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LakeQuality

Andrew Lake

NR
Not yet rated
9 ft clear · Mesotrophic · 759 acres
Limited DataMesotrophic

Andrew Lake in Kandiyohi County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 26 ft. Surface area: 758.89 acres.

Clarity
9 ft
Typical in August
74°F
Max depth
26 ft
Area
759 acres
Trend
Stable
Public access
Yes
Ice-out
Apr 8
Open water
237 days

Next lake in Kandiyohi County

CMiddle Lake5.4 ft clear · Kandiyohi CountyView →
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Why Andrew Lake has no grade

We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Andrew Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).

Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.

Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.

Andrew Lake is a 759-acre lake in Kandiyohi County, Minnesota with a maximum depth of 26 feet. The lake supports 16 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 2 public boat landings.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-16. Grade methodology: LakeGrade methodology.

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Swimming Safety

Not rated

Limited data

Not rated for swimming — there is not enough monitoring data to judge this lake

Compare the safest swimming lakes near Willmar

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Water quality measurements for Andrew Lake

These readings exist but do not meet the evidence bar for an A–F grade — see why.

Moderate clarity, visible to about 9 ft. Trophic State Index: 45.

MetricValueGrade
Water Clarity (Secchi Depth)9 ftNot graded
PhosphorusNo recent samples
Chlorophyll-a (Algae)No recent samples
Trophic State Index (TSI)45Mesotrophic

Moderate nutrients, good water quality

Where to stay near Andrew Lake

Compare lakeside cabins, hotels, and vacation rentals near Andrew Lake in Kandiyohi County, Minnesota — 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 Andrew Lake

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a whole trip? See where to stay at Minnesota’s top lakes →

Water Temperature

Andrew Lake typically sits around 74°F at the surface in August. Summer average is about 75°F. Usually warmest in Jul (about 76°F) and coldest in Sep (about 64°F). These are typical values by month — not a live reading.

Jan
Feb
Mar
Apr
May
Jun
Jul
76°
Aug
74°
Sep
64°
Oct
Nov
Dec

Typical surface water temperature by month, from 11 field readings (20172025) via the EPA Water Quality Portal. See the full Andrew Lake water temperature breakdown →

Lake Details

CharacteristicValue
Maximum Depth26 ft
Surface Area759 acres
Shoreline Length4.7 mi
Littoral Zone39%
Public AccessYes

Lake Size & Watershed

Watershed (drainage) area
5 sq mi
Elevation
1,181 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).

Recreation & Access

2
Boat Landings
Yes
Public Access
  • Andrew Lake (North)Public
  • Andrew Lake (South)Public

Fish Species

Click a species to see every graded lake where it is documented.

Fishing Andrew 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.

Eurasian watermilfoilzebra mussel

DNR Fisheries Survey Summary

19 surveys on file from MN DNR Fisheries. Most recent: 2024-06-24 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluntnose Minnow92.64
GOS29.32
Bluegill22.590.13 lb
IOD15.95
Largemouth Bass13.040.58 lb
Walleye10.411.76 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

Length Distributions

Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.

Bluegill

441 fish · 28 in · 2024-06-24
1477402345678

Largemouth Bass

150 fish · 419 in · 2024-06-24
41210trophy 204681012141618

Walleye

26 fish · 627 in · 2024-06-24
420trophy 2468101214161820222426

From the 2024-06-24 survey

A standard survey of Lake Andrew was conducted in late June of 2024. A targeted survey is generally used for sampling a specific kind of fish or time of year (i.e., spawning season, fall season, etc.) unlike a standard survey which samples a wider range of fish species during the summer months using standard…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Andrew Lake. 3 reports on file.

These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable-0.014 m/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (15 observations).

Typical Ice-Out
Apr 8
Typical Ice-In
Dec 1

Estimated open water season: 237 days

EarliestLatest
Ice-Out2007-04-01 (2007)2008-04-25 (2008)
Ice-In2013-11-21 (2013)2004-12-14 (2004)

Most recent ice-out: 2008-04-25

EPA Impairment Status

Andrew Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)Mercury

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN34-0206-00 · Official waterbody report

Graded lakes near Andrew Lake

Andrew Lake has no grade, but these lakes within a short drive do.

Nearby Lakes in Kandiyohi County

Frequently asked questions about Andrew Lake

What is the water quality grade for Andrew Lake?

Andrew Lake in Kandiyohi County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Maximum depth: 26 ft. Surface area: 758.89 acres.

Is Andrew Lake safe to swim in?

Not rated for swimming — there is not enough monitoring data to judge this lake. Andrew Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.

What is the water temperature of Andrew Lake?

Andrew Lake typically sits around 74°F at the surface in August, from 11 EPA Water Quality Portal field readings (2017–2025). That is a typical value for the month, not a live reading.

How deep is Andrew Lake?

Andrew Lake has a maximum depth of 26 feet. The lake covers 758.89 acres.

What fish are in Andrew Lake?

Fish species found in Andrew Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, common carp, freshwater drum, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, white sucker, yellow bullhead, yellow perch. Andrew Lake is located in Kandiyohi County, Minnesota.

When does Andrew Lake thaw?

Andrew Lake typically has ice-out around Apr 8. Ice typically forms around Dec 1. The open water season is approximately 237 days.

Are there boat ramps on Andrew Lake?

Andrew Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Andrew Lake (North), Andrew Lake (South). Public access is listed as yes.

Where this data comes from

41 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Minnesota Pollution Control Agency - Ambient Surface WaterMNPCA40 samples · 2020–2025
  • Minnesota Department of Agriculture - Pesticide MonitoringMNDA_PESTICIDE1 sample · 2022

Analytical methods

  • Field measurement/observation, generic method
Monitoring station identifiers (3)

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

Impairment status from EPA ATTAINS 303(d) database

Lake size & watershed from HydroLAKES (HydroSHEDS)

Lake details from Minnesota DNR LakeFinder

Named boat-access points from the USGS National Boat Ramps inventory

Ice data from Minnesota DNR Climate