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Portneuf River at Topaz

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

Latest Observation

Updated: 12:15 PM MST 12/15/25

Status: No Flooding

Stage: 2.72 ft

Flow: 0.149 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
5 PM 12/15 2.58 0.124
11 PM 12/15 2.59 0.126
5 AM 12/16 2.59 0.126
11 AM 12/16 2.6 0.128
5 PM 12/16 2.61 0.129
11 PM 12/16 2.61 0.129
5 AM 12/17 2.63 0.133
11 AM 12/17 2.68 0.142
5 PM 12/17 2.74 0.153
11 PM 12/17 2.78 0.16
5 AM 12/18 2.8 0.164
11 AM 12/18 2.81 0.166
5 PM 12/18 2.79 0.162
11 PM 12/18 2.77 0.159
5 AM 12/19 2.75 0.155
11 AM 12/19 2.74 0.153
5 PM 12/19 2.75 0.155
11 PM 12/19 2.79 0.162
5 AM 12/20 2.85 0.174
11 AM 12/20 2.89 0.183
5 PM 12/20 2.91 0.187
11 PM 12/20 2.93 0.191
5 AM 12/21 2.92 0.189
11 AM 12/21 2.91 0.187
5 PM 12/21 2.88 0.181
11 PM 12/21 2.87 0.179
5 AM 12/22 2.87 0.179
11 AM 12/22 2.88 0.181
5 PM 12/22 2.92 0.189
11 PM 12/22 2.97 0.2
5 AM 12/23 3 0.207
11 AM 12/23 3.02 0.211
5 PM 12/23 3.04 0.216
11 PM 12/23 3.04 0.216
5 AM 12/24 3.03 0.214
11 AM 12/24 3.02 0.211
5 PM 12/24 3.02 0.211
11 PM 12/24 3.03 0.214
5 AM 12/25 3.06 0.221
TimeStage (ft)Flow (kcfs)
12:15 PM 12/15 2.72 0.149
12:00 PM 12/15 2.73 0.151
11:45 AM 12/15 2.74 0.153
11:30 AM 12/15 2.73 0.151
11:15 AM 12/15 2.71 0.147
11:00 AM 12/15 2.67 0.14
10:45 AM 12/15 2.66 0.138
10:30 AM 12/15 2.66 0.138
10:15 AM 12/15 2.67 0.14
10:00 AM 12/15 2.65 0.136
9:45 AM 12/15 2.64 0.135
9:30 AM 12/15 2.64 0.135
9:15 AM 12/15 2.64 0.135
9:00 AM 12/15 2.64 0.135
8:45 AM 12/15 2.64 0.135
8:30 AM 12/15 2.63 0.133
8:15 AM 12/15 2.64 0.135
8:00 AM 12/15 2.65 0.136
7:45 AM 12/15 2.65 0.136
7:30 AM 12/15 2.65 0.136
7:15 AM 12/15 2.65 0.136
7:00 AM 12/15 2.65 0.136
6:45 AM 12/15 2.64 0.135
6:30 AM 12/15 2.61 0.129
6:15 AM 12/15 2.58 0.124
6:00 AM 12/15 2.59 0.126
5:45 AM 12/15 2.59 0.126
5:30 AM 12/15 2.58 0.124
5:15 AM 12/15 2.57 0.123
5:00 AM 12/15 2.58 0.124
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.