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Big Sioux River at Watertown Sioux Conifer Road

Critical Stages
8' - Action
9' - Flood
10' - Moderate
12' - Major

Latest Observation

Updated: 4:15 PM CST 12/15/25

Status: No Flooding

Stage: 4.14 ft

Flow: 0.0077 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
4:15 PM 12/15 4.14 0.0077
4:00 PM 12/15 4.14 0.0077
3:45 PM 12/15 4.14 0.0077
3:30 PM 12/15 4.13 0.0072
3:15 PM 12/15 4.13 0.0072
3:00 PM 12/15 4.13 0.0072
2:45 PM 12/15 4.13 0.0072
2:30 PM 12/15 4.13 0.0072
2:15 PM 12/15 4.13 0.0072
2:00 PM 12/15 4.13 0.0072
1:45 PM 12/15 4.13 0.0072
1:30 PM 12/15 4.12 0.0068
1:15 PM 12/15 4.13 0.0072
1:00 PM 12/15 4.13 0.0072
12:45 PM 12/15 4.12 0.0068
12:30 PM 12/15 4.13 0.0072
12:15 PM 12/15 4.12 0.0068
12:00 PM 12/15 4.12 0.0068
11:45 AM 12/15 4.13 0.0072
11:30 AM 12/15 4.13 0.0072
11:15 AM 12/15 4.13 0.0072
11:00 AM 12/15 4.13 0.0072
10:45 AM 12/15 4.13 0.0072
10:30 AM 12/15 4.13 0.0072
10:15 AM 12/15 4.13 0.0072
10:00 AM 12/15 4.13 0.0072
9:45 AM 12/15 4.12 0.0068
9:30 AM 12/15 4.12 0.0068
9:15 AM 12/15 4.13 0.0072
9:00 AM 12/15 4.13 0.0072
Hydrograph for Big Sioux River at Watertown Sioux Conifer Road
15.5' - The bridge on 14th Ave NW is overtopped.
14' - The bridge on Sioux Conifer Road is overtopped.
12' - Sioux Conifer Road floods south of the gauge, and water reaches the bottom of the bridge at the gauge.
10' - Significant amounts of pasture land are flooded.
8' - Minor lowland flooding begins, mainly upstream of the gauge.
DateStage (ft)
Apr 6, 1997 12.49
Apr 7, 2001 11.58
Apr 8, 1969 11.4
Apr 13, 2023 11.18
Mar 28, 2019 10.98
Apr 9, 2011 10.6
Apr 9, 1952 10.3
Mar 30, 1960 10.29
Mar 15, 2010 9.81
Apr 22, 2018 9.81
Mar 23, 2009 9.77
May 31, 2022 9.47
May 23, 1962 9.46
Mar 22, 2007 9.24
Apr 13, 1947 8.93
Jul 28, 1953 8.92
Oct 25, 2019 8.9
Mar 16, 1972 8.86
Mar 26, 1948 8.3
Mar 15, 1946 8.25

Data provided by the National Weather Service.