Summary of Western US SNOTEL Snow/Precipitation Update Report
Based on Mountain Data from NRCS SNOTEL Sites
**Provisional data, subject to revision**
Data based on the first reading of the day (typically 00:00) for Tuesday, September 26, 2023
State/River Basin Snow Water
Equivalent
Water Year-to-Date
Precipitation
# of
Sites
Percent of
Median
# of
Sites
Percent of
Median
Alaska 17/59 *   44/59 109   
Arizona 11/23 *   18/23 128   
California 31/32 *   32/32 169   
Colorado 78/105 *   100/105 106   
Idaho North of Salmon River 17/31 *   27/31 82   
Idaho South of Salmon River 47/65 *   63/65 118   
Montana 87/91 *   86/91 102   
Nevada 28/32 *   30/32 152   
New Mexico 18/21 *   20/21 105   
Oregon 59/81 *   75/81 91   
Utah 87/90 *   89/90 138   
Washington 61/76 *   65/76 82   
Wyoming 78/85 *   76/85 114   
Arkansas River Basin 4/6 *   6/6 94   
Colorado River Basin 88/108 *   102/108 115   
Columbia River Basin 206/266 *   250/266 90   
Missouri River Basin 45/48 *   45/48 115   
Rio Grande River Basin 22/29 *   28/29 100   
The Great Basin 103/105 *   105/105 152