Outlet of Ogechie Lake on the Rum River
Outlet of Ogechie Lake on the Rum River in Mille Lacs County, Minnesota has a water quality grade of C (Fair). Phosphorus: 25.4 µg/L. Chlorophyll-a (algae): 0.3 µg/L. Maximum depth: 6 ft. Surface area: 409.14 acres.
- Max depth
- 6 ft
- Area
- 409 acres
- Type
- Oligotrophic
- Trend
- → Stable
- Public access
- Yes
Next lake in Mille Lacs County
Outlet of Ogechie Lake on the Rum River is a 409-acre cold, clear oligotrophic lake in Mille Lacs County, Minnesota with a maximum depth of 6 feet. Water quality is graded C based on 3 sampling years through 2024. Phosphorus level is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 8 other monitored lakes in Mille Lacs County, Outlet of Ogechie Lake on the Rum River ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-08. 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.
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
No clarity data. Phosphorus level: 25.4 µg/L. Chlorophyll-a: 0.3 µg/L. Trophic State Index: 35.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 25.4 µg/L | Fair |
| Chlorophyll-a (Algae) | 0.3 µg/L | Good |
| Trophic State Index (TSI) | 35 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Outlet of Ogechie Lake on the Rum River
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 6 ft |
| Surface Area | 409 acres |
| Shoreline Length | 6.2 mi |
| Littoral Zone | 100% |
| Public Access | Yes |
Recreation & Access
- Mille Lacs Kathio State ParkPublic
Fishing Outlet of Ogechie Lake on the Rum River
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 1989-06-15 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Yellow Bass | 27.40 | 0.3 lb |
| Pumpkinseed | 13.81 | 0.2 lb |
| Black Bullhead | 13.03 | 0.34 lb |
| Brown Bullhead | 8.86 | 0.62 lb |
| Yellow Perch | 6.31 | 0.2 lb |
| Common Carp | 5.89 | 8.63 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
From the 1989-06-15 survey
NORTHERN PIKE ARE SMALL AND ABUNDANT, CARP NUMBERS ARE JUST OVER THE MEDIAN FOR TRAPNETS. ALL THREE SPECIES OF BULLHEADS ARE PRESENT WITH THE YELLOW BULLHEAD AT FIFTY-ONE TIMES THE STATE MEDIAN FOR GILLNETS, PUMPKINSEED ARE OVER ABUNDANT AND MOSTLY SMALL. MANY YOUNG OF THE YEAR PUMPKINSEED WERE CAUGHT IN THE NATURAL…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Outlet of Ogechie Lake on the Rum River. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — OgechieFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Ogechie (0340)Aquatic Plant Report · MN DNR LakeFinder
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +6.7 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -0.7 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Outlet of Ogechie Lake on the Rum River is a man-made reservoir impounded by the Ogechie Lake (completed 1952) on the Rum River; gravity-type dam, 10 ft tall and 80 ft long.
- Surface area
- 410 ac
- Normal storage
- 1,275 ac-ft
- Max storage
- 2,550 ac-ft
- Drainage area
- 419 sq mi
- Hazard class
- Low
- Owner
- MNDNR-Parks
Source: USACE National Inventory of Dams, NID ID MN00250 · Operator website · Matched by proximity (0.02 km)
County Ranking
Ranked #9 of 9 lakes in Mille Lacs County
Nearby Lakes With Higher Grades
Outlet of Ogechie Lake on the Rum River holds Grade C. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Mille Lacs County
Frequently asked questions about Outlet of Ogechie Lake on the Rum River
What is the water quality grade for Outlet of Ogechie Lake on the Rum River?
- Outlet of Ogechie Lake on the Rum River in Mille Lacs County, Minnesota has a water quality grade of C (Fair). Phosphorus: 25.4 µg/L. Chlorophyll-a (algae): 0.3 µg/L. Maximum depth: 6 ft. Surface area: 409.14 acres.
Is Outlet of Ogechie Lake on the Rum River safe to swim in?
- Generally safe for swimming, moderate water quality. Outlet of Ogechie Lake on the Rum River has a water quality grade of C (Fair). Algae concentration (chlorophyll-a) is 0.3 µg/L. Always check local health department advisories before swimming.
How deep is Outlet of Ogechie Lake on the Rum River?
- Outlet of Ogechie Lake on the Rum River has a maximum depth of 6 feet. The lake covers 409.14 acres.
Are there boat ramps on Outlet of Ogechie Lake on the Rum River?
- Outlet of Ogechie Lake on the Rum River has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Mille Lacs Kathio State Park. Public access is listed as yes.
Explore Outlet of Ogechie Lake on the Rum River 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 Mille Lacs County
Species activity outlook by water temperature and season
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Low nutrients, clear water, excellent for swimming
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Where this data comes from
19 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Mille Lacs Band of Ojibwe DNR/Environment
MLBO_DNR_WQX19 samples · 2023–2024
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 10200 H ~ Chlorophyll a-b-c Determination
- SM 4500-PJ and NO3-F
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 details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory