Rivermatics

USGS Streamgage 12097500

Greenwater River at Greenwater, WA

Greenwater River at Greenwater, WA is USGS streamgage 12097500 in Washington, monitoring river discharge in hydrologic subbasin 17110014. It drains a watershed of about 74 square miles. Discharge records at this site go back to 1911. Typical flow runs near 115.5 cfs in July and 254.2 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Washington
Drainage area
74 sq mi
Gauge elevation
1,741 ft
Subbasin (HUC-8)
17110014
Coordinates
47.15344, -121.63565
USGS site number
12097500
Records begin
1911-10-01 (115 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 97 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 79 188.2 498.5
February 84.5 171 430.8
March 94.2 167.6 361.8
April 141.2 254.2 471.7
May 215.5 380.9 687.4
June 136 301.5 610.2
July 68.1 115.5 263.6
August 40 57.8 94.5
September 31.7 44.5 68.4
October 30.9 49.4 131.6
November 43 111.8 391
December 65.1 169.5 501.2

All values in cubic feet per second (cfs).

Other gauges in this subbasin