Floyd Lake
Becker County, Minnesota1,178 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Floyd Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
- zebra mussel
- 34 ft max depth
- Public access
Floyd Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 13.1 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 34 ft. Surface area: 1177.84 acres.
Minnesota DNR's Standard Survey on June 21, 2021 caught 3.89 walleye per gill net at Floyd Lake. DNR survey details →
Free interactive depth-contour map of Floyd Lake, reaching a maximum surveyed depth of 30 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Minnesota DNR.
Floyd Lake is a 1,178-acre mesotrophic lake in Becker County, Minnesota with a maximum depth of 34 feet. Overall water quality is improving over recent sampling years. The lake supports 16 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 1 public boat landing. Compared to the 83 other monitored lakes in Becker County, Floyd Lake ranks #21 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-26. Methodology: how these readings are compared.
Floyd Lake covers about 1,200 acres in Becker County. It has one public boat landing. The median ice-out date is April 24, which is when the open-water season begins. Vrbo is where to look for cabins and lake homes around Floyd Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Floyd Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13.1 ft of visibility
- Boat launch1 documented ramp
- Fishing16 species recorded
- Ice seasonIce-out around Apr 24
- Deep water34 ft surveyed max depth
- Big water1,178 acres
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. Floyd Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Floyd 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 Floyd Lake
These are the measurements Minnesota PCA publishes for Floyd 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 13.1 ft. Phosphorus 12 µg/L. Chlorophyll-a 3.6 µg/L. TSI 41.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 13.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 12µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 3.6µg/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. | 41 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Floyd Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Floyd Lake typically sits around 65°F at the surface in September. Summer average is about 71°F. Usually warmest in Jul (about 73°F) and coldest in Apr (about 48°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (48°F) to its warmest (73°F).
Typical surface water temperature by month, from 640 field readings (2016–2025) via the EPA Water Quality Portal.
Minnesota DNR's Standard Survey on June 21, 2021 caught 3.89 walleye per gill net at Floyd Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Floyd Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. 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: 2021-06-21 (Standard Survey).
12 surveys on file · most recent 2021-06-21 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluntnose Minnow | 82.96 | ||
| Fathead Minnow | 66.65 | ||
| Bluegill | 27.16 | 2–9 in 2021-06-21 | 0.2 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.
Bluegill
From the 2021-06-21 survey
Floyd (a.k.a., Big Floyd) Lake is a 1,212-acre lake located in Becker County two miles north of the city of Detroit Lakes. Floyd Lake's shoreline is heavily developed, and the lake receives a high amount of angling pressure and recreational use. Floyd Lake consists of two basins, the shallow larger main basin and the…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Floyd Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — FloydFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — FloydFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — FloydPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
34 ft
Surface area
1,178 acres
Shoreline
9.7 mi
Littoral zone
73%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Recreation & Access
- Floyd 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 Floyd Lake
Compare lakeside cabins, hotels, and vacation rentals near Floyd Lake in Becker 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 Floyd 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 Floyd 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.
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving6 years
Phosphorus
Stable+0.37 µg/L/yr6 years
Chlorophyll-a
Improving-0.3 µg/L/yr6 years
Ice season
Typical ice-out
Apr 24
Earliest Mar 24, 2012 · Latest May 12, 2013
Typical ice-in
Nov 24
Earliest Nov 7, 2019 · Latest Dec 5, 2009
Most recent ice-out
Apr 7
2025
33 observations · Minnesota PCA ice records
EPA Impairment Status
Floyd 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.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN03-0387-02 · Official waterbody report
Nearby Lakes in Becker County
Frequently asked questions about Floyd Lake
Where is Floyd Lake?
- Floyd Lake is a lake in Becker County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Floyd Lake?
- Floyd Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 13.1 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 34 ft. Surface area: 1177.84 acres.
Is Floyd Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Floyd Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Floyd Lake?
- Floyd Lake typically sits around 65°F at the surface in September, from 640 EPA Water Quality Portal field readings (2016–2025). That is a typical value for the month, not a live reading.
How deep is Floyd Lake?
- Floyd Lake has a maximum depth of 34 feet. The lake covers 1177.84 acres.
What fish are in Floyd Lake?
- Fish species found in Floyd Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, sunfish, walleye, white sucker, yellow bullhead, yellow perch. Floyd Lake is located in Becker County, Minnesota.
What did the DNR fisheries survey find at Floyd Lake?
- Minnesota DNR's Standard Survey on June 21, 2021 caught 3.89 walleye per gill net at Floyd Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Floyd Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
When does Floyd Lake thaw?
- Floyd Lake typically has ice-out around Apr 24. Ice typically forms around Nov 24. The open water season is approximately 214 days.
Are there boat ramps on Floyd Lake?
- Floyd Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Floyd Lake. Public access is listed as yes.
Can I fish at Floyd Lake?
- Floyd 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 Floyd 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 Becker County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Detroit Lakes Area area
Top lakes and where to stay in the Park Rapids Area area
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Red River of the North Watershed, ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Floyd Lake
Other Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Compare Floyd Lake With Nearby Lakes
Where this data comes from
215 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA215 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 (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
Impairment status from EPA ATTAINS 303(d) database
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate