Rivermatics

USGS Streamgage 12117600

Cedar River below Diversion near Landsburg, WA

Cedar River below Diversion near Landsburg, WA is USGS streamgage 12117600 in Washington, monitoring river discharge in hydrologic subbasin 17110012. It sits on the Cedar River, alongside 6 other gauges Rivermatics tracks on the same river. It drains a watershed of about 134 square miles. Discharge records at this site go back to 1991. Typical flow runs near 208 cfs in July and 469.9 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, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Washington
Drainage area
134 sq mi
Gauge elevation
507 ft
Subbasin (HUC-8)
17110012
Coordinates
47.37955, -121.98345
USGS site number
12117600
Records begin
1991-12-12 (35 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Cedar River below Diversion near Landsburg, 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
88.7 91.9 95.3
95.7 111 169
92.7 107 171
93.3 106 160
92.6 107 171
90.8 104 175
88.3 101 187
88.2 100 176
88.3 101 178
88.8 102 191
88.9 105 209
89.9 118 260
96.2 147 329
100 154 315

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 34 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 324.7 792.3 1,800
February 324.6 664.3 1,615.9
March 299.7 531 1,448.7
April 285.7 469.9 1,381
May 271.6 480.5 1,213
June 244.3 346.7 1,029.8
July 146.7 208 363.5
August 91.7 120.5 186.3
September 126.6 162.3 242.4
October 264.9 330.4 544.1
November 321.2 567.3 1,325.5
December 335.5 675 1,491.3

All values in cubic feet per second (cfs).

Common questions

When does Cedar River below Diversion near Landsburg, WA normally run highest?
January, on the long-term record. The median daily flow that month is about 792.3 cfs, against 120.5 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 Cedar River below Diversion near Landsburg, WA?
It depends on the month. In January, half of days historically fall near 792.3 cfs, with the middle 80% of days between 324.7 and 1,800 cfs. The month-by-month table on this page gives the full range.
How long has Cedar River below Diversion near Landsburg, WA been measured?
Discharge records at USGS site 12117600 begin in 1991, about 35 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 Cedar River below Diversion near Landsburg, 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. A companion model forecasts each day's water-temperature high and low. 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 Cedar River below Diversion near Landsburg, WA?
The gauge sits at 47.37955, -121.98345, in Washington, in hydrologic subbasin 17110012, at an elevation of about 507 feet, draining roughly 134 square miles.
Can I use Cedar River below Diversion near Landsburg, 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 Cedar River

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

Other gauges in this subbasin