Blooms Lake
Blooms Lake in Chisago County, Minnesota has a water quality grade of A (Excellent). Water clarity: 6.9 ft visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 1.4 µg/L. Maximum depth: 41 ft. Surface area: 48.22 acres.
- Clarity
- 6.9 ft
- Typical in August
- 74°F
- Max depth
- 41 ft
- Area
- 48 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
- Public access
- No
Next lake in Chisago County
Blooms Lake is a 48-acre mesotrophic lake in Chisago County, Minnesota with a maximum depth of 41 feet. Water quality is graded A based on 2 sampling years through 2025. Overall water quality is improving over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted. Compared to the 29 other monitored lakes in Chisago County, Blooms Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-14. 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)
Moderate clarity, visible to about 6.9 ft. Phosphorus level: 16 µg/L. Chlorophyll-a: 1.4 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.9 ft | Not graded |
| Phosphorus | 16 µg/L | Good |
| Chlorophyll-a (Algae) | 1.4 µg/L | Good |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Blooms Lake
Compare lakeside cabins, hotels, and vacation rentals near Blooms Lake in Chisago 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
Blooms Lake typically sits around 74°F at the surface in August. Summer average is about 77°F. Usually warmest in Jun (about 78°F) and coldest in May (about 67°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 38 field readings (2017–2025) via the EPA Water Quality Portal. See the full Blooms Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 41 ft |
| Surface Area | 48 acres |
| Shoreline Length | 1.4 mi |
| Littoral Zone | 64% |
| Public Access | No |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fishing Blooms Lake
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1989-06-14 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 75.50 | 0.21 lb |
| Black Bullhead | 9.38 | 0.32 lb |
| Pumpkinseed | 5.50 | 0.2 lb |
| Black Crappie | 4.88 | 0.15 lb |
| White Sucker | 0.50 | 2.6 lb |
| Hybrid Sunfish | 0.50 | 0.3 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
From the 1989-06-14 survey
A LAKE SURVEY WAS CONDUCTED DURING THE MONTH OF JUNE 1989 ON OGRENS LAKE. TWO GILLNETS AND FOUR TRAPNETS WERE SET IN AN EFFORT TO OBTAIN DATA PERTAINING TO THE PRESENT FISH POPULATION. SHORE- LINE SEINING WAS PERFORMED IN LATE AUGUST TO EVALUATE NATURAL REPRODUCTION OF THE FISH SPECIES PRESENT. WITH RESPECT TO LOCAL…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Blooms Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — OgrensFisheries Lake Survey · MN DNR LakeFinder
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.097 m/yr | 6 |
| Phosphorus | ↑ Improving | -3.13 µg/L/yr | 6 |
| Chlorophyll-a | ↑ Improving | -2.13 µg/L/yr | 6 |
EPA Impairment Status
Blooms 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 MN13-0011-00 · Official waterbody report · Matched by proximity (1.7 km)
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Blooms Lake under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Shafer WwtpShafer · 1.9 mi away · NPDES MN0030848Recent violation
- Wi Dnr Osceola Fish HatcheryOsceola · 4.2 mi away · NPDES WI0004197Recent violation
- Osceola WwtfArcadia · 4.6 mi away · NPDES WI0025020Recent violation
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 #5 of 30 lakes in Chisago County
Nearby Lakes in Chisago County
Frequently asked questions about Blooms Lake
What is the water quality grade for Blooms Lake?
- Blooms Lake in Chisago County, Minnesota has a water quality grade of A (Excellent). Water clarity: 6.9 ft visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 1.4 µg/L. Maximum depth: 41 ft. Surface area: 48.22 acres.
Is Blooms Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Blooms Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 1.4 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Blooms Lake?
- Blooms Lake typically sits around 74°F at the surface in August, from 38 EPA Water Quality Portal field readings (2017–2025). That is a typical value for the month, not a live reading.
How deep is Blooms Lake?
- Blooms Lake has a maximum depth of 41 feet. The lake covers 48.22 acres.
Explore Blooms Lake across LakeGrade
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Where this data comes from
88 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
MNPCA88 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- Phosphorus by Colorimetry
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
- 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