Rivermatics

USGS Streamgage 06386500

Cheyenne River near Spencer, WY

Cheyenne River near Spencer, WY is USGS streamgage 06386500 in Wyoming, monitoring river discharge in hydrologic subbasin 10120106. It sits on the Cheyenne River, alongside 8 other gauges Rivermatics tracks on the same river. It drains a watershed of about 5,323 square miles. Discharge records at this site go back to 1948. Typical flow runs near 5.2 cfs in July and 3.8 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
Wyoming
Drainage area
5,323 sq mi
Gauge elevation
3,592 ft
Subbasin (HUC-8)
10120106
Coordinates
43.42111, -104.13111
USGS site number
06386500
Records begin
1948-10-01 (78 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Cheyenne River near Spencer, WY. 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
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0

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 78 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 0 0 3.1
February 0 0.2 35.9
March 0 3.5 50.5
April 0 3.8 41.7
May 0 11 282.6
June 0 19.7 420.9
July 0 5.2 185.4
August 0 2.1 81.2
September 0 0.1 20.4
October 0 0 9.7
November 0 0 4.1
December 0 0 2.3

All values in cubic feet per second (cfs).

Common questions

When does Cheyenne River near Spencer, WY normally run highest?
June, on the long-term record. The median daily flow that month is about 19.7 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Cheyenne River near Spencer, WY?
It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 3.1 cfs. The month-by-month table on this page gives the full range.
How long has Cheyenne River near Spencer, WY been measured?
Discharge records at USGS site 06386500 begin in 1948, about 78 years, covering roughly 6,555 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Cheyenne River near Spencer, WY?
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 Cheyenne River near Spencer, WY?
The gauge sits at 43.42111, -104.13111, in Wyoming, in hydrologic subbasin 10120106, at an elevation of about 3,592 feet, draining roughly 5,323 square miles.
Can I use Cheyenne River near Spencer, WY 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 Cheyenne River

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

Other gauges in this subbasin