Water Year 2026 — Upper Klamath Lake— Keno outflow— Klamath Falls— updating…

Current conditions across the Project

The basin as it stands today.

The lake, the river at Keno, the snow and rain behind them, and the conditions the listed species are meeting. Readings come straight from the federal monitors and refresh each time the page loads.

For the water year and irrigation season, see the Water Year and Irrigation Season Tracker. For the long record, see Water Management: A Historical Perspective.

01 · Right now

Live conditions across the Project

Read straight from the federal monitors, refreshed each time this page loads. Every tile opens its official source.

02 · Where it comes from

The supply, and the lake it sits in

The year’s water arrives as mountain snow, melts into Upper Klamath Lake, and is drawn down through the season. The lake is also the home water of the c’waam and koptu — so how full it runs is both a supply question and a habitat one.

Upper Klamath Lake elevation
Daily lake level · Reclamation datum · past 12 months · USGS 11507000
Full chart ↗
Loading live data from USGS…
Stored water in Upper Klamath Lake at the start of Water Year 2027
Stored water content on September 30, 2026, the last day of Water Year 2026, at a lake level of 4,138.93 ft
219,838AF
Open-water evaporation off the lake
AgriMet Agency Lake (AGKO) · last recorded Aug 18, 2026 · current reading at AgriMet ↗
0.25in/day
Basin snowpack · water-year to date
Open full snow plot at NRCS ↗
Basin precipitation · water-year to date
Open full precipitation plot at NRCS ↗
03 · The listed species

The fish, in the water they live in

Two protected species, two different waters. Salmon are an introduced presence downriver, meeting the conditions the Project passes at Keno; the c’waam and koptu live in the lake above, adapted to summers that would harm salmon. The colour flags rate each live reading against standard salmon thresholds — they apply to salmon only.

Upper Klamath Lake vs Keno · live water quality
the water entering the Project vs leaving it
Water temperature
Upper Klamath Lake— °F
At Keno— °F
Dissolved oxygen
Upper Klamath Lake— mg/L
At Keno— mg/L
pH
Upper Klamath Lake—
At Keno—
Un-ionized ammoniac’waam & koptu · not live
UKL documented peak~300 µg/L
Suckers’ lethal530–780 µg/L
Salmon suitabilitysuitablemarginalharmfulthe ammonia row is a separate sucker measure
Keno conditions over the year, for salmon
daily max temperature & daily min oxygen · past 12 months · USGS 11509500
Loading live data from USGS…
Loading live data from USGS…
Salmon conditionsuitablemarginalharmfulbars show the condition of the water, not the presence of fish
Days Keno crossed each salmon threshold
past 12 months · live from USGS 11509500
Water temperature
Rearing & growth stressdaily max above ~64°F— days
Adult migration impairedabove ~70°F · migration season— days
Lethaldaily max near 77°F— days
Dissolved oxygen
Stress & avoidancedaily min below ~6 mg/L— days
Serious harmdaily min below ~5 mg/L— days
Lethaldaily min near 3.3 mg/L— days
05 · The backdrop

The year’s drought & wildfire

The conditions the whole basin is managing against. The Drought Monitor updates each Thursday; the Windy map is live.

Reading the routing chart

The dashed line is the maximum available over the Keno reef without the Project — this year’s measured inflow routed through the two natural lakes and over their rock reefs, by the same model used for the historical record. The method, its parameters, and what it does and does not include are set out on the Water page.

Reading the shading
Winter and spring — the Project holds back water that river would have carried away in a pulse.
Late season — the Project puts water into the river the natural lakes would have evaporated. Part 2 puts that mid-summer loss above 700 cfs.
The projected band

Right of the divider, projected to 30 September: net inflow held at its recent average, evaporation tapering into autumn, and Keno held at the 750 cfs and 790 cfs figures used in this year’s operating projection, with a 7,000 acre-foot ceremonial release.

What this model assumes. The reconstruction has to start the two natural lakes somewhere on 1 October. Reclamation’s own gage sheets settle the upper lake: it stood at 4,140.30 ft entering the wet year of 1916–17 and 4,140.25 ft entering the dry year of 1917–18 — the reef holds the autumn level near 4,140.25 whatever the preceding year was like. The lower lake is less well constrained. Starting levels set how much carried-over storage is available to release, and the annual totals are sensitive to them, so the cumulative comparison of actual against without-Project is not published here.

The record Sixty-six years at Keno without the Project — the reconstruction every figure on this page is measured against See the record →
06 · Go to the source

Every reading, at its official monitor

Live conditions read from USGS and Open-Meteo. Supply, accountability, and without-Project figures from K.I.D.’s daily tracking file. Draft — under District and legal review.