Bennett Lake
Bennett Lake in Ramsey County, Minnesota has a water quality grade of D (Nutrient-rich). Water clarity: 4.9 ft visibility. Phosphorus: 106 µg/L. Chlorophyll-a (algae): 20 µg/L. Maximum depth: 9 ft. Surface area: 29.04 acres.
- Clarity
- 4.9 ft
- Typical in August
- 74°F
- Max depth
- 9 ft
- Area
- 29 acres
- Type
- Eutrophic
- Trend
- ↓ Declining
- Public access
- No
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Bennett Lake →
Next lake in Ramsey County
Bennett Lake is a 29-acre productive, nutrient-rich eutrophic lake in Ramsey County, Minnesota with a maximum depth of 9 feet. Water quality is graded D based on 2 sampling years through 2025. Overall water quality is declining over recent sampling years. The lake supports 8 documented fish species including black bullhead, black crappie, and bluegill. No public access — the lake is private or restricted. Compared to the 43 other monitored lakes in Ramsey County, Bennett Lake ranks #20 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-16. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyAlgae risk
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 4.9 ft. Phosphorus level: 106 µg/L. Chlorophyll-a: 20 µg/L. Trophic State Index: 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | Not graded |
| Phosphorus | 106 µg/L | Poor |
| Chlorophyll-a (Algae) | 20 µg/L | Poor |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Bennett Lake
Compare lakeside cabins, hotels, and vacation rentals near Bennett 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 grade measures nutrients and algae, not lodging — cabins and rentals around Bennett Lake are listed below.
Top-rated places to stay near Bennett Lake
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Planning a whole trip? See where to stay at Minnesota’s top lakes →
Water Temperature
Bennett Lake typically sits around 74°F at the surface in August. Summer average is about 73°F. Usually warmest in Jul (about 74°F) and coldest in Jan (about 38°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 256 field readings (2010–2025) via the EPA Water Quality Portal. See the full Bennett Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 9 ft |
| Surface Area | 29 acres |
| Shoreline Length | 1 mi |
| Littoral Zone | 98% |
| Public Access | No |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Bennett Lake
DNR Fisheries Survey Summary
8 surveys on file from MN DNR Fisheries. Most recent: 2016-06-06 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 103.39 | 0.1 lb |
| Black Bullhead | 53.21 | 0.39 lb |
| Yellow Perch | 20.00 | 0.08 lb |
| Black Crappie | 15.83 | 0.13 lb |
| Northern Pike | 5.67 | 3.14 lb |
| GOS | 5.16 | 0.11 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
Black Bullhead
Yellow Perch
Black Crappie
From the 2016-06-06 survey
Bennett Lake is a popular local fishing resource in Central Park, City of Roseville. The lake is 23 acres in size and has a maximum depth of nine feet. An aeration system located on the east shore prevents winterkill and a fishing pier is located on the west shore. Additionally, there are many points around the lake…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Bennett Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — BennettFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — BennettFish Stocking History · MN DNR LakeFinder
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.023 m/yr | 6 |
| Phosphorus | ↓ Declining | +6.17 µg/L/yr | 6 |
| Chlorophyll-a | ↓ Declining | +2.81 µg/L/yr | 6 |
EPA Impairment Status
Bennett 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 MN62-0048-00 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Bennett Lake under Clean Water Act (NPDES) discharge permits.
- Kplop Roseville TerminalRoseville · 0.5 mi away · NPDES MN0050318
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 #20 of 44 lakes in Ramsey County
Nearby Lakes With Higher Grades
Bennett Lake holds Grade D. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Ramsey County
Frequently asked questions about Bennett Lake
What is the water quality grade for Bennett Lake?
- Bennett Lake in Ramsey County, Minnesota has a water quality grade of D (Nutrient-rich). Water clarity: 4.9 ft visibility. Phosphorus: 106 µg/L. Chlorophyll-a (algae): 20 µg/L. Maximum depth: 9 ft. Surface area: 29.04 acres.
Is Bennett Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Bennett Lake has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 20 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Bennett Lake?
- Bennett Lake typically sits around 74°F at the surface in August, from 256 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
How deep is Bennett Lake?
- Bennett Lake has a maximum depth of 9 feet. The lake covers 29.04 acres.
What fish are in Bennett Lake?
- Fish species found in Bennett Lake include black bullhead, black crappie, bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed. Bennett Lake is located in Ramsey County, Minnesota.
Explore Bennett Lake across LakeGrade
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High nutrients, frequent algae, reduced clarity
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Where this data comes from
371 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
MNPCA371 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity, Nephelometric Method
- 2130 B ~ Nephelometric Method
- Turbidity by Nephelometry
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 details from Minnesota DNR LakeFinder