Rivermatics

USGS Streamgage 06412810

Cleghorn Springs at Rapid City, SD

Cleghorn Springs at Rapid City, SD is USGS streamgage 06412810 in South Dakota, monitoring river discharge in hydrologic subbasin 10120110. Discharge records at this site go back to 1992. Typical flow runs near 12 cfs in July and 12.3 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
Gauge elevation
3,371 ft
Subbasin (HUC-8)
10120110
Coordinates
44.05889, -103.29694
USGS site number
06412810
Records begin
1992-09-22 (34 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Cleghorn Springs at Rapid City, 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
9.4 9.6 9.7
9.4 9.6 9.8
9.3 9.6 9.8
9.1 9.5 9.9
9 9.5 10
8.9 9.5 10
8.8 9.8 11.5
8.7 9.7 11.1
8.6 9.6 11.1
8.3 9.5 10.8
8.4 9.5 10.8
8.3 9.5 10.8
8.3 9.5 10.8
8.2 9.5 10.7

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 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 9.8 12 14
February 9.8 11.9 13.2
March 9.9 12 13.7
April 9.9 12.3 14.3
May 9.8 12.7 15.4
June 9.5 12 15.9
July 9.2 12 15
August 8.8 11.9 14.4
September 8.6 11.7 14
October 9.2 11.7 14.2
November 9.9 12 14
December 9.9 12 14.1

All values in cubic feet per second (cfs).

Common questions

When does Cleghorn Springs at Rapid City, SD normally run highest?
May, on the long-term record. The median daily flow that month is about 12.7 cfs, against 11.7 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Cleghorn Springs at Rapid City, SD?
It depends on the month. In January, half of days historically fall near 12 cfs, with the middle 80% of days between 9.8 and 14 cfs. The month-by-month table on this page gives the full range.
How long has Cleghorn Springs at Rapid City, SD been measured?
Discharge records at USGS site 06412810 begin in 1992, about 34 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 Cleghorn Springs at Rapid City, 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 Cleghorn Springs at Rapid City, SD?
The gauge sits at 44.05889, -103.29694, in South Dakota, in hydrologic subbasin 10120110, at an elevation of about 3,371 feet.
Can I use Cleghorn Springs at Rapid City, 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.

Other gauges in this subbasin