Raddison Lake
Raddison Lake in Itasca County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 14.3 ft visibility. Maximum depth: 40 ft. Surface area: 203.56 acres.
- Clarity
- 14.3 ft
- Typical in August
- 65°F
- Max depth
- 40 ft
- Area
- 204 acres
- Trend
- ↑ Improving
- Public access
- Yes
Next lake in Itasca County
Why Raddison Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Raddison Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Raddison Lake is a 204-acre lake in Itasca County, Minnesota with a maximum depth of 40 feet. Overall water quality is improving over recent sampling years. The lake supports 8 documented fish species including black crappie, bluegill, and largemouth bass. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-08-29. Grade methodology: LakeGrade methodology.
Watch Raddison Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Raddison Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 14.3 ft. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.3 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Raddison Lake
Compare lakeside cabins, hotels, and vacation rentals near Raddison Lake in Itasca 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 Raddison Lake
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 →
Water Temperature
Raddison Lake typically sits around 65°F at the surface in August. Summer average is about 62°F. Usually warmest in Aug (about 65°F) and coldest in May (about 50°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 66 field readings (2018–2025) via the EPA Water Quality Portal. See the full Raddison Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 40 ft |
| Surface Area | 204 acres |
| Shoreline Length | 3.8 mi |
| Littoral Zone | 36% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Raddison LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Raddison Lake
DNR Fisheries Survey Summary
4 surveys on file from MN DNR Fisheries. Most recent: 2002-06-17 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 20.13 | 0.17 lb |
| Northern Pike | 4.96 | 2.74 lb |
| Yellow Perch | 4.28 | 0.11 lb |
| Pumpkinseed | 3.98 | 0.18 lb |
| Black Crappie | 3.11 | 0.39 lb |
| Largemouth Bass | 1.31 | 0.48 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
Northern Pike
Yellow Perch
Pumpkinseed
From the 2002-06-17 survey
Radisson Lake is a 197-acre lake in Itasca County within the Big Fork River watershed. Radisson Lake is approximately 10 miles east of Bigfork, MN. The lake has a maximum depth of 40 ft and 73 acres less than 15 ft deep. A public access is located on the south shore. Water clarity was good with a Secchi disk reading…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Raddison Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — RaddisonFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Raddison (0750)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — RaddisonPublic Water Access Sites · MN DNR LakeFinder
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.15 m/yr | 2 |
Graded lakes near Raddison Lake
Raddison Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Itasca County
Frequently asked questions about Raddison Lake
What is the water quality grade for Raddison Lake?
- Raddison Lake in Itasca County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 14.3 ft visibility. Maximum depth: 40 ft. Surface area: 203.56 acres.
Is Raddison Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Raddison Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Raddison Lake?
- Raddison Lake typically sits around 65°F at the surface in August, from 66 EPA Water Quality Portal field readings (2018–2025). That is a typical value for the month, not a live reading.
How deep is Raddison Lake?
- Raddison Lake has a maximum depth of 40 feet. The lake covers 203.56 acres.
What fish are in Raddison Lake?
- Fish species found in Raddison Lake include black crappie, bluegill, largemouth bass, northern pike, pumpkinseed, smallmouth bass, white sucker, yellow perch. Raddison Lake is located in Itasca County, Minnesota.
Are there boat ramps on Raddison Lake?
- Raddison Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Raddison Lake. Public access is listed as yes.
Explore Raddison Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
Fish species and top-graded lakes across Minnesota
Fish species and best lakes in Itasca County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its grade
Lakes in the Mississippi Headwaters, ranked by water quality
Lakes in the Rainy Lake Watershed, ranked by water quality
Minnesota's cleanest and most-polluted lakes, ranked
More Minnesota Lake Rankings
State Parks Near Raddison Lake
Other Lakes in Minnesota
Oligotrophic Lakes in Minnesota
Where this data comes from
11 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA11 samples · 2024–2025
Analytical methods
- Field measurement/observation, generic method
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory