No recent samples

Lake Details

CharacteristicValue
Maximum Depth~31 ft est.
Average Depth~2 ft est.

Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Minnesota has not published bathymetry for Wb-B Agassiz Nwr Lake.

Lake Size & Watershed

Watershed (drainage) area
250 sq mi
Surface area
531 acres
Shoreline
13.1 mi
Elevation
1,132 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.

Fishing Wb-B Agassiz Nwr Lake

Nearby Lakes in Marshall County

Frequently asked questions about Wb-B Agassiz Nwr Lake

Where is Wb-B Agassiz Nwr Lake?

Wb-B Agassiz Nwr Lake is a lake in Marshall County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.

What is the water quality of Wb-B Agassiz Nwr Lake?

Wb-B Agassiz Nwr Lake in Marshall County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.

Is Wb-B Agassiz Nwr Lake safe to swim in?

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

How deep is Wb-B Agassiz Nwr Lake?

No published bathymetric survey covers Wb-B Agassiz Nwr Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 31 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.

Where this data comes from

2 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • USGS Minnesota Water Science CenterUSGS-MN2 samples · 2020

Analytical methods

  • YSI Environmental, sensor 6136
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