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Pactola Marina

Castle Creek near Rapid City, SD

River39.1 mi
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Around here

Around Castle Creek

Dutchman · 3 miBlack Hills National Forest1 mi5 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this river

Castle Creek is a 39.1 mile river near Pactola Marina in South Dakota. Streamflow is measured at the USGS gauge Castle Creek below Deerfield Dam, SD (site 06410000). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1947 to 2025

Castle Creek typically runs highest in May, at a median 19 cfs, and lowest in January, at 2.2 cfs. The highest flow on record for any single day is 200 cfs, in 1952.

Show the numbers
Typical flow by month at Castle Creek below Deerfield Dam, SD, in cfs
MonthTypical (cfs)Usual range (cfs)
January2.22.0 to 2.5
February2.32.1 to 2.5
March8.72.3 to 15
April1711 to 23
May1914 to 26
June1611 to 26
July149.3 to 23
August1610 to 23
September1510 to 23
October3.62.2 to 17
November2.32.0 to 2.5
December2.21.9 to 2.4

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 79 years of record. Statistics published by the US Geological Survey for Castle Creek below Deerfield Dam, SD (site 06410000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

2 mapped launches sit in the mapped area of Castle Creek, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.

  • Deerfield - Dutchman Public Water AccessPublic
  • Deerfield - Custer Crossing Public Water AccessPublic

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Put Castle Creek on your wall

This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.

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