About this river
Moreau River is a 30.4 mile river near Bridge City Marina and Resort in South Dakota. Streamflow is measured at the USGS gauge Moreau River near Whitehorse, SD (site 06360500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1955 to 2026
Moreau River typically runs highest in May, at a median 113 cfs, and lowest in January, at 0.2 cfs. The highest flow on record for any single day is 29,600 cfs, in 2011.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 0.2 | 0.0 to 11 | |
| February | 3.2 | 0.0 to 59 | |
| March | 100 | 17 to 621 | |
| April | 103 | 34 to 453 | |
| May | 113 | 26 to 503 | |
| June | 104 | 24 to 419 | |
| July | 52 | 10 to 128 | |
| August | 15 | 0.4 to 64 | |
| September | 1.9 | 0.0 to 26 | |
| October | 1.7 | 0.0 to 29 | |
| November | 6.1 | 0.0 to 23 | |
| December | 3.0 | 0.0 to 13 |
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 72 years of record. Statistics published by the US Geological Survey for Moreau River near Whitehorse, SD (site 06360500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Moreau River'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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