Page 25 - Yucaipa Valley Water District - Board Workshop
P. 25
Workshop Memorandum No. 16-002 Page 3 of 13




The change in storage calculations are a useful tool for the overall water management in our area.
The change in storage (“available storage space”) calculation quantifies the amount of water that
can be added to a groundwater basin to bring the ground water levels up to 50 feet below the
ground surface. By analogy, while a fuel gauge tells you how much gas is in your fuel tank, the
available storage space calculation tells you how much fuel your tank needs to be completely full.













































The figure on page 13 of 13 of this memorandum compares the available storage space in 1991
with the available storage space in 2014. Based on this information, five of the seven local
groundwater basins need less water to be complet ely full in 2014 than they required in 1991. This
is a good indication that the groundwater management activities implemented by Yucaipa Valley
Water District are working.

The purpose of this agenda item is to provide the draft 2015 change in storage calculations that
will be used as an internal draft document that augments the data included in the attached report.
















Yucaipa Valley Water District - January 12, 2016 - Page 25 of 279
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