Rivermatics

4 USGS Streamgages · Columbia River system

Crab Creek flows and levels

Crab Creek is gauged at 4 USGS streamgages in Washington, each tracked by Rivermatics. It feeds the Lower Crab Creek. It drains into the Columbia River system. Drainage area at the gauges ranges from 1,042 square miles at Crab Creek at Irby, WA up to 4,840 at Crab Creek near Beverly, WA. The gauged reach falls about 893 feet, from 1,401 feet down to 509. Rivermatics issues a daily machine-learned 14-day flow outlook for every one of them.

Gauges on this river, upstream to downstream

Ordered by drainage area, which is how far down the river each gauge sits. April and July figures are long-term median daily flows for that month from the USGS record — historical normals, not a forecast and not today's reading.

USGS streamgages on this river, ordered upstream to downstream
Gauge State Drainage sq mi Elevation ft April p50 cfs July p50 cfs Forecast
Crab Creek at Irby, WA WA 1,042 1,401 75.4 15.8 14-day
Crab Creek near Stratford, WA WA 1,818 1,267 0 0 14-day
Crab Creek near Moses Lake, WA WA 2,228 1,076 26.1 54.3 14-day
Crab Creek near Beverly, WA WA 4,840 509 216.8 160.9 14-day

Typical flow by month at Crab Creek near Beverly, WA

The furthest-downstream gauge on this river, so the fullest flow it carries here. Long-term daily discharge percentiles from the USGS record (up to 68 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 119.5 174.9 249.3
February 110.9 174.4 259.1
March 82.5 160.8 224.8
April 86.6 216.8 280.2
May 91.3 196 266.5
June 86.3 176.5 263
July 71.9 160.9 252.9
August 91.1 207.6 288.7
September 111 269.6 336.9
October 129.4 288.8 341.4
November 124.3 197.4 251.1
December 111.7 179.3 243.7

All values in cubic feet per second (cfs).

Common questions

When does the Crab Creek run highest?
October, on the long-term record at Crab Creek near Beverly, WA — the furthest-downstream gauge Rivermatics tracks on this river. Median daily flow there is about 288.8 cfs that month, against 160.8 cfs in March, the lowest. Upstream gauges peak on their own schedule; the table on this page gives April and July for each.
How many gauges are on the Crab Creek?
Rivermatics tracks 4 USGS streamgages on the Crab Creek, across Washington. Each has its own page with the site's full flow record and monthly normals. The river may carry other gauges that publish neither daily values nor discharge statistics; those are not tracked here.
Is there a flow forecast for the Crab Creek?
Yes, at 4 of the 4 gauges. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on each basin's observed flows, weather and snowpack, and issues a daily 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 each gauge's live screen.
What river system is the Crab Creek part of?
The Crab Creek drains into the Columbia River system — it is a tributary somewhere in that chain, following the flowpath down to its terminal river. Rivermatics builds this from the USGS/geoconnex reference-mainstem network rather than from names.
Can I use Crab Creek 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.

Other rivers in the Columbia River system

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