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Portneuf River at Topaz

Critical Stages
3.5' - Action
4.02' - Flood
Moderate
Major

Latest Observation

Updated: 9:15 AM MST 12/16/25

Status: No Flooding

Stage: 2.69 ft

Flow: 0.144 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
11 AM 12/16 2.66 0.138
5 PM 12/16 2.66 0.138
11 PM 12/16 2.66 0.138
5 AM 12/17 2.66 0.138
11 AM 12/17 2.74 0.153
5 PM 12/17 2.84 0.172
11 PM 12/17 2.9 0.185
5 AM 12/18 2.94 0.193
11 AM 12/18 2.95 0.195
5 PM 12/18 2.94 0.193
11 PM 12/18 2.9 0.185
5 AM 12/19 2.87 0.179
11 AM 12/19 2.84 0.172
5 PM 12/19 2.83 0.17
11 PM 12/19 2.86 0.176
5 AM 12/20 2.92 0.189
11 AM 12/20 2.97 0.2
5 PM 12/20 3 0.207
11 PM 12/20 3.02 0.211
5 AM 12/21 3.02 0.211
11 AM 12/21 3 0.207
5 PM 12/21 2.99 0.204
11 PM 12/21 3 0.207
5 AM 12/22 3.02 0.211
11 AM 12/22 3.04 0.216
5 PM 12/22 3.07 0.223
11 PM 12/22 3.08 0.226
5 AM 12/23 3.09 0.228
11 AM 12/23 3.09 0.228
5 PM 12/23 3.08 0.226
11 PM 12/23 3.06 0.221
5 AM 12/24 3.04 0.216
11 AM 12/24 3.03 0.214
5 PM 12/24 3.03 0.214
11 PM 12/24 3.05 0.218
5 AM 12/25 3.07 0.223
11 AM 12/25 3.09 0.228
5 PM 12/25 3.11 0.233
11 PM 12/25 3.12 0.236
5 AM 12/26 3.12 0.236
TimeStage (ft)Flow (kcfs)
9:15 AM 12/16 2.69 0.144
9:00 AM 12/16 2.7 0.145
8:45 AM 12/16 2.7 0.145
8:30 AM 12/16 2.68 0.142
8:15 AM 12/16 2.68 0.142
8:00 AM 12/16 2.66 0.138
7:45 AM 12/16 2.67 0.14
7:30 AM 12/16 2.67 0.14
7:15 AM 12/16 2.67 0.14
7:00 AM 12/16 2.67 0.14
6:45 AM 12/16 2.67 0.14
6:30 AM 12/16 2.71 0.147
6:15 AM 12/16 2.69 0.144
6:00 AM 12/16 2.7 0.145
5:45 AM 12/16 2.69 0.144
5:30 AM 12/16 2.69 0.144
5:15 AM 12/16 2.68 0.142
5:00 AM 12/16 2.66 0.138
4:45 AM 12/16 2.66 0.138
4:30 AM 12/16 2.65 0.136
4:15 AM 12/16 2.65 0.136
4:00 AM 12/16 2.65 0.136
3:45 AM 12/16 2.64 0.135
3:30 AM 12/16 2.65 0.136
3:15 AM 12/16 2.64 0.135
3:00 AM 12/16 2.64 0.135
2:45 AM 12/16 2.63 0.133
2:30 AM 12/16 2.63 0.133
2:15 AM 12/16 2.63 0.133
2:00 AM 12/16 2.63 0.133
Hydrograph for Portneuf River at Topaz
4.02' - Lowland and crop field flooding possible from Pebble Creek to Inkom.
3.5' - Near bankfull from Pebble Creek Road downstream to Inkom. Isolated ponding in flat areas near Symons Road.
DateStage (ft)
Dec 23, 1964 6
Feb 25, 1957 5.71
Feb 20, 1980 5.59
Jan 22, 1969 5.56
May 21, 1984 5.42
May 18, 1996 5.39
May 14, 1971 5.32
Apr 10, 1976 5.27
May 18, 1997 5.24
May 31, 1983 5.2
May 2, 2006 5
Mar 23, 2018 4.92
May 15, 2011 4.83
Feb 22, 2017 4.51
Feb 11, 2007 4.04
Jun 8, 2010 3.89
Jun 12, 2009 3.83
Jan 21, 2012 3.75
Jun 2, 2019 3.72
Feb 15, 2014 3.55

Data provided by the National Weather Service.