Yale Reservoir Water Level
Washington · updated daily from the U.S. Geological Survey
473.40 ft
Yale Reservoir is low for this time of year and falling (-0.60 ft in the last 7 days).
Change since yesterday: -0.60 ft
Reading as of 2026-08-14 · higher than 14% of August readings on record
Where Yale Reservoir sits historically
Today's level compared with every reading in our 5.0-year record for this lake.
Since yesterday
-0.60 ft
7-day change
-0.60 ft
30-day change
-5.60 ft
1-year change
+0.40 ft
Last 30 days
Last 12 months
Full history (5.0 years)
Yale Reservoir records and averages
| Current level | 473.40 ft |
|---|---|
| Record high | 480.0 ft (2021-08-26) |
| Record low | 463.0 ft (2023-12-03) |
| Average of all readings | 476.36 ft |
| Data span | 5.0 years (1,818 readings) |
Frequently asked questions
Is Yale Reservoir full right now?
As of 2026-08-14, Yale Reservoir sits at 473.40 ft, which is low for this time of year.Over the past 30 days the level has fallen 5.60 ft.
What is the water level at Yale Reservoir today?
The most recent reading is 473.40 ft (2026-08-14), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Yale Reservoir has ever been?
The highest level in our records is 480.0 ft on 2021-08-26. The lowest is 463.0 ft on 2023-12-03. Our record covers about 5.0 years of readings.
Is Yale Reservoir low for this time of year?
Compared with every August in our records, the current level is higher than 14% of them — low for this time of year. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Yale Reservoir low right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Yale Reservoir has fallen 5.60 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Yale Reservoir changed over the past year?
The level is +0.40 ft compared with this date last year (473.40 ft today). The full-history chart above covers 5.0 years, with a record high of 480.0 ft and a record low of 463.0 ft.
Nearby lakes in Washington
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All Washington lake levels.