Rivermatics

USGS Streamgage 12398600

Pend Oreille River at International Boundary

Pend Oreille River at International Boundary is USGS streamgage 12398600 in Washington, monitoring river discharge in hydrologic subbasin 17010216. It sits on the Pend Oreille River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 25,200 square miles. Discharge records at this site go back to 1962. Typical flow runs near 25,780.6 cfs in July and 28,053.3 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Washington
Drainage area
25,200 sq mi
Gauge elevation
1,758 ft
Subbasin (HUC-8)
17010216
Coordinates
48.99881, -117.35358
USGS site number
12398600
Records begin
1962-12-01 (64 years)

14-day flow forecast

Based on observations through for Pend Oreille River at International Boundary. 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
7,192 8,080 9,072
6,960 8,216 10,095
7,041 8,532 11,233
6,887 8,629 12,017
7,026 8,940 13,236
7,066 9,220 14,543
7,015 9,963 18,314
7,501 11,321 21,391
7,710 11,895 21,870
7,923 12,438 21,874
7,986 12,117 21,352
7,911 11,776 20,564
7,937 11,797 22,127
7,910 12,043 23,621

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 64 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 10,465.2 17,283.9 24,335.5
February 10,654.5 17,489.7 27,827.6
March 11,696.5 20,609.7 33,574.2
April 14,038.3 28,053.3 47,056.7
May 24,948.4 45,054.8 78,435.5
June 22,976.7 52,666.7 98,706.7
July 12,271 25,780.6 42,816.1
August 6,950.6 11,492.3 17,987.1
September 8,167 13,625.7 20,353.3
October 16,532.3 22,977.4 27,971
November 13,236.7 20,156.7 28,273.3
December 11,481 17,248.4 24,612.9

All values in cubic feet per second (cfs).

Common questions

When does Pend Oreille River at International Boundary normally run highest?
June, on the long-term record. The median daily flow that month is about 52,666.7 cfs, against 11,492.3 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 Pend Oreille River at International Boundary?
It depends on the month. In January, half of days historically fall near 17,283.9 cfs, with the middle 80% of days between 10,465.2 and 24,335.5 cfs. The month-by-month table on this page gives the full range.
How long has Pend Oreille River at International Boundary been measured?
Discharge records at USGS site 12398600 begin in 1962, about 64 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Pend Oreille River at International Boundary?
The gauge sits at 48.99881, -117.35358, in Washington, in hydrologic subbasin 17010216, at an elevation of about 1,758 feet, draining roughly 25,200 square miles.
Can I use Pend Oreille River at International Boundary 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 Pend Oreille River

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

Other gauges in this subbasin