Rivermatics

USGS Streamgage 09234500

Green River near Greendale, UT

Green River near Greendale, UT is USGS streamgage 09234500 in Utah, monitoring river discharge in hydrologic subbasin 14040106. It sits on the Green River, alongside 8 other gauges Rivermatics tracks on the same river. It drains a watershed of about 19,400 square miles. Discharge records at this site go back to 1950. Typical flow runs near 1,649.4 cfs in July and 1,288 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, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Utah
Drainage area
19,400 sq mi
Gauge elevation
5,621 ft
Subbasin (HUC-8)
14040106
Coordinates
40.90829, -109.42291
USGS site number
09234500
Records begin
1950-10-01 (76 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Green River near Greendale, UT. 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
2,167 2,203 2,236
2,147 2,204 2,246
2,123 2,201 2,255
2,095 2,200 2,267
2,054 2,200 2,280
1,994 2,195 2,285
1,926 2,187 2,290
1,970 2,193 2,304
1,961 2,190 2,321
1,909 2,175 2,306
1,902 2,167 2,305
1,891 2,159 2,306
1,906 2,158 2,318
1,894 2,153 2,324

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 63 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 867.6 1,866.8 3,272.9
February 849.2 1,750.7 3,384.8
March 826.3 1,163 3,182.3
April 838.2 1,288 3,439.3
May 861.9 1,916.1 4,815.8
June 910.7 1,831 6,701.7
July 884.1 1,649.4 3,638.4
August 871.2 1,718.7 2,949.4
September 887.2 1,730.7 2,732.7
October 841.4 1,498.4 2,851.9
November 847.7 1,513.7 3,109.3
December 873 1,815.5 3,427.4

All values in cubic feet per second (cfs).

Common questions

When does Green River near Greendale, UT normally run highest?
May, on the long-term record. The median daily flow that month is about 1,916.1 cfs, against 1,163 cfs in March, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Green River near Greendale, UT?
It depends on the month. In January, half of days historically fall near 1,866.8 cfs, with the middle 80% of days between 867.6 and 3,272.9 cfs. The month-by-month table on this page gives the full range.
How long has Green River near Greendale, UT been measured?
Discharge records at USGS site 09234500 begin in 1950, about 76 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 Green River near Greendale, UT?
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 Green River near Greendale, UT?
The gauge sits at 40.90829, -109.42291, in Utah, in hydrologic subbasin 14040106, at an elevation of about 5,621 feet, draining roughly 19,400 square miles.
Can I use Green River near Greendale, UT 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 Green River

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

Other gauges in this subbasin