Rivermatics

USGS Streamgage 09394500

Little Colorado River at Woodruff, AZ

Little Colorado River at Woodruff, AZ is USGS streamgage 09394500 in Arizona, monitoring river discharge in hydrologic subbasin 15020002. It sits on the Little Colorado River, alongside 8 other gauges Rivermatics tracks on the same river. It drains a watershed of about 8,072 square miles. Discharge records at this site go back to 1905. Typical flow runs near 7.3 cfs in July and 3.9 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Arizona
Drainage area
8,072 sq mi
Gauge elevation
5,132 ft
Subbasin (HUC-8)
15020002
Coordinates
34.7825, -110.04396
USGS site number
09394500
Records begin
1905-03-16 (121 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Little Colorado River at Woodruff, AZ. 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
23.2 78.4 284
19.6 130 837
15.8 112 692
8.7 52.3 278
6 42.5 248
3 22.5 148
1.2 14.1 133
1.1 10.3 73.2
0.8 7.2 42
0.6 5.6 28.3
0.5 5.1 29.7
0.7 8.4 116
0.6 7.1 63.6
0.4 4.9 43.7

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 122 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 1.2 8 47
February 0.7 8.2 103.1
March 0.5 6.5 185
April 0.1 3.9 136.7
May 0 2 26.5
June 0 0.8 6.7
July 0.3 7.3 178.1
August 1.6 19.7 359.4
September 1.1 8.5 161.1
October 1.2 5.8 60.2
November 0.7 5.7 23.5
December 1.2 6.6 34.6

All values in cubic feet per second (cfs).

Common questions

When does Little Colorado River at Woodruff, AZ normally run highest?
August, on the long-term record. The median daily flow that month is about 19.7 cfs, against 0.8 cfs in June, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Little Colorado River at Woodruff, AZ?
It depends on the month. In January, half of days historically fall near 8 cfs, with the middle 80% of days between 1.2 and 47 cfs. The month-by-month table on this page gives the full range.
How long has Little Colorado River at Woodruff, AZ been measured?
Discharge records at USGS site 09394500 begin in 1905, about 121 years, covering roughly 9,060 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Little Colorado River at Woodruff, AZ?
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 Little Colorado River at Woodruff, AZ?
The gauge sits at 34.7825, -110.04396, in Arizona, in hydrologic subbasin 15020002, at an elevation of about 5,132 feet, draining roughly 8,072 square miles.
Can I use Little Colorado River at Woodruff, AZ 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 Little Colorado River

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

Other gauges in this subbasin