Little Arkansas River at Alta Mills, KS
River level and flood forecast · Harvey County
Normal-0.4 ftas of Mon 2:15 PM
The river is 22.4 ft below flood stage (22 ft).
Flow: 8 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 27 ft |
| Moderate flood stage | 25 ft |
| Flood stage | 22 ft |
| Action stage | 20 ft |
| Record crest (October 12, 1973) | 27.42 ft |
What floods at each level
From the National Weather Service, highest first.
- 28 ftThe bridge at the river gage site on River Park Road will flood.
- 27 ftA considerable portion of Highway 50 will be underwater south of the gage site mainly east of River Park Road.
- 25 ftAbout a 500 ft wide overflow may be expected across Highway 50, located about 6 miles south of the gage site around River Park Road. Directly south of the gage expect the low lying area to be inundated for a few miles. North of the gage, overflow may be about half mile wide. Expect fields and cropland to be flooded.
- 23 ftJust south of Alta Mills, River Park Road floods 0.2 miles north of the river gage around NW 60th St. There are several sections along a 2 mile span south of the gage site where River Park Road takes on water. Burrton West Park may be closed due to flood waters impacting the site along W Park Rd.
- 22 ftBank overflows will occur at a considerable distance upstream and then 2 miles downstream southeast of the gage site which is located at North River Park Road and Northwest 60th Street.
Highest crests on record
- 27.42 ft — October 12, 1973
- 27.34000015258 ft — October 31, 1979
- 27.3 ft — July 14, 1993
- 26.21 ft — September 28, 1973
- 26.11 ft — May 25, 2007
Recent crests: 14.62 ft (July 27, 2025) · 17.77 ft (July 23, 2025) · 24.22 ft (June 19, 2025) · 14.26 ft (June 20, 2024) · 6.1 ft (June 22, 2023)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ALMK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.