MORES CREEK − NR ARROWROCK DAM (MORI1)
   State:  Idaho
   County:  Ada
   Latitude:  43 39' 0" North
   Longitude:  115 58' 59" West
   Elevation:  3120 ft

   Supporting NWS Forecast Office: WFO Boise

   
Click for NWS Official River Forecasts for MORI1
   


   Action Stage:  
8 ft
   Flood Stage:  
8.8 ft
Daily Historical Statistics for February 08, 2026
Mean Stage: 2.76 ft  Mean Flow: 187 cfs
Max Stage: 4.87 ft  Max Flow: 1150 cfs (2015)
Min Stage:  2.02 ft   Min Flow: 48 cfs (1977)

Statistics based on water years: 1951-2025
* statistics estimated based on current rating

Record Stage: 
9.55 ft

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

Hydrograph plot for MORI1

Data Used In Plot   "label   USBR Observations