Streamflow discharge was last observed at 139 cfs, and a gauge height of 1.35 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 196 .
Weather today, Tomorrow,
The river is mainly fed by precipitation and runoff from surrounding agricultural land. The potential tributaries include Cobb River and Le Sueur River. The seasonal trends show that the river tends to have higher flows during the spring when snowmelt occurs, and lower flows during the summer and fall months. Interestingly, the Watonwan River is a designated trout stream and supports a healthy population of brown trout. Additionally, the river has been the site of construction of several dams over the years, including the Garden City Dam which was built in the early 1900s to create a reservoir for irrigation purposes.
| Elevation | 931.0 ft |
| Last Updated | |
| Gage height, ft | 1.35 ft |
| Stream water level elevation above NAVD 1988, in ft | 906.62 ft |
| Streamflow, ft³/s | 139.0 ft3/s |
| Percent of Normal | 204% |
| Year Over Year Average | 68 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 12,000 cfs |