Hydrologic Conditions Update May 2021 Kelly Peterson Drought Task Force May 18, 2021
Hydrologic Conditions UpdateMay 2021
Kelly Peterson
Drought Task Force
May 18, 2021
2021 Water Year:
Oct. 1, 2020 – Sept. 30, 2021
2015 WY
• Sacramento River
• Feather River
• Yuba River
• American River
Water Year Indices for the Sacramento River Basin are based on runoff from 4 rivers over 2 years.
Current Year Oct. - Mar.
Previous Year WYI
Current April - July
30%
30%40%
2021 Water Year = Critical
Snowpack ConditionsNorthern Region
This Year April 1st
LastYear April 1st
66 % Normal for Date 57 % Normal for Date
18.4’’ Average Snow Water Equivalent
17.2’’ Average Snow Water Equivalent
Snowpack ConditionsNorthern Region
Reservoir Storage
Lake Oroville Water Levels (feet)
Bars = median WSE change, triangles show range“ * ” = areas primarily served by surface water
2012-2016 Drought
https://www.gov.ca.gov/wp-content/uploads/2021/05/5.10.2021-Drought-Proclamation.pdf
$5.1 billion package
Questions/Discussion