Ozawindib Lake
Ozawindib Lake in Clearwater County, Minnesota has a water quality grade of A (Excellent). Water clarity: 19 ft visibility. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Maximum depth: 80 ft. Surface area: 159.24 acres.
- Clarity
- 19 ft
- Typical in August
- 54°F
- Max depth
- 80 ft
- Area
- 159 acres
- Type
- Oligotrophic
- Public access
- Yes
- Ice-out
- Apr 20
- Open water
- 225 days
Next lake in Clearwater County
Ozawindib Lake is a 159-acre cold, clear oligotrophic lake in Clearwater County, Minnesota with a maximum depth of 80 feet. Water quality is graded A based on 2 sampling years through 2024. The lake supports 12 documented fish species including black crappie, bluegill, and brown bullhead. Public access is available with 1 public boat landing. Compared to the 36 other monitored lakes in Clearwater County, Ozawindib Lake ranks #20 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-23. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
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)
Crystal clear, you can see 19 ft down. Phosphorus level: 7 µg/L. Chlorophyll-a: 2.8 µg/L. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 19 ft | Not graded |
| Phosphorus | 7 µg/L | Good |
| Chlorophyll-a (Algae) | 2.8 µg/L | Good |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Ozawindib Lake
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Water Temperature
Ozawindib Lake typically sits around 54°F at the surface in August. Summer average is about 56°F. Usually warmest in Sep (about 59°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 81 field readings (2024–2024) via the EPA Water Quality Portal. See the full Ozawindib Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 80 ft |
| Surface Area | 159 acres |
| Shoreline Length | 4.1 mi |
| Littoral Zone | 40% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Ozawindib LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Ozawindib Lake
DNR Fisheries Survey Summary
11 surveys on file from MN DNR Fisheries. Most recent: 2025-08-19 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 17.15 | 0.17 lb |
| Largemouth Bass | 8.72 | 0.92 lb |
| Green Sunfish | 5.75 | 0.23 lb |
| JND | 4.49 | — |
| TPM | 4.32 | — |
| CNM | 4.21 | — |
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
Largemouth Bass
Green Sunfish
From the 2025-08-19 survey
Minnesota DNR Fisheries IBI program staff conducted an assessment of lakeshore habitat on Ozawindib Lake on August 19th, 2025, following the Score the Shore survey protocols. The assessment consisted of 31 survey sites evenly spaced 200 meters around the lake. Assessments were made in three habitat zones: Shoreline…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Ozawindib Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — OzawindibFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Ozawindib (1383)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — OzawindibPublic Water Access Sites · MN DNR LakeFinder
Ice Season
Historical ice data from Minnesota DNR (20 observations).
Estimated open water season: 225 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-26 (2012) | 2013-05-12 (2013) |
| Ice-In | 2019-11-12 (2019) | 2017-12-20 (2017) |
Most recent ice-out: 2025-04-16
County Ranking
Ranked #20 of 37 lakes in Clearwater County
Nearby Lakes in Clearwater County
Frequently asked questions about Ozawindib Lake
What is the water quality grade for Ozawindib Lake?
- Ozawindib Lake in Clearwater County, Minnesota has a water quality grade of A (Excellent). Water clarity: 19 ft visibility. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Maximum depth: 80 ft. Surface area: 159.24 acres.
Is Ozawindib Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Ozawindib Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 2.8 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Ozawindib Lake?
- Ozawindib Lake typically sits around 54°F at the surface in August, from 81 EPA Water Quality Portal field readings (2024–2024). That is a typical value for the month, not a live reading.
How deep is Ozawindib Lake?
- Ozawindib Lake has a maximum depth of 80 feet. The lake covers 159.24 acres.
What fish are in Ozawindib Lake?
- Fish species found in Ozawindib Lake include black crappie, bluegill, brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, white sucker, yellow bullhead, yellow perch. Ozawindib Lake is located in Clearwater County, Minnesota.
When does Ozawindib Lake thaw?
- Ozawindib Lake typically has ice-out around Apr 20. Ice typically forms around Dec 1. The open water season is approximately 225 days.
Are there boat ramps on Ozawindib Lake?
- Ozawindib Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Ozawindib Lake. Public access is listed as yes.
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Where this data comes from
91 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA91 samples · 2024
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate