Mid-North Lake
Klamath County, OregonView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- #16 of 17 in the county
- Public access
Mid-North Lake in Klamath County, Oregon has a water quality grade of F (Algae-prone). Phosphorus: 180 µg/L. Chlorophyll-a (algae): 81.1 µg/L.
- Type
- Hypereutrophic
- Phosphorus
- 180 µg/L
- Chlorophyll-a
- 81.1 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Stays near Mid-North Lake
Compare lakeside cabins, hotels, and vacation rentals near Mid-North Lake in Klamath County, Oregon — 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 Mid-North Lake are listed below.
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Mid-North Lake is a highly nutrient-loaded hypereutrophic lake in Klamath County, Oregon. Water quality is graded F based on 2 sampling years through 2023. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 16 other monitored lakes in Klamath County, Mid-North Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled 2023-09-25. Grade methodology: LakeQuality methodology.
What Mid-North Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Camping1 public campground nearby
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.
The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus 180 µg/L. Chlorophyll-a 81.1 µg/L. TSI 76. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 180 µg/L | Poor |
| Chlorophyll-a (Algae) | 81.1 µg/L | Poor |
| Trophic State Index (TSI) | 76 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Recreation & Access
- Odessa CampgroundPublic
- Rocky PointPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Mid-North Lake
- Odessa Campground4.1 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Fishing Mid-North Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -8 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -6.83 µg/L/yr | 4 |
County Ranking
Ranked #16 of 17 lakes in Klamath County
Nearby Lakes in Klamath County
Frequently asked questions about Mid-North Lake
Where is Mid-North Lake?
- Mid-North Lake is a lake in Klamath County, Oregon. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Mid-North Lake?
- Mid-North Lake in Klamath County, Oregon has a water quality grade of F (Algae-prone). Phosphorus: 180 µg/L. Chlorophyll-a (algae): 81.1 µg/L.
Is Mid-North Lake safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Mid-North Lake?
- Mid-North Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Odessa Campground, Rocky Point. Public access is listed as yes.
Are there campgrounds on Mid-North Lake?
- Mid-North Lake has 1 public campground from USGS The National Map within 5 km, including Odessa Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Mid-North Lake across LakeQuality
2.6 mi away · recorded at 95°F
Species activity outlook by water temperature and season
Where to stay at Oregon's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
Oregon's cleanest and most-polluted lakes, ranked
More Oregon Lake Rankings
Other Grade F Lakes in Oregon
Hypereutrophic Lakes in Oregon
Where this data comes from
81 measurements from 1 monitoring station, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Oregon Water Science Center
USGS-OR81 samples · 2020–2023
Analytical methods
- Nutrients, wu, WCA,persulfate,CF
- Chlorophyll a, phytoplankton
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
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles