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LakeQuality

Upper Klamath Lake Howard Bay

Klamath County, OregonView mapDirections

NR
Not rated

Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.

Water temp
No reading
No gauge
Clarity
No reading
No sample
Level
No reading
No gauge
Trend
No reading
Not enough history
  • Limited data

Upper Klamath Lake Howard Bay in Klamath County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar.

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Why Upper Klamath Lake Howard Bay has no grade

We grade a lake only when the monitoring record supports a letter: 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 Upper Klamath Lake Howard Bay, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).

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 Oregon DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.

Upper Klamath Lake Howard Bay is a lake in Klamath County, Oregon.

Source: EPA Water Quality Portal sampling records, Oregon DEQ, last sampled 2022-03-16. Grade methodology: LakeQuality methodology.

Swimming Safety

Not rated

Limited data

The letter is not a swimming clearance. Check local advisories before you swim.

Get alerts for Upper Klamath Lake Howard Bay

Water quality measurements for Upper Klamath Lake Howard Bay

These readings exist but are not enough for an A–F grade — see why.

No clarity data.

MetricValueGrade
Water Clarity (Secchi Depth)No recent samples
PhosphorusNo recent samples
Chlorophyll-a (Algae)No recent samples

Fishing Upper Klamath Lake Howard Bay

Graded lakes near Upper Klamath Lake Howard Bay

Upper Klamath Lake Howard Bay has no grade, but these lakes within a short drive do.

Nearby Lakes in Klamath County

Frequently asked questions about Upper Klamath Lake Howard Bay

Where is Upper Klamath Lake Howard Bay?

Upper Klamath Lake Howard Bay is a lake in Klamath County, Oregon. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).

What is the water quality grade for Upper Klamath Lake Howard Bay?

Upper Klamath Lake Howard Bay in Klamath County, Oregon is not rated for water quality — its monitoring record does not meet the evidence bar.

Is Upper Klamath Lake Howard Bay safe to swim in?

The letter is not a swimming clearance. Check local advisories before you swim.

Where this data comes from

13 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Department of Environmental Quality - State of OregonOREGONDEQ13 samples · 2020–2022

Analytical methods

  • 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
  • 2130 B ~ Nephelometric 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.