Upper Klamath Lake

Name: Upper Klamath Lake (Oregon) water level
Creator: U.S. Geological Survey

near K.Falls(Weight/Mean Elev), OR · Oregon · USGS gauge

Grey bar: recent range 4,140.6–4,141.0 ft.

Water level · NAVD88

4,140.65FT

Gauge elevation · no % full published

7 days ±0.00 ft30 days −0.37 ftvs last year −0.70 ft

Reading for Oct 25, 2026, 17:45 UTC · page refreshed Oct 25, 21:16 UTC
Source: U.S. Geological Survey (Water Data for the Nation)

Worth going today?Today

Looks good

Light wind, dry

Wind7 to 10 mph

Rain0%

Temp58°F

Level4,140.6 ft

TodayMostly Cloudy · 58°F
S 7 to 10 mph · rain 0%

TonightPartly Cloudy then Chance Light Rain · 36°F
SW 7 to 10 mph · rain 49%

NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Level history

Last 30 days of daily means.

Field notes

On Oct 25, 2026, Upper Klamath Lake was at 4,140.65 (NAVD88) ft.

The level has been roughly steady over the past week (±0.00 ft).

Compared with a year ago (4,141.35 ft, same time of day), the lake is 0.70 ft lower.

Readings come from the USGS gauge “UPPER KLAMATH LAKE NR K.FALLS(WEIGHT/MEAN ELEV) OR”. Gauge elevations are not directly comparable between lakes because each uses its own datum.

Lake facts

Gauge / station	UPPER KLAMATH LAKE NR K.FALLS(WEIGHT/MEAN ELEV) OR
Elevation datum	ft (NAVD88)
Gauge location	42.2498, -121.8164

Nearby lakes

Keno Reservoir10 mi SW83.85 ft−0.13 ft Lost River Reservoir10 mi SE89.77 ft—Fourmile Lake26 mi NW5,726.05 ft+0.01 ft Fish Lake29 mi W4,624.81 ft+0.42 ft Howard Prairie Lake29 mi W4,507.72 ft−0.04 ft

Common questions

Is Upper Klamath Lake rising or falling?

Over the last 7 days it changed ±0.00 ft and over 30 days −0.37 ft.

How full is Upper Klamath Lake?

USGS publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from USGS's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Geological Survey's Water Data API (api.waterdata.usgs.gov), which publishes readings from USGS and partner gauges. Forecasts come from the National Weather Service.

Latest instantaneous reading; 7-day, 30-day and year-ago changes compare readings at the same hour. USGS data are provisional and subject to revision. This page is not affiliated with or endorsed by the USGS. See data sources.