Rivermatics

USGS Streamgage 06409000

Castle Creek above Deerfield Reservoir near Hill City, SD

Castle Creek above Deerfield Reservoir near Hill City, SD is USGS streamgage 06409000 in South Dakota, monitoring river discharge in hydrologic subbasin 10120110. It drains a watershed of about 79 square miles. Discharge records at this site go back to 1948. Typical flow runs near 11.8 cfs in July and 15.5 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
South Dakota
Drainage area
79 sq mi
Gauge elevation
5,927 ft
Subbasin (HUC-8)
10120110
Coordinates
44.01361, -103.83
USGS site number
06409000
Records begin
1948-07-01 (78 years)

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 5.3 9.1 16.2
February 5.8 9.2 16.6
March 6.3 11.3 19.7
April 9.8 15.5 27.5
May 10.1 16.2 32
June 8.4 13.7 32.3
July 7.1 11.8 25.5
August 6.6 10.9 21.2
September 6.7 10.8 19.8
October 6.7 10.9 19.5
November 6.3 10.2 17.9
December 5.8 9.2 17.5

All values in cubic feet per second (cfs).

Common questions

When does Castle Creek above Deerfield Reservoir near Hill City, SD normally run highest?
May, on the long-term record. The median daily flow that month is about 16.2 cfs, against 9.1 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 Castle Creek above Deerfield Reservoir near Hill City, SD?
It depends on the month. In January, half of days historically fall near 9.1 cfs, with the middle 80% of days between 5.3 and 16.2 cfs. The month-by-month table on this page gives the full range.
How long has Castle Creek above Deerfield Reservoir near Hill City, SD been measured?
Discharge records at USGS site 06409000 begin in 1948, about 78 years, covering roughly 9,097 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Castle Creek above Deerfield Reservoir near Hill City, SD?
The gauge sits at 44.01361, -103.83, in South Dakota, in hydrologic subbasin 10120110, at an elevation of about 5,927 feet, draining roughly 79 square miles.
Can I use Castle Creek above Deerfield Reservoir near Hill 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