Lomond Lake
Clearwater County, Minnesota95 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Lomond Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
- zebra mussel
- 45 ft max depth
- Public access
Lomond Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 10.1 ft visibility. Phosphorus: 20.5 µg/L. Chlorophyll-a (algae): 5.1 µg/L. Maximum depth: 45 ft. Surface area: 94.61 acres.
Minnesota DNR's Targeted Survey on August 22, 2023 caught 17.83 largemouth bass per hour of electrofishing at Lomond Lake. DNR survey details →
Lomond Lake is a 95-acre mesotrophic lake in Clearwater County, Minnesota with a maximum depth of 45 feet. Overall water quality is improving over recent sampling years. The lake supports 10 documented fish species including black crappie, bluegill, and green sunfish. Public access is available with 1 public boat landing. Compared to the 36 other monitored lakes in Clearwater County, Lomond Lake ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-09. Methodology: how these readings are compared.
What Lomond Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.1 ft of visibility
- Boat launch1 documented ramp
- Fishing10 species recorded
- Ice seasonIce-out around Apr 14
- 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. Lomond Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Lomond 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 Lomond Lake
These are the measurements Minnesota PCA publishes for Lomond 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 10.1 ft. Phosphorus 20.5 µg/L. Chlorophyll-a 5.1 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 5.1µg/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. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lomond Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lomond Lake typically sits around 57°F at the surface in September. Summer average is about 58°F. Usually warmest in Jul (about 59°F) and coldest in May (about 50°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (50°F) to its warmest (59°F).
Typical surface water temperature by month, from 443 field readings (2011–2025) via the EPA Water Quality Portal. See the full Lomond Lake water temperature breakdown →
Minnesota DNR's Targeted Survey on August 22, 2023 caught 17.83 largemouth bass per hour of electrofishing at Lomond Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lomond 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
6 surveys on file from MN DNR Fisheries. Most recent: 2023-08-22 (Targeted Survey).
6 surveys on file · most recent 2023-08-22 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 36.35 | 3–9 in 2023-06-20 | 0.26 lb |
| Yellow Perch | 11.99 | 5–7 in 2023-06-20 | 0.12 lb |
| Northern Pike | 4.59 | 10–36 in 2023-06-20 | 1.96 lb |
| Yellow Bullhead | 2.50 | 8–11 in 2023-06-20 | 0.72 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
Yellow Perch
Northern Pike
Yellow Bullhead
From the 2023-08-22 survey
Lomond Lake is a 95-acre lake, located within the City of Bagley in Clearwater County. A targeted survey was completed on Lomond Lake by Bemidji Area Fisheries staff during August of 2023 to assess the nearshore fish community and overall health of the lake. In this survey, 10 nearshore sites (100-foot) were evenly…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lomond Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — LomondFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Lomond (1711)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — LomondFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — LomondPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
45 ft
Surface area
95 acres
Shoreline
2.2 mi
Littoral zone
47%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
4 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,437 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lake LamondPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lomond Lake
Compare lakeside cabins, hotels, and vacation rentals near Lomond 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 Lomond Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Lomond 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
Improving-0.97 µg/L/yr6 years
Chlorophyll-a
Improving-0.18 µg/L/yr6 years
Ice season
Typical ice-out
Apr 14
Earliest Apr 1, 2016 · Latest Apr 27, 2014
Most recent ice-out
Apr 24
2019
8 observations · Minnesota PCA ice records
EPA Impairment Status
Lomond 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 MN15-0081-00 · Official waterbody report
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Lomond Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Bagley WwtpBagley · 1.4 mi away · NPDES MN0022691Recent violation
- Rolfson FarmsBagley · 2.5 mi away · NPDES MN0068683
- Bagley Wwsl(Big Rice Lake)Bagley · 3.1 mi away · NPDES MN0059412
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Clearwater County
Frequently asked questions about Lomond Lake
Where is Lomond Lake?
- Lomond 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 Lomond Lake?
- Lomond Lake in Clearwater County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 10.1 ft visibility. Phosphorus: 20.5 µg/L. Chlorophyll-a (algae): 5.1 µg/L. Maximum depth: 45 ft. Surface area: 94.61 acres.
Is Lomond Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lomond 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 Lomond Lake?
- Lomond Lake typically sits around 57°F at the surface in September, from 443 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
How deep is Lomond Lake?
- Lomond Lake has a maximum depth of 45 feet. The lake covers 94.61 acres.
What fish are in Lomond Lake?
- Fish species found in Lomond Lake include black crappie, bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, yellow bullhead, yellow perch. Lomond Lake is located in Clearwater County, Minnesota.
What did the DNR fisheries survey find at Lomond Lake?
- Minnesota DNR's Targeted Survey on August 22, 2023 caught 17.83 largemouth bass per hour of electrofishing at Lomond Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lomond 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 Lomond Lake thaw?
- Lomond Lake typically has ice-out around Apr 14.
Are there boat ramps on Lomond Lake?
- Lomond Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Lamond. Public access is listed as yes.
Can I fish at Lomond Lake?
- Lomond 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 Lomond Lake across LakeQuality
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Where this data comes from
87 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
MNPCA87 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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
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