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Arkansas River at Portland

Critical Stages
7' - Action
9' - Flood
10' - Moderate
11' - Major

Latest Observation

Updated: 5:15 AM MST 12/6/25

Status: No Flooding

Stage: 1.38 ft

Flow: 0.254 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
5:15 AM 12/6 1.38 0.254
5:00 AM 12/6 1.38 0.254
4:45 AM 12/6 1.39 0.257
4:30 AM 12/6 1.42 0.265
4:15 AM 12/6 1.44 0.271
4:00 AM 12/6 1.46 0.277
3:45 AM 12/6 1.45 0.274
3:30 AM 12/6 1.45 0.274
3:15 AM 12/6 1.44 0.271
3:00 AM 12/6 1.42 0.265
2:45 AM 12/6 1.41 0.263
2:30 AM 12/6 1.41 0.263
2:15 AM 12/6 1.42 0.265
2:00 AM 12/6 1.41 0.263
1:45 AM 12/6 1.42 0.265
1:30 AM 12/6 1.42 0.265
1:15 AM 12/6 1.41 0.263
1:00 AM 12/6 1.42 0.265
12:45 AM 12/6 1.41 0.263
12:30 AM 12/6 1.41 0.263
12:15 AM 12/6 1.41 0.263
12:00 AM 12/6 1.41 0.263
11:45 PM 12/5 1.41 0.263
11:30 PM 12/5 1.4 0.26
11:15 PM 12/5 1.41 0.263
11:00 PM 12/5 1.4 0.26
10:45 PM 12/5 1.41 0.263
10:30 PM 12/5 1.4 0.26
10:15 PM 12/5 1.37 0.251
10:00 PM 12/5 1.34 0.243
Hydrograph for Arkansas River at Portland
15' - Flood waters flow into parking lot of Holcim Cement Plant.
12.5' - Flood waters reach base of railroad bridge near Holcim Cement Plant.
11' - Major Flood Stage.
10' - Moderate Flood.
9.5' - Water rises to railroad tracks on east side of Holcim Cement Plant.
9' - Minor Flood. Considerable lowland and meadow flooding occurs.
8' - Minor agricultural flooding occurs.
7' - The river is bankfull.
DateStage (ft)
Jul 6, 2006 12.94
Aug 2, 1976 11.26
Aug 2, 1975 10.09
Sep 12, 2013 9.46
Jul 23, 1985 8.93
Aug 12, 1991 8.81
Jun 18, 1995 8.51
Jun 18, 2015 8.09
Aug 17, 1992 8.03
Jun 24, 1999 8.03
Jun 7, 1997 7.7
Jul 1, 2019 7.52
Jun 10, 2024 7.48
Jun 6, 2010 7.13
Jul 23, 2018 7.04
Jun 23, 2017 6.43

Data provided by the National Weather Service.