Rivermatics

USGS Streamgage 06408650

Cheyenne River near Scenic, SD

Cheyenne River near Scenic, SD is USGS streamgage 06408650 in South Dakota, monitoring river discharge in hydrologic subbasin 10120109. It sits on the Cheyenne River, alongside 8 other gauges Rivermatics tracks on the same river. It drains a watershed of about 11,208 square miles. Discharge records at this site go back to 2007. Typical flow runs near 110.7 cfs in July and 164.3 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.

View live conditions & forecast →

Gauge details

State
South Dakota
Drainage area
11,208 sq mi
Gauge elevation
2,445 ft
Subbasin (HUC-8)
10120109
Coordinates
43.89806, -102.64361
USGS site number
06408650
Records begin
2007-04-01 (19 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Cheyenne River near Scenic, SD. 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
37.6 42.1 47.2
36.3 42.3 51.1
35.8 43.4 56.3
36.4 45.8 63.1
36.4 46.7 64.8
36.2 47.7 69
37.9 56.5 107
40.8 65 132
40.7 63.8 120
38.9 57.9 97.1
36.9 53.5 83.3
35 50.6 76.3
33.9 50.7 80.5
32.6 49.7 82.1

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 19 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 44.1 84.7 180
February 53.5 95.7 200.9
March 70.2 127.7 1,301.7
April 68.5 164.3 842.4
May 68.2 173.7 2,706.1
June 64 146 2,482.3
July 49.5 110.7 1,086.4
August 45.6 97.4 485.7
September 50.8 86.4 241.4
October 52.8 86.6 487
November 50.6 89.3 212
December 40.9 84 193.3

All values in cubic feet per second (cfs).

Common questions

When does Cheyenne River near Scenic, SD normally run highest?
May, on the long-term record. The median daily flow that month is about 173.7 cfs, against 84 cfs in December, 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 Scenic, SD?
It depends on the month. In January, half of days historically fall near 84.7 cfs, with the middle 80% of days between 44.1 and 180 cfs. The month-by-month table on this page gives the full range.
How long has Cheyenne River near Scenic, SD been measured?
Discharge records at USGS site 06408650 begin in 2007, about 19 years, covering roughly 6,969 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 Scenic, SD?
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 Scenic, SD?
The gauge sits at 43.89806, -102.64361, in South Dakota, in hydrologic subbasin 10120109, at an elevation of about 2,445 feet, draining roughly 11,208 square miles.
Can I use Cheyenne River near Scenic, SD 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