This research product provides near-real-time estimates of snow-water equivalent (SWE) for areas of California at a spatial resolution of 500 m. 

We create reports for specific regions approximately every two weeks from mid-winter through the end of the melt season. The reports are released within a week of satellite image data acquisition and are distributed to water managers and forecasters.  For more information on reporting or to discuss reporting for your area please contact Leanne.Lestak@colorado.edu.

See also:
Intermountain West SWE reports (Colorado, Utah, Wyoming)

User Quote

­We are in the process of finalizing the B-120 update numbers, and are looking at your numbers. Thanks for your efforts to get your product out just in time!
- California Department of Water Resources

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2024

Feb 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Feb 12 (PDF | Table 1 | Table 2 | JPG maps zip)
Feb 29 (PDF | Table 1 | Table 2 | JPG maps zip)
Mar 18 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 08 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 15 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 22 (PDF | Table 1 | Table 2 | JPG maps zip)

2023

Feb 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Feb 14 (PDF | Table 1 | Table 2 | JPG maps zip)
Mar 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Mar 15 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 15 (PDF | Table 1 | Table 2 | JPG maps zip)
May 01 (PDF | Table 1 | Table 2 | JPG maps zip)
May 15 (PDF | Table 1 | Table 2 | JPG maps zip)
May 23 (PDF | Table 1 | Table 2 | JPG maps zip)
May 30 (PDF | Table 1 | Table 2 | JPG maps zip)
Jun 06 (PDF | Table 1 | Table 2 | JPG maps zip)

2022

Jan 15 (PDF | Table 1 | Table 2 | JPG maps zip)
Feb 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Feb 14 (PDF | Table 1 | Table 2 | JPG maps zip)
Mar 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Mar 15 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 01 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 10 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 17 (PDF | Table 1 | Table 2 | JPG maps zip)
Apr 24 (PDF | Table 1 | Table 2 | JPG maps zip)
May 01 (PDF | Table 1 | Table 2 | JPG maps zip)
May 06 (PDF | Table 1 | Table 2 | JPG maps zip)

2021

All Files for 2021 (2021 zip)
Jan 26 (PDF | Table 1 | Table 2)
Feb 01 (PDF | Table 1 | Table 2)
Feb 15 (PDF | Table 1 | Table 2)
Mar 01 (PDF | Table 1 | Table 2)
Mar 13 (PDF | Table 1 | Table 2)
Apr 01 (PDF | Table 1 | Table 2)
Apr 12 (PDF | Table 1 | Table 2)
Apr 19 (PDF | Table 1 | Table 2)
Apr 26 (PDF | Table 1 | Table 2)
May 01 (PDF | Table 1 | Table 2)
May 11 (PDF | Table 1 | Table 2)

2020

All Files for 2020 (2020 zip)
Jan 29 (PDF | Table 1 | Table 2)
Feb 16 (PDF | Table 1 | Table 2)
Mar 03 (PDF | Table 1 | Table 2)
Mar 13 (PDF | Table 1 | Table 2)
Apr 01 (PDF | Table 1 | Table 2)
Apr 14 (PDF | Table 1 | Table 2)
Apr 20 (PDF | Table 1 | Table 2)
Apr 25 (PDF | Table 1 | Table 2)
May 01 (PDF | Table 1 | Table 2)
May 10 (PDF | Table 1 | Table 2)
May 18 (PDF | Table 1 | Table 2)

2019

All Files for 2019 (2019 zip)
Jan 31 (PDF | Table 1 | Table 2)
Feb 19 (PDF | Table 1 | Table 2)
Feb 28 (PDF | Table 1 | Table 2)
Mar 12 (PDF | Table 1 | Table 2)
Mar 31 (PDF | Table 1 | Table 2)
Apr 13 (PDF | Table 1 | Table 2)
May 02 (PDF | Table 1 | Table 2)
May 14 (PDF | Table 1 | Table 2)
Jun 05 (PDF | Table 1 | Table 2)