Valentine Lake
Ramsey County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Valentine Lake. Here is what has been measured.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- 32 ft max depth
- Limited data
Valentine Lake in Ramsey County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.4 ft visibility. Phosphorus: 48.5 µg/L. Chlorophyll-a (algae): 11.5 µg/L.
Valentine Lake is a productive, nutrient-rich eutrophic lake in Ramsey County, Minnesota with an estimated average depth of about 32 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted. Compared to the 43 other monitored lakes in Ramsey County, Valentine Lake ranks #37 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-16. Methodology: how these readings are compared.
If you are planning to stay, you can search lake houses and cabins around Valentine Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
Readings onlyRecreation use not supported
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. Valentine Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), salinity / chlorides. Check local advisories before you swim.
Whether Valentine 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 Valentine Lake
These are the measurements Minnesota PCA publishes for Valentine Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.4 ft. Phosphorus 48.5 µg/L. Chlorophyll-a 11.5 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 48.5µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 11.5µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Valentine Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Valentine Lake typically sits around 51°F at the surface in October. Summer average is about 72°F. Usually warmest in Jul (about 76°F) and coldest in Mar (about 39°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (39°F) to its warmest (76°F).
Typical surface water temperature by month, from 119 field readings (2010–2024) via the EPA Water Quality Portal. See the full Valentine Lake water temperature breakdown →
Lake Details
Max depth
~32 ft est.
Public access
No
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 Valentine Lake.
Lake Size & Watershed
Watershed (drainage) area
3 sq mi
HydroLAKES / HydroSHEDS
Surface area
59 acres
HydroLAKES / HydroSHEDS
Shoreline
1.5 mi
HydroLAKES / HydroSHEDS
Elevation
873 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.
Stays via Stay22
Stays near Valentine Lake
Compare lakeside cabins, hotels, and vacation rentals near Valentine Lake in Ramsey 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Valentine Lake are listed below.
Top-rated places to stay near Valentine 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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Fishing Valentine Lake
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+3.36 µg/L/yr6 years
Chlorophyll-a
Worsening+4.21 µg/L/yr6 years
EPA Impairment Status
Valentine 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: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN62-0071-00 · Official waterbody report
Nearby Lakes in Ramsey County
Frequently asked questions about Valentine Lake
Where is Valentine Lake?
- Valentine Lake is a lake in Ramsey County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Valentine Lake?
- Valentine Lake in Ramsey County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.4 ft visibility. Phosphorus: 48.5 µg/L. Chlorophyll-a (algae): 11.5 µg/L.
Is Valentine Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Valentine Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen), salinity / chlorides. Check local advisories before you swim.
What is the water temperature of Valentine Lake?
- Valentine Lake typically sits around 51°F at the surface in October, from 119 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
How deep is Valentine Lake?
- No published bathymetric survey covers Valentine Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 32 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Can I fish at Valentine Lake?
- Public access to Valentine Lake is listed as no on the lake record, so confirm before you make the trip. 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 Valentine Lake across LakeQuality
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Where this data comes from
57 measurements from 2 monitoring stations, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA57 samples · 2024
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- Analysis of Chlorophyll in Periphyton and Plankton
Monitoring station identifiers (2)
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 size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder