Walker Brook Lake
Clearwater County, Minnesota95 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Walker Brook Lake. Here is what has been measured.
- Mesotrophic
- 45 ft max depth
- Public access
Walker Brook Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 11.1 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Maximum depth: 45 ft. Surface area: 95.24 acres.
Minnesota DNR's Standard Survey on June 23, 2025 caught 0.33 walleye per gill net at Walker Brook Lake. DNR survey details →
Walker Brook Lake is a 95-acre mesotrophic lake in Clearwater County, Minnesota with a maximum depth of 45 feet. Water clarity is declining over recent sampling years. The lake supports 8 documented fish species including black crappie, bluegill, and hybrid sunfish. Public access is available with 1 public boat landing. Compared to the 36 other monitored lakes in Clearwater County, Walker Brook Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-08. Methodology: how these readings are compared.
Walker Brook Lake covers about 95 acres in Clearwater County. It has one public boat landing. The median ice-out date is April 17, which is when the open-water season begins. For a place on the water, look through cabin and lake-house rentals near Walker Brook Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Walker Brook Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11.1 ft of visibility
- Boat launch1 documented ramp
- Fishing8 species recorded
- Ice seasonIce-out around Apr 17
- Deep water45 ft surveyed max depth
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 Walker Brook 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 Walker Brook Lake
These are the measurements Minnesota PCA publishes for Walker Brook 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 11.1 ft. Phosphorus 20 µg/L. Chlorophyll-a 4.5 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 4.5µg/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. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Walker Brook Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on June 23, 2025 caught 0.33 walleye per gill net at Walker Brook Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Walker Brook Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2025-06-23 (Standard Survey).
5 surveys on file · most recent 2025-06-23 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Yellow Perch | 26.78 | 5–6 in 2025-06-23 | 0.16 lb |
| Bluegill | 12.32 | 3–9 in 2025-06-23 | 0.22 lb |
| Green Sunfish | 12.27 | 3–5 in 1996-07-01 | 0.11 lb |
| Largemouth Bass | 7.13 | 3–18 in 2025-06-23 | 1.18 lb |
| Northern Pike | 4.33 | 11–35 in 2025-06-23 | 2.77 lb |
| Hybrid Sunfish | 3.72 | 7–8 in 2015-06-22 | 0.29 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
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.
Yellow Perch
Bluegill
Green Sunfish
Largemouth Bass
From the 2025-06-23 survey
Walker Brook Lake is a 95-acre lake with a maximum depth of 45 feet located 7 miles southeast of Bagley in central Clearwater County. There is a state public water access with an earthen ramp and parking for 5 vehicles/trailers located on the west side of the lake off of County Road 96. The shoreline of the lake is…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Walker Brook Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Walker BrookFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Walker Brook (1696)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Walker BrookFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Walker BrookPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
45 ft
Surface area
95 acres
Shoreline
3 mi
Littoral zone
27%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
6 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,453 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Walker Brook LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Walker Brook Lake
Compare lakeside cabins, hotels, and vacation rentals near Walker Brook Lake in Clearwater 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 Walker Brook Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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 →
Follow Walker Brook Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Walker Brook Lake
- → Walker Brook Lake fishing: DNR survey catch rates, species & stocking
- → Walker Brook Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Walker Brook Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Walker Brook Lake? (mercury & PFAS guide)
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Stable+0.03 µg/L/yr6 years
Chlorophyll-a
Improving-0.1 µg/L/yr6 years
Ice season
Typical ice-out
Apr 17
Earliest Apr 11, 2005 · Latest May 7, 2022
Typical ice-in
Nov 25
Earliest Nov 8, 2003 · Latest Dec 6, 2001
Most recent ice-out
May 7
2022
14 observations · Minnesota PCA ice records
Nearby Lakes in Clearwater County
Frequently asked questions about Walker Brook Lake
Where is Walker Brook Lake?
- Walker Brook Lake is a lake in Clearwater County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Walker Brook Lake?
- Walker Brook Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 11.1 ft visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Maximum depth: 45 ft. Surface area: 95.24 acres.
Is Walker Brook Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Walker Brook Lake?
- Walker Brook Lake has a maximum depth of 45 feet. The lake covers 95.24 acres.
What fish are in Walker Brook Lake?
- Fish species found in Walker Brook Lake include black crappie, bluegill, hybrid sunfish, largemouth bass, northern pike, walleye, yellow bullhead, yellow perch. Walker Brook Lake is located in Clearwater County, Minnesota.
What did the DNR fisheries survey find at Walker Brook Lake?
- Minnesota DNR's Standard Survey on June 23, 2025 caught 0.33 walleye per gill net at Walker Brook Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Walker Brook Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
When does Walker Brook Lake thaw?
- Walker Brook Lake typically has ice-out around Apr 17. Ice typically forms around Nov 25. The open water season is approximately 222 days.
Are there boat ramps on Walker Brook Lake?
- Walker Brook Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Walker Brook Lake. Public access is listed as yes.
Can I fish at Walker Brook Lake?
- Walker Brook 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 Walker Brook Lake across LakeQuality
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Where this data comes from
110 measurements from 2 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 Water
MNPCA110 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (2)
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
Ice data from Minnesota DNR Climate