Lac Lavon Lake
Lac Lavon Lake in Dakota County, Minnesota has a water quality grade of A (Excellent). Water clarity: 12.1 ft visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Maximum depth: 32 ft. Surface area: 65.89 acres.
- Clarity
- 12.1 ft
- Typical in August
- 70°F
- Max depth
- 32 ft
- Area
- 66 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
- Public access
- Yes
- Ice-out
- Apr 10
Next lake in Dakota County
Lac Lavon Lake is a 66-acre mesotrophic lake in Dakota County, Minnesota with a maximum depth of 32 feet. Water quality is graded A based on 2 sampling years through 2024. Overall water quality is improving over recent sampling years. The lake supports 9 documented fish species including black bullhead, black crappie, and bluegill. Public access is available. Compared to the 44 other monitored lakes in Dakota County, Lac Lavon Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-17. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
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 12.1 ft. Phosphorus level: 13 µg/L. Chlorophyll-a: 2.7 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12.1 ft | Not graded |
| Phosphorus | 13 µg/L | Good |
| Chlorophyll-a (Algae) | 2.7 µg/L | Good |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lac Lavon Lake
Compare lakeside cabins, hotels, and vacation rentals near Lac Lavon Lake in Dakota 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
Lac Lavon Lake typically sits around 70°F at the surface in August. Summer average is about 69°F. Usually warmest in Jul (about 71°F) and coldest in Apr (about 43°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 141 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lac Lavon Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 32 ft |
| Surface Area | 66 acres |
| Shoreline Length | 2.1 mi |
| Littoral Zone | 39% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Lac Lavon 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: 2004-07-26 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 40.61 | 0.08 lb |
| Hybrid Sunfish | 3.95 | 0.14 lb |
| Black Crappie | 3.18 | 0.3 lb |
| Northern Pike | 3.15 | 1.72 lb |
| Pumpkinseed | 2.25 | 0.12 lb |
| Walleye | 1.50 | 2.98 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
Hybrid Sunfish
Black Crappie
Northern Pike
From the 2004-07-26 survey
Bluegill are the most abundant species in Lac Lavon Lake. Their numbers are down from previous assessments but are still within the normal range for this type of lake. The average size sampled was only in the 4 inch range. Northern pike were sampled in high abundance. Lengths ranged from 13.5 to 25.63 inches. Black…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lac Lavon Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Lac LavonFisheries Lake Survey · MN DNR LakeFinder
- —Public Water Access Sites — Lac LavonPublic 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 | ↓ Declining | -0.109 m/yr | 6 |
| Phosphorus | ↑ Improving | -8.5 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -9.3 µg/L/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (12 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2025-03-26 (2025) | 2008-04-20 (2008) |
| Ice-In | 2007-12-02 (2007) | 2024-01-15 (2024) |
Most recent ice-out: 2025-03-26
EPA Impairment Status
Lac Lavon 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 MN19-0446-00 · Official waterbody report
County Ranking
Ranked #2 of 45 lakes in Dakota County
Nearby Lakes in Dakota County
Frequently asked questions about Lac Lavon Lake
What is the water quality grade for Lac Lavon Lake?
- Lac Lavon Lake in Dakota County, Minnesota has a water quality grade of A (Excellent). Water clarity: 12.1 ft visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Maximum depth: 32 ft. Surface area: 65.89 acres.
Is Lac Lavon Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Lac Lavon Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 2.7 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Lac Lavon Lake?
- Lac Lavon Lake typically sits around 70°F at the surface in August, from 141 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
How deep is Lac Lavon Lake?
- Lac Lavon Lake has a maximum depth of 32 feet. The lake covers 65.89 acres.
What fish are in Lac Lavon Lake?
- Fish species found in Lac Lavon Lake include black bullhead, black crappie, bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, white sucker. Lac Lavon Lake is located in Dakota County, Minnesota.
When does Lac Lavon Lake thaw?
- Lac Lavon Lake typically has ice-out around Apr 10.
Explore Lac Lavon Lake across LakeGrade
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Where this data comes from
112 measurements from 3 monitoring stations, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA112 samples · 2020–2024
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- Phosphorus by Colorimetry
- Analysis of Chlorophyll in Periphyton and Plankton
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity, Nephelometric Method
Monitoring station identifiers (3)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate