Lake levels › Washington

Ross Reservoir water level today

Normal for this time of year

1,581.46ft

feet above sea level ·

vs full pool−10.6 ft
vs normal for Oct 10−1.9 ft
24 hours−0.05 ft
7 days−2.7 ft
30 days−13.1 ft
vs a year ago+2.8 ft

Is Ross Reservoir low right now?

Ross Reservoir was at 1,581.46 ft on October 10, 2026, 10.64 ft below its full pool of 1,592.1 ft. That is 1.88 ft below the typical level for October 10, within the normal range. Over the past week the lake has been falling about 0.38 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)Full pool
1,4721,5071,5421,5771,612NovDecJanFebMarAprMayJunJulAugSepOct Full pool 1,592.1

Ross Reservoir on Oct 10 in past years

20251,580.0+1.5
20241,569.1+12.4
20231,565.1+16.4
20221,584.4−2.9
20211,595.1−13.6
20201,591.0−9.5

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Changevs full pool
Oct 101,581.48−0.03−10.6
Oct 91,581.51−0.39−10.6
Oct 81,581.90−0.54−10.2
Oct 71,582.44−0.52−9.7
Oct 61,582.96−0.40−9.1
Oct 51,583.36−0.37−8.7
Oct 41,583.73−0.41−8.4
Oct 31,584.14−0.44−8.0
Oct 21,584.58−0.36−7.5
Oct 11,584.94−0.21−7.2
Sep 301,585.15−0.08−6.9
Sep 291,585.23−0.31−6.9
Sep 281,585.54−0.44−6.6
Sep 271,585.98−0.40−6.1

Daily means of the operator's readings (midnight to midnight, local time).

About Ross Reservoir

Full pool
1,592.1 ft (Top of Conservation)
10-year range
0.0 ft (April 12, 2017) to 1,602.3 ft (July 22, 2022)
Operated by
U.S. Army Corps of Engineers
Data
U.S. Army Corps of Engineers — NWDP district, ROS
Datum
NGVD29

Lakes near Ross Reservoir

Questions

Is Ross Reservoir low right now?

Ross Reservoir was at 1,581.46 ft on October 10, 2026, 10.64 ft below its full pool of 1,592.1 ft. That is 1.88 ft below the typical level for October 10, within the normal range. Over the past week the lake has been falling about 0.38 ft a day.

What is full pool for Ross Reservoir?

Full pool (Top of Conservation) is 1,592.1 ft above sea level, per U.S. Army Corps of Engineers. Levels above it mean the operator is storing flood water; levels below it are normal in late summer and winter drawdowns.

How often is the Ross Reservoir level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Army Corps of Engineers (NWDP district, ROS). Readings are provisional and can be revised.