Franklin Roosevelt Lake at Grand Coulee Dam water level

Name: Franklin Roosevelt Lake at Grand Coulee Dam water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Reservoir, Franklin Roosevelt Lake, Washington, United States

Directions

Latest reading

Surface elevation

1,286.49ft Steady over the last 24 hours

Measured Sep 30, 2026, 11:00 AM PDT (19 days ago)

This gauge last reported 19 days ago. The value may be out of date; check the agency page before you rely on it.

History

Not enough readings for a chart yet. History builds up with every update.

What this means

The latest lake level at Franklin Roosevelt Lake at Grand Coulee Dam is 1,286.49 ft. That reading is from Sep 30, 2026, 11:00 AM PDT, so the gauge may be offline or reporting late. There is no published reference for this reservoir yet, so we can't say whether that is high or low for the season.

It has barely moved over the past 24 hours.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Key numbers

Highest on record: 1,290.36 ftAugust 6, 1976

Swimming and boating at Franklin Roosevelt Lake at Grand Coulee Dam

Without a published normal range, the trend is the most useful thing here: a steady lake means few changes at the shore.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

No rain in the last 3 days.

18 Sun 63° 40° – Wind 7 mph

19 Mon 65° 46° – Wind 7 mph

20 Tue 69° 44° – Wind 7 mph

21 Wed 68° 44° – Wind 6 mph

22 Thu 68° 44° – Wind 6 mph

23 Fri 59° 38° – Wind 17 mph

24 Sat 56° 35° 0.01 in, 28% Wind 13 mph

Forecast: Open-Meteo

Sunrise 07:22 AM Sunset 06:01 PM Daylight 10 hr, 40 min First quarter 63%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Sanpoil River above Jack Creek at KellerRiver gauge, Sanpoil River	19.4 cfs	Very low	+0.6 cfs	16 mi
Wilson Creek below Corbett Draw near AlmiraRiver gauge, Wilson Creek	0.4 cfs	Normal	±0	20 mi
Banks Lake and Dry FallsReservoir	1,567.89 ft	Normal		28 mi
Omak Creek near OmakRiver gauge, Omak Creek	3.5 cfs	Low	±0	35 mi
Billy Clapp Lake and PintoReservoir	1,333.13 ft	High		37 mi
Lenore Lake near Soap LakeLake, Lenore Lake	1,076.65 ft	Very high	+0.01 ft	39 mi
Okanogan River at MalottRiver gauge, Okanogan River	2.79 ft	Very low	−0.01 ft	40 mi
Loup Loup Creek at MalottRiver gauge, Loup Loup Creek	3.00 ft	Very low	+0.02 ft	40 mi

Questions and answers

Is Franklin Roosevelt Lake at Grand Coulee Dam really 1,286.49 ft deep?

No. 1,286.49 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 Franklin Roosevelt Lake at Grand Coulee Dam today?

On Sep 30, 2026, 11:00 AM PDT, the surface elevation was 1,286.49 ft. Steady over the last 24 hours.

Is Franklin Roosevelt Lake at Grand Coulee Dam rising or falling?

Steady over the last 24 hours.

Is the level of Franklin Roosevelt Lake at Grand Coulee Dam normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

What is the highest water level ever recorded at Franklin Roosevelt Lake at Grand Coulee Dam?

The highest level on record is 1,290.36 ft on August 6, 1976.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:12436000 (Agency page)
Coordinates: 47.95543, -118.98502 (WGS84)
Vertical datum: NGVD29
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Surface elevation	1,286.49 ft	2026-09-30 18:00	Provisional

Download

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How to cite

U.S. Geological Survey: Franklin Roosevelt Lake at Grand Coulee Dam (usgs:12436000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/franklin-roosevelt-lake-at-grand-coulee-dam

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.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer