CC 2018-01-23_09h Annual Water Supply and Demand Update
MEMORANDUM
TO: CITY COUNCIL
FROM: SHANE TAYLOR, UTILITIES MANAGER
SUBJECT: ANNUAL WATER SUPPLY AND DEMAND UPDATE
DATE: JANUARY 23, 2018
SUMMARY OF ACTION:
The update reports the water supply and demand for Calendar Year 2017. Current
Lopez Reservoir level and projected levels are provided in the attachments.
IMPACT ON FINANCIAL AND PERSONNEL RESOURCES:
Approximately two (2) hours of staff time is required to prepare the report.
RECOMMENDATION:
It is recommended the City Council receive and file the annual Water Supply and
Demand Report.
BACKGROUND:
On April 25, 2017, the City Council, by resolution, rescinded the Stage 1 Water
Shortage Emergency and related water conservation measures and restrictions. During
the public hearing the City Council requested staff to continue preparing the monthly
water supply and demand updates. The Council also urged citizens to remain
cognizant of how they use water, and stated that the previously adopted water saving
measures are still in effect.
In 2017, the City’s water use was 29% below 2013. The State’s previously mandated
water use reduction was based on the 2013 water usage. There is currently no required
reduction imposed by the State Water Resources Control Board. The City however, is
still required to report monthly statistics to the State. As a comparison for the recent
year, water usage was 13% higher in 2017 than 2016. The Per Capita use was 111
gallons per day per person.
ANALYSIS OF ISSUES:
The United States Department of Agriculture (USDA) Drought Monitor, as of January 4,
2018 shows San Luis Obispo County in a moderate drought. Rain fall to date (July 1,
2017 to January 9, 2018) is 3.0 inches at the Corporation Yard gauge. Lopez Lake, as
of January 9, 2018 is at 51.6% capacity (25,488 acre-feet of storage).
Item 9.h. - Page 1
CITY COUNCIL
ANNUAL WATER SUPPLY AND DEMAND UPDATE
JANUARY 23, 2018
PAGE 2
At the County of San Luis Obispo Board of Supervisors meeting on May 23, 2017, the
Board rescinded the drought emergency proclamation. However, as recommended by
Zone 3 Advisory Board, the Board of Supervisors kept the Low Reservoir Response
Plan in place. This will allow carryover water to be available until March 30, 2018 to all
contractors. The new water year began on April 1, 2017 and the current total available
supply from Lopez is 2,290 acre-feet, our normal entitlement, plus 1,249 acre-feet of
carryover. In addition we have 1,323 acre-feet of ground water entitlement from the
Santa Maria Basin and 200 acre-feet from the Pismo Formation.
Based on the projected water use of 2,500 acre-feet, we will meet the demand in water
year 2017/18, using only 50% of current supply.
ADVANTAGES:
No advantages noted at this time.
DISADVANTAGES:
No disadvantages noted at this time.
ALTERNATIVES:
Not applicable at this time.
ENVIRONMENTAL REVIEW:
No environmental review is required for this item.
PUBLIC NOTIFICATION AND COMMENTS:
The Agenda was posted at City Hall and on the City’s website in accordance with
Government Code Section 54954.2.
Attachment:
1. Lopez Reservoir Storage Projections
2. Zone 3 – Lopez Project – Monthly Operations Report
Item 9.h. - Page 2
ATTACHMENT 1
Item 9.h. - Page 3
ATTACHMENT 2
Item 9.h. - Page 4