Rivermatics

USGS Streamgage 12419000

Spokane River near Post Falls, ID

Spokane River near Post Falls, ID is USGS streamgage 12419000 in Idaho, 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 3,840 square miles. Discharge records at this site go back to 1913. Typical flow runs near 1,544.4 cfs in July and 13,661.3 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.

View live conditions & forecast →

Gauge details

State
Idaho
Drainage area
3,840 sq mi
Gauge elevation
2,068 ft
Subbasin (HUC-8)
17010305
Coordinates
47.70296, -116.97797
USGS site number
12419000
Records begin
1913-01-01 (113 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Spokane River near Post Falls, ID. 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
786 867 939
750 858 983
722 866 1,184
745 950 1,450
780 1,038 1,603
768 1,033 1,600
733 992 1,532
709 974 1,534
685 969 1,586
670 973 1,627
647 955 1,648
632 943 1,657
629 957 1,696
615 947 1,717

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 114 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 1,543.5 3,722.3 10,339.7
February 1,645.9 5,001.7 12,700
March 2,793.9 7,409 15,074.2
April 6,747.3 13,661.3 22,603.3
May 6,400.6 17,364.5 27,271
June 2,473.7 7,507.3 19,503.3
July 779.1 1,544.4 3,825.8
August 285.4 796.7 1,561.9
September 520.5 1,142.6 1,797.7
October 955.3 1,637.4 2,683.9
November 1,165.7 2,382.3 5,236.7
December 1,314.5 3,588.7 9,665.8

All values in cubic feet per second (cfs).

Common questions

When does Spokane River near Post Falls, ID normally run highest?
May, on the long-term record. The median daily flow that month is about 17,364.5 cfs, against 796.7 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 near Post Falls, ID?
It depends on the month. In January, half of days historically fall near 3,722.3 cfs, with the middle 80% of days between 1,543.5 and 10,339.7 cfs. The month-by-month table on this page gives the full range.
How long has Spokane River near Post Falls, ID been measured?
Discharge records at USGS site 12419000 begin in 1913, about 113 years, covering roughly 9,201 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 near Post Falls, ID?
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 near Post Falls, ID?
The gauge sits at 47.70296, -116.97797, in Idaho, in hydrologic subbasin 17010305, at an elevation of about 2,068 feet, draining roughly 3,840 square miles.
Can I use Spokane River near Post Falls, ID 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