Shoalwater Bay Lake is a highly nutrient-loaded hypereutrophic lake in Klamath County, Oregon. Water quality is graded F based on 2 sampling years through 2023. Compared to the 19 other monitored lakes in Klamath County, Shoalwater Bay Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Oregon DNR, last sampled 2023-09-25. Grade methodology: LakeGrade methodology.
Watch Shoalwater Bay Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 220 µg/L. Chlorophyll-a: 147 µg/L. Trophic State Index: 81.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 220 µg/L | F |
| Chlorophyll-a (Algae) | 147 µg/L | F |
| Trophic State Index (TSI) | 81 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Shoalwater Bay Lake
Compare lakeside cabins, hotels, and vacation rentals near Shoalwater Bay 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.
Top-rated places to stay near Shoalwater Bay 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 trip to Shoalwater Bay Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Shoalwater Bay Lake — straight to your inbox. No spam, unsubscribe anytime.
Fishing Shoalwater Bay Lake
Location
County Ranking
Ranked #16 of 20 lakes in Klamath County
Nearby Lakes in Klamath County
Explore Shoalwater Bay Lake across LakeGrade
More Oregon Lake Rankings
Other Grade F Lakes in Oregon
Hypereutrophic Lakes in Oregon
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-25
Monitoring stations: 1