Martin Lake
Anoka County, Minnesota232 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Martin Lake. Here is what has been measured.
- Eutrophic
- Impaired · Mercury
- 20 ft max depth
- Public access
Martin Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 55 µg/L. Chlorophyll-a (algae): 29.4 µg/L. Maximum depth: 20 ft. Surface area: 232.31 acres.
Minnesota DNR's Targeted Survey on July 1, 2024 caught 1.00 walleye per gill net at Martin Lake. DNR survey details →
Martin Lake is a 232-acre productive, nutrient-rich eutrophic lake in Anoka County, Minnesota with a maximum depth of 20 feet. Phosphorus level is declining over recent sampling years. The lake supports 13 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 1 public boat landing. Compared to the 22 other monitored lakes in Anoka County, Martin Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-24. Methodology: how these readings are compared.
Martin Lake covers about 230 acres in Anoka County. It has one public boat landing. The median ice-out date is April 8, which is when the open-water season begins. Vrbo is where to look for cabins and lake homes around Martin Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Martin Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing13 species recorded
- Ice seasonIce-out around Apr 8
Swimming conditions
Readings onlyRecreation use not supported
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. Martin Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Martin 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 Martin Lake
These are the measurements Minnesota PCA publishes for Martin Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.5 ft of visibility. Phosphorus 55 µg/L. Chlorophyll-a 29.4 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 55µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 29.4µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 63 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Martin Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Martin Lake typically sits around 73°F at the surface in September. Summer average is about 76°F. Usually warmest in Jul (about 80°F) and coldest in May (about 60°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (60°F) to its warmest (80°F).
Typical surface water temperature by month, from 144 field readings (2016–2025) via the EPA Water Quality Portal. See the full Martin Lake water temperature breakdown →
Minnesota DNR's Targeted Survey on July 1, 2024 caught 1.00 walleye per gill net at Martin Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Martin 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
12 surveys on file from MN DNR Fisheries. Most recent: 2024-07-01 (Targeted Survey).
12 surveys on file · most recent 2024-07-01 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Black Bullhead | 46.96 | 9–12 in 2024-07-01 | 0.43 lb |
| White Crappie | 21.17 | 4–10 in 2015-06-28 | 0.24 lb |
| Bluegill | 20.56 | 3–7 in 2024-07-01 | 0.2 lb |
| Black Crappie | 11.57 | 4–10 in 2024-07-01 | 0.23 lb |
| Yellow Perch | 3.65 | 5–8 in 2024-07-01 | 0.15 lb |
| Common Carp | 2.85 | 24–25 in 2024-07-01 | 3.97 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.
Black Bullhead
White Crappie
Bluegill
Black Crappie
From the 2024-07-01 survey
Martin Lake is a 232-acre, class 24 lake located in northern Anoka County, about 5 miles west of the town of Wyoming. The lake has 140 littoral acres, and a maximum depth of 20 feet. The primary management species is Walleye, and the secondary management species are Bluegill and Black Crappie. To prevent winter kills,…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Martin Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — MartinFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — MartinFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — MartinPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
20 ft
Surface area
232 acres
Shoreline
3.2 mi
Littoral zone
60%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
25 sq mi
HydroLAKES / HydroSHEDS
Elevation
886 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Martin 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 Martin Lake
Compare lakeside cabins, hotels, and vacation rentals near Martin Lake in Anoka 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Martin Lake are listed below.
Top-rated places to stay near Martin 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 →
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Fish Species
Click a species to see every lake where it is documented.
Fishing Martin Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Stable6 years
Phosphorus
Worsening+2.34 µg/L/yr5 years
Chlorophyll-a
Improving-1.42 µg/L/yr5 years
Ice season
Typical ice-out
Apr 8
Earliest Mar 16, 2016 · Latest Apr 23, 2008
Typical ice-in
Nov 23
Earliest Nov 4, 1991 · Latest Dec 20, 2001
Most recent ice-out
Apr 15
2022
59 observations · Minnesota PCA ice records
EPA Impairment Status
Martin Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN02-0034-00 · Official waterbody report
Nearby Lakes in Anoka County
Frequently asked questions about Martin Lake
Where is Martin Lake?
- Martin 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 Martin Lake?
- Martin Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 2.5 ft visibility. Phosphorus: 55 µg/L. Chlorophyll-a (algae): 29.4 µg/L. Maximum depth: 20 ft. Surface area: 232.31 acres.
Is Martin Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Martin Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Martin Lake?
- Martin Lake typically sits around 73°F at the surface in September, from 144 EPA Water Quality Portal field readings (2016–2025). That is a typical value for the month, not a live reading.
How deep is Martin Lake?
- Martin Lake has a maximum depth of 20 feet. The lake covers 232.31 acres.
What fish are in Martin Lake?
- Fish species found in Martin Lake include black bullhead, black crappie, bluegill, brown bullhead, common carp, hybrid crappie, hybrid sunfish, northern pike, pumpkinseed, walleye, white crappie, yellow bullhead, yellow perch. Martin Lake is located in Anoka County, Minnesota.
What did the DNR fisheries survey find at Martin Lake?
- Minnesota DNR's Targeted Survey on July 1, 2024 caught 1.00 walleye per gill net at Martin Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Martin 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 Martin Lake thaw?
- Martin Lake typically has ice-out around Apr 8. Ice typically forms around Nov 23. The open water season is approximately 229 days.
Are there boat ramps on Martin Lake?
- Martin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Martin Lake. Public access is listed as yes.
Can I fish at Martin Lake?
- Martin 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 Martin Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Minnesota
Fish species and best lakes in Anoka County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Rum River Watershed, ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Martin Lake
Other Lakes in Minnesota
Eutrophic Lakes in Minnesota
Where this data comes from
310 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
MNPCA310 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity, Nephelometric Method
- Turbidity by Nephelometry
- Turbidity, Probe Method
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
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