YAKIMA − AT KIONA (KIOW1)
   State:  Washington
   County:  Yakima
   Latitude:  46 15' 11" North
   Longitude:  119 28' 37" West
   Elevation:  454 ft

   Supporting NWS Forecast Office: WFO Pendleton

   
Click for NWS Official River Forecasts for KIOW1
   


   Action Stage:  
11 ft
   Flood Stage:  
13 ft
   Moderate Flood Stage:  
14.5 ft
   Major Flood Stage:  
16 ft
Daily Historical Statistics for February 18, 2026
Mean Stage: 5.91 ft  Mean Flow: 4640 cfs
Max Stage: 14.35 ft  Max Flow: 19900 cfs (2016)
Min Stage:  3.19 ft   Min Flow: 1150 cfs (1977)

Statistics based on water years: 1934-2024
* statistics estimated based on current rating

Record Stage: 
21.57 ft
Record Flow: 
67000 cfs
Date of Record: 
December 23, 1933

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for KIOW1

Data Used In Plot   "label   USGS Observations   


Hydrograph plot for KIOW1

Data Used In Plot   "label   USGS Observations