Lomond Lake
Lomond Lake in Clearwater County, Minnesota has a water quality grade of A (Excellent). 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.
- Clarity
- 10.1 ft
- Typical in August
- 59°F
- Max depth
- 45 ft
- Area
- 95 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
- Public access
- Yes
- Ice-out
- Apr 14
Next lake in Clearwater County
Lomond Lake is a 95-acre mesotrophic lake in Clearwater County, Minnesota with a maximum depth of 45 feet. Water quality is graded A based on 2 sampling years through 2025. 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. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A (Excellent)
Good clarity, visible to about 10.1 ft. Phosphorus level: 20.5 µg/L. Chlorophyll-a: 5.1 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.1 ft | Not graded |
| Phosphorus | 20.5 µg/L | Good |
| Chlorophyll-a (Algae) | 5.1 µg/L | Good |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay 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.
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Water Temperature
Lomond Lake typically sits around 59°F at the surface in August. 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.
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 →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 45 ft |
| Surface Area | 95 acres |
| Shoreline Length | 2.2 mi |
| Littoral Zone | 47% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lake LamondPublic
Fish Species
Click a species to see every graded 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.
DNR Fisheries Survey Summary
6 surveys on file from MN DNR Fisheries. Most recent: 2023-08-22 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 36.35 | 0.26 lb |
| CNM | 17.79 | — |
| Yellow Perch | 11.99 | 0.12 lb |
| Northern Pike | 4.59 | 1.96 lb |
| JND | 3.23 | — |
| Yellow Bass | 2.50 | 0.72 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
Yellow Perch
Northern Pike
Yellow Bass
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
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.069 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.97 µg/L/yr | 6 |
| Chlorophyll-a | ↑ Improving | -0.18 µg/L/yr | 6 |
Ice Season
Historical ice data from Minnesota DNR (8 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2016-04-01 (2016) | 2014-04-27 (2014) |
| Ice-In | 2019-11-08 (2019) | 2019-11-08 (2019) |
Most recent ice-out: 2019-04-24
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
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.
County Ranking
Ranked #14 of 37 lakes in Clearwater County
Nearby Lakes in Clearwater County
Frequently asked questions about Lomond Lake
What is the water quality grade for Lomond Lake?
- Lomond Lake in Clearwater County, Minnesota has a water quality grade of A (Excellent). 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?
- Excellent for swimming, crystal clear water with minimal algae. Lomond Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 5.1 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Lomond Lake?
- Lomond Lake typically sits around 59°F at the surface in August, 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.
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.
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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)
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
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