Rivermatics

USGS Streamgage 12422500

Spokane River at Spokane, WA

Spokane River at Spokane, WA is USGS streamgage 12422500 in Washington, monitoring river discharge in hydrologic subbasin 17010305. It sits on the Spokane River, alongside 5 other gauges Rivermatics tracks on the same river. It drains a watershed of about 4,290 square miles. Discharge records at this site go back to 1891. Typical flow runs near 2,473.9 cfs in July and 13,387.7 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

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Gauge details

State
Washington
Drainage area
4,290 sq mi
Gauge elevation
1,723 ft
Subbasin (HUC-8)
17010305
Coordinates
47.65934, -117.4491
USGS site number
12422500
Records begin
1891-04-01 (135 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Spokane River at Spokane, WA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
798 855 937
763 837 974
784 892 1,187
820 995 1,531
822 1,025 1,627
813 1,009 1,598
786 965 1,516
759 927 1,463
735 895 1,420
720 875 1,399
709 858 1,342
700 849 1,353
690 842 1,380
684 837 1,389

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 135 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 2,049.7 4,124.2 10,095.8
February 2,121.4 5,236.9 11,801.7
March 3,160.6 7,503.2 14,712.9
April 7,223 13,387.7 22,123.3
May 7,130 17,412.9 27,371
June 3,295.7 8,899.3 20,590
July 1,366 2,473.9 6,272.3
August 795.8 1,522.9 2,589.7
September 1,043.4 1,635.7 2,296.3
October 1,409.7 2,030 2,949.7
November 1,678 2,734 5,460.3
December 1,873.2 3,880 9,573.2

All values in cubic feet per second (cfs).

Common questions

When does Spokane River at Spokane, WA normally run highest?
May, on the long-term record. The median daily flow that month is about 17,412.9 cfs, against 1,522.9 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Spokane River at Spokane, WA?
It depends on the month. In January, half of days historically fall near 4,124.2 cfs, with the middle 80% of days between 2,049.7 and 10,095.8 cfs. The month-by-month table on this page gives the full range.
How long has Spokane River at Spokane, WA been measured?
Discharge records at USGS site 12422500 begin in 1891, about 135 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Spokane River at Spokane, WA?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Spokane River at Spokane, WA?
The gauge sits at 47.65934, -117.4491, in Washington, in hydrologic subbasin 17010305, at an elevation of about 1,723 feet, draining roughly 4,290 square miles.
Can I use Spokane River at Spokane, WA data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Spokane River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Spokane River in full.

Other gauges in this subbasin