About this river
Hay Creek is a 13.9 mile river near Spearfish Canyon Adventures in South Dakota. Streamflow is measured at the USGS gauge Redwater River above Belle Fourche, SD (site 06433000). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1946 to 2026
Hay Creek typically runs highest in May, at a median 201 cfs, and lowest in July, at 48 cfs. The highest flow on record for any single day is 5,790 cfs, in 1982.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 144 | 120 to 170 | |
| February | 150 | 128 to 177 | |
| March | 154 | 132 to 197 | |
| April | 177 | 142 to 224 | |
| May | 201 | 135 to 292 | |
| June | 143 | 80 to 278 | |
| July | 48 | 10 to 119 | |
| August | 49 | 14 to 102 | |
| September | 107 | 71 to 148 | |
| October | 146 | 111 to 184 | |
| November | 155 | 128 to 188 | |
| December | 149 | 127 to 175 |
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 80 years of record. Statistics published by the US Geological Survey for Redwater River above Belle Fourche, SD (site 06433000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Hay Creek's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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