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Rimrock Lake and Tieton water level

Reservoir, Washington, United States

Directions

Right now

Normal for mid-October

Surface elevation

2,849.86ft Down 6.75 ft over the last 7 days

Water stored
54,438 acre‑ft
2,825 2,850 2,875

History

History
2,8202,8402,860ftOct 12Oct 13Oct 14Oct 15Oct 162,8202,8402,860ftOct 12Oct 14Oct 16
2,8252,8502,8752,900ftSep 19Sep 25Oct 2Oct 9Oct 162,8252,8502,8752,900ftSep 19Oct 2Oct 16
2,8502,900ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20262,8502,900ftOct 2025Apr 2026Oct 2026
2,7002,8002,900ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20262,7002,8002,900ftOct 2016Oct 2021Oct 2026
2,7002,8002,900ftJanMarMayJulSepNov20262,7002,8002,900ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

The lake level at Rimrock Lake and Tieton reads 2,849.86 ft, about where it usually sits at this time of year.

The median for mid-October is 2,848.93 ft, based on 36 years of readings, so the lake level is 0.93 ft above typical. On the same day last year the reading was 2,816.25 ft, a difference of +33.61 ft.

It is still going down, by 6.75 ft over the past week. The 30-day range is 2,849.86 ft – 2,884.44 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

Compared with 36 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
2,848.93 ft0.93 ft above the median for this date
Normal for this date
2,813.66 ft – 2,869.31 ft8 years in 10 fall in this range (36 years of records)
Same day last year
2,816.25 ft+33.61 ft
Lowest and highest in 30 days
2,849.86 ft – 2,884.44 ft
Lowest and highest in 12 months
2,817.02 ft – 2,925.09 ft

Boating and fishing at Rimrock Lake and Tieton

A lake in its usual range is what most ramps, docks and swimming areas are built for.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:27 AM Sunset 06:14 PM Daylight 10 hr, 47 min First quarter 53%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Bumping Lake and Bumping LakeLake 3,398.20 ft Low 17 mi
American River near NileRiver gauge, American River 71.84 ft Very low ±0 22 mi
Cowlitz River at PackwoodRiver gauge, Cowlitz River 0.81 ft Very low −0.04 ft 26 mi
Klickitat River above West Fork near GlenwoodRiver gauge, Klickitat River 1.03 ft Normal −0.01 ft 28 mi
Toppenish Creek near Fort SimcoeRiver gauge, Toppenish Creek 14.3 cfs Low ±0 29 mi
Ahtanum Creek at Union GapRiver gauge, Ahtanum Creek 2.71 ft Very low −0.01 ft 32 mi
Yakima River above Ahtanum Creek at Union GapRiver gauge, Yakima River 40.26 ft Very high −0.03 ft 33 mi
Yakima River at UmtanumRiver gauge, Yakima River 30.73 ft Low −0.06 ft 34 mi

Questions and answers

Is Rimrock Lake and Tieton higher than last year?

Yes, it is 33.61 ft higher than on the same day last year, when the reading was 2,816.25 ft.

What is a normal level for Rimrock Lake and Tieton in mid-October?

The median for mid-October is 2,848.93 ft. In 8 years out of 10 the reading falls between 2,813.66 ft and 2,869.31 ft, based on 36 years of records.

Is Rimrock Lake and Tieton really 2,849.86 ft deep?

No. 2,849.86 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Rimrock Lake and Tieton today?

On Oct 16, 2026, the surface elevation was 2,849.86 ft. Down 6.75 ft over the last 7 days.

Is Rimrock Lake and Tieton rising or falling?

Down 6.75 ft over the last 7 days.

Is the level of Rimrock Lake and Tieton normal?

Normal for mid-October. Compared with 36 years of daily readings for this time of year.

How often is this data updated?

The U.S. Bureau of Reclamation publishes a new reading once a day. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Bureau of Reclamation
Station code
usbr:7196 (Agency page)
Coordinates
46.65660, -121.12893 (WGS84)
Update interval
once a day
Licence
Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 2,849.86 ft 2026-10-16 07:00 Provisional
Water stored 54,438 acre‑ft 2026-10-16 07:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Rimrock Lake and Tieton (usbr:7196). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/rimrock-lake-and-tieton

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.