Arkansas River at Portland, CO
River level and flood forecast · Fremont County
Normal1.1 ftas of Mon 1:15 PM
The river is 7.9 ft below flood stage (9 ft).
Flow: 373 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 11 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 9 ft |
| Action stage | 7 ft |
| Record crest (July 6, 2006) | 12.94 ft |
What floods at each level
From the National Weather Service, highest first.
- 15 ftFlood waters flow into parking lot of Holcim Cement Plant.
- 12.5 ftFlood waters reach base of railroad bridge near Holcim Cement Plant.
- 11 ftMajor Flood Stage.
- 10 ftModerate Flood.
- 9.5 ftWater rises to railroad tracks on east side of Holcim Cement Plant.
- 9 ftMinor Flood. Considerable lowland and meadow flooding occurs.
- 8 ftMinor agricultural flooding occurs.
- 7 ftThe river is bankfull.
Highest crests on record
- 12.94 ft — July 6, 2006
- 11.26 ft — August 2, 1976
- 10.09 ft — August 2, 1975
- 9.46 ft — September 12, 2013
- 8.93 ft — July 23, 1985
Recent crests: 7.48 ft (June 10, 2024) · 7.52 ft (July 1, 2019) · 7.04 ft (July 23, 2018) · 6.43 ft (June 23, 2017) · 8.09 ft (June 18, 2015)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (PRTC2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.