Long Meadow Lake
Hennepin County, Minnesota530 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Long Meadow Lake. Here is what has been measured.
- 92 ft max depth
- Public access
- Limited data
Long Meadow Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 1.6 ft visibility. Surface area: 530 acres.
Long Meadow Lake is a 530-acre lake in Hennepin County, Minnesota with an estimated average depth of about 92 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-09-06. Methodology: how these readings are compared.
Long Meadow Lake covers about 530 acres in Hennepin County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Long Meadow Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Long Meadow Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Long Meadow 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 Long Meadow Lake
These are the measurements Minnesota PCA publishes for Long Meadow 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 1.6 ft of visibility. TSI 70.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 70 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Long Meadow Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~92 ft est.
Surface area
530 acres
Public access
Yes
Listed by Minnesota PCA
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Minnesota has not published bathymetry for Long Meadow Lake.
Lake Size & Watershed
Watershed (drainage) area
16,904 sq mi
HydroLAKES / HydroSHEDS
Shoreline
12 mi
HydroLAKES / HydroSHEDS
Elevation
679 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Cedar Avenue (Highway 77 Bridge)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Long Meadow Lake
Compare lakeside cabins, hotels, and vacation rentals near Long Meadow Lake in Hennepin 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 Long Meadow Lake
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Fishing Long Meadow Lake
Reservoir Info (USACE NID)
Long Meadow Lake is a man-made reservoir impounded by the Black Dog Lake (completed 1953), built primarily for water supply on the Minnesota River-TR; gravity-type dam, 25 ft tall and 120 ft long.
- Surface area
- 530 ac
- Normal storage
- 1,618 ac-ft
- Max storage
- 3,550 ac-ft
- Drainage area
- 3 sq mi
- Hazard class
- Low
- Owner
- Xcel Energy
Source: USACE National Inventory of Dams, NID ID MN00349 · Operator website · Matched by proximity (0.83 km)
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Long Meadow Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Xcel - Black Dog Generating PlantBurnsville · 1.4 mi away · NPDES MN0000876MajorRecent violation
- Skywater Technology FoundryBloomington · 1.2 mi away · NPDES MN0056723Recent violation
- Ford Motor Co. - Twin CitiesSaint Paul · 1.2 mi away · NPDES MN0002178
- Polar Semiconductor LlcBloomington · 1.7 mi away · NPDES MN0064661
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 Hennepin County
Frequently asked questions about Long Meadow Lake
Where is Long Meadow Lake?
- Long Meadow Lake is a lake in Hennepin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Long Meadow Lake?
- Long Meadow Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 1.6 ft visibility. Surface area: 530 acres.
Is Long Meadow Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Long Meadow Lake?
- No published bathymetric survey covers Long Meadow Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 92 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 530 acres.
Are there boat ramps on Long Meadow Lake?
- Long Meadow Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Cedar Avenue (Highway 77 Bridge). Public access is listed as yes.
Can I fish at Long Meadow Lake?
- Long Meadow 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 Long Meadow Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA3 samples · 2023
Analytical methods
- Field measurement/observation, generic method
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
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