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Portneuf River at Topaz

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

Latest Observation

Updated: 8:15 AM MST 12/17/25

Status: No Flooding

Stage: 2.68 ft

Flow: 0.142 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
11 AM 12/17 2.72 0.149
5 PM 12/17 2.76 0.157
11 PM 12/17 2.78 0.16
5 AM 12/18 2.79 0.162
11 AM 12/18 2.79 0.162
5 PM 12/18 2.77 0.159
11 PM 12/18 2.75 0.155
5 AM 12/19 2.72 0.149
11 AM 12/19 2.71 0.147
5 PM 12/19 2.74 0.153
11 PM 12/19 2.82 0.168
5 AM 12/20 2.89 0.183
11 AM 12/20 2.94 0.193
5 PM 12/20 2.97 0.2
11 PM 12/20 2.97 0.2
5 AM 12/21 2.96 0.198
11 AM 12/21 2.94 0.193
5 PM 12/21 2.93 0.191
11 PM 12/21 2.96 0.198
5 AM 12/22 3.04 0.216
11 AM 12/22 3.14 0.241
5 PM 12/22 3.25 0.27
11 PM 12/22 3.35 0.298
5 AM 12/23 3.41 0.315
11 AM 12/23 3.43 0.321
5 PM 12/23 3.42 0.318
11 PM 12/23 3.39 0.309
5 AM 12/24 3.35 0.298
11 AM 12/24 3.29 0.281
5 PM 12/24 3.25 0.27
11 PM 12/24 3.23 0.264
5 AM 12/25 3.25 0.27
11 AM 12/25 3.28 0.278
5 PM 12/25 3.33 0.292
11 PM 12/25 3.37 0.304
5 AM 12/26 3.39 0.309
11 AM 12/26 3.39 0.309
5 PM 12/26 3.38 0.307
11 PM 12/26 3.36 0.301
5 AM 12/27 3.32 0.289
TimeStage (ft)Flow (kcfs)
8:15 AM 12/17 2.68 0.142
8:00 AM 12/17 2.69 0.144
7:45 AM 12/17 2.69 0.144
7:30 AM 12/17 2.69 0.144
7:15 AM 12/17 2.69 0.144
7:00 AM 12/17 2.69 0.144
6:45 AM 12/17 2.69 0.144
6:30 AM 12/17 2.68 0.142
6:15 AM 12/17 2.68 0.142
6:00 AM 12/17 2.69 0.144
5:45 AM 12/17 2.69 0.144
5:30 AM 12/17 2.69 0.144
5:15 AM 12/17 2.68 0.142
5:00 AM 12/17 2.69 0.144
4:45 AM 12/17 2.68 0.142
4:30 AM 12/17 2.68 0.142
4:15 AM 12/17 2.68 0.142
4:00 AM 12/17 2.68 0.142
3:45 AM 12/17 2.68 0.142
3:30 AM 12/17 2.68 0.142
3:15 AM 12/17 2.68 0.142
3:00 AM 12/17 2.69 0.144
2:45 AM 12/17 2.69 0.144
2:30 AM 12/17 2.68 0.142
2:15 AM 12/17 2.69 0.144
2:00 AM 12/17 2.69 0.144
1:45 AM 12/17 2.69 0.144
1:30 AM 12/17 2.68 0.142
1:15 AM 12/17 2.69 0.144
1:00 AM 12/17 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.