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Portneuf River at Topaz

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

Latest Observation

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

Status: No Flooding

Stage: 2.66 ft

Flow: 0.138 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
5 AM 12/15 2.64 0.135
11 AM 12/15 2.64 0.135
5 PM 12/15 2.64 0.135
11 PM 12/15 2.63 0.133
5 AM 12/16 2.63 0.133
11 AM 12/16 2.63 0.133
5 PM 12/16 2.64 0.135
11 PM 12/16 2.64 0.135
5 AM 12/17 2.65 0.136
11 AM 12/17 2.71 0.147
5 PM 12/17 2.78 0.16
11 PM 12/17 2.82 0.168
5 AM 12/18 2.85 0.174
11 AM 12/18 2.85 0.174
5 PM 12/18 2.84 0.172
11 PM 12/18 2.82 0.168
5 AM 12/19 2.83 0.17
11 AM 12/19 2.84 0.172
5 PM 12/19 2.87 0.179
11 PM 12/19 2.9 0.185
5 AM 12/20 2.93 0.191
11 AM 12/20 2.95 0.195
5 PM 12/20 2.95 0.195
11 PM 12/20 2.94 0.193
5 AM 12/21 2.92 0.189
11 AM 12/21 2.89 0.183
5 PM 12/21 2.87 0.179
11 PM 12/21 2.85 0.174
5 AM 12/22 2.88 0.181
11 AM 12/22 2.94 0.193
5 PM 12/22 3.02 0.211
11 PM 12/22 3.1 0.231
5 AM 12/23 3.15 0.243
11 AM 12/23 3.18 0.251
5 PM 12/23 3.2 0.256
11 PM 12/23 3.2 0.256
5 AM 12/24 3.21 0.259
TimeStage (ft)Flow (kcfs)
12:15 AM 12/15 2.66 0.138
12:00 AM 12/15 2.67 0.14
11:45 PM 12/14 2.67 0.14
11:30 PM 12/14 2.66 0.138
11:15 PM 12/14 2.67 0.14
11:00 PM 12/14 2.67 0.14
10:45 PM 12/14 2.68 0.142
10:30 PM 12/14 2.66 0.138
10:15 PM 12/14 2.68 0.142
10:00 PM 12/14 2.66 0.138
9:45 PM 12/14 2.66 0.138
9:30 PM 12/14 2.68 0.142
9:15 PM 12/14 2.68 0.142
9:00 PM 12/14 2.67 0.14
8:45 PM 12/14 2.67 0.14
8:30 PM 12/14 2.66 0.138
8:15 PM 12/14 2.68 0.142
8:00 PM 12/14 2.67 0.14
7:45 PM 12/14 2.68 0.142
7:30 PM 12/14 2.67 0.14
7:15 PM 12/14 2.68 0.142
7:00 PM 12/14 2.68 0.142
6:45 PM 12/14 2.68 0.142
6:30 PM 12/14 2.69 0.144
6:15 PM 12/14 2.68 0.142
6:00 PM 12/14 2.68 0.142
5:45 PM 12/14 2.68 0.142
5:30 PM 12/14 2.68 0.142
5:15 PM 12/14 2.68 0.142
5:00 PM 12/14 2.68 0.142
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.