Between atmospheric rivers, an update on the status of local reservoirs

This post was originally published on this site

We have previously reported on how the ongoing series of storms to deluge California this winter have refilled reservoirs and groundwater reserves and snowpack, here and here.

Now as yet another storm approaches Southern California with still another possible after that, how are those reservoirs doing?

Name of Reservoir % of Capacity % of Historical Average March 1
% of Capacity
March 1
% of Historical Average
March 20
% of Capacity
March 20
% of Historical Average
Cachuma
data from January 14
85% 132% 98% 136% 97% 130%
Casitas
data from January 13
37% 51% 45% 60% 56% 73%
Castaic 54% 70% 57% 71% 73% 87%
Diamond Valley 61% 84% 60% 81% 60% 81%

The green percentages are as of today, March 20.

The information below on the Sierra snowpack is from the California Cooperative Snow Survey for the Southern Sierras as of January 16, 2023, with updated information as of February 28, and as of March 20.

Description Jan. 16 Feb. 28 Mar. 20
Number of stations reporting 32 29 29
Average snow water equivalent 32.1 inches 42.0 inches 57.8 inches
Percent of April 1 average 142% 162% 268%
Percent of normal for this date 288% 186% 278%

The current forecast calls for rain today through Wednesday, heavy at times with a high-wind warning for Tuesday.