CC 2019-08-27_08f Monthly Water Supply and Demand Update_July 2019
MEMORANDUM
TO: CITY COUNCIL
FROM: BILL ROBESON, PUBLIC WORKS DIRECTOR
BY: SHANE TAYLOR, UTILITIES MANAGER
SUBJECT: MONTHLY WATER SUPPLY AND DEMAND UPDATE
DATE: AUGUST 27, 2019
SUMMARY OF ACTION:
The update reports the water supply and demand for July 2019. 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 monthly Water Supply and
Demand Report.
BACKGROUND:
On April 25, 2017, the City Council, by resolution, rescinded the Stage 1 Water Shortage
Emergency along with related emergency 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 urged citizens to continue to
practice every day water saving measures, and reiterated that the previously adopted
water saving measures were to remain in effect.
In July 2019, the City’s water use was 225.3 acre-feet with a per capita use of 134 gallons
per day/per person. There was a total of 0” of rainfall in July. The water use for the
current “rolling” water year from August 2018 to July 2019 was 2,120 acre-feet, which
equates to a per capita use of 107 gallons per day/per person. There was a total of 19.35”
of rain fall for this period.
ANALYSIS OF ISSUES:
The United States Drought Monitor, as of August 15, 2019 shows San Luis Obispo County
in a normal condition. Rainfall to date (July 1, 2019 to July 31, 2019) was 0 inches at the
Corporation Yard rain gauge. Lopez Lake, as of August 15, 2019, is at 56.7% capacity
(27,985 acre-feet of storage).
Item 8.f. - Page 1
CITY COUNCIL
MONTHLY WATER SUPPLY AND DEMAND UPDATE
AUGUST 27, 2019
PAGE 2
The new water year began on April 1, 2019 and the current total available supply from
Lopez is 2,290 acre-feet, our normal entitlement. 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. The projected water use for 2019/20 is 2,200 acre-feet. In conclusion, based
on average rainfall for the next two years, the current supply will meet the projected
demand.
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 Monthly Operations Report for July 2019
1a. Lopez Monthly Operations Report for March 2018
2. Lopez Reservoir Storage Projection
3. Monthly Water Use Comparison
Item 8.f. - Page 2
San Luis Obispo County Flood Control and Water DistrictZone 3 - Lopez Project - Monthly Operations ReportJuly, 20190.00Note: Deliveries are in acre feet. One acre foot = 325, 850 gallons or 43, 560 cubic feet. Safe yield is 8,730 acre feet."Year to Date" is January to present for State water, April to present for Lopez deliveries, and July to present for rainfall.755.63April to Present0.00Arroyo Grande2290Lopez Dam OperationsLake Elevation (full at 522.37 feet)495.59Storage (full at 49200 acre feet)28365Rainfall0Downstream Release (4200 acre feet/year)194.26Spillage (acre feet)0This MonthYear to Date749.420.00378.00202.00Entl.Surplus Water DeclaredUsage2668.00TotalLopez Water Deliveries188.91Oceano CSD30350.0076.34353.00262.58Grover Beach800132.0066.85932.00312.90Pismo Beach892147.0075.181039.0025.31CSA 1224540.009.02285.00555.551120100.0048.78278.2110.982270.00State Water Deliveries1545.334530747.00429.395277.00679.241501118.33Total ContractorDifference (feet)-26.78% Full57.7%Comments:Available Surplus Water is shown and as designated per BOS May 14, 2019 Declaration of Surplus Water. Beginning with July report, Surplus water shown will be amount purchased by each agency.1) Oceano supplied State Water to Canyon Crest via Arroyo Grande's Edna turn out. A totalof 2.19 AF delivered to Canyon Crest was added to Oceano's State Water usage this month and 2.19 AF was subtracted from Arroyo Grande's usage this month.April to Present Lopez Entitlement+Surplus Water Usage050100150200250Jan '19 Feb '19 Mar '19 Apr '19 May '19 Jun '19 Jul '19Acre FeetAGGBOCSDPBCSA12January to Present State Water Usage020406080100120Jan '19 Feb '19 Mar '19 Apr '19 May '19 Jun '19 Jul '19Acre FeetOCSDPBCSA12SanMigSan Miguelito63.9312710.12This Month%TotalJanuary to PresentUsageThis Month% of Annual RequestUsage% of Annual Request202Total Water Deliveries This Month76.3466.85175.1817.2310.12547.72Annual Request0.00Usage0.000.000.000.00%0.000.000.000.000.00755.63188.91262.58312.9025.311545.330.00483.00SWP DeliveriesSWP DeliveriesChange in Storage69-49.331191.28This Month Stored State Water0.0%8.8%28.3%25.2%53.5%8.4%28.2%8.4%30.1%3.7%8.9%8.9%49.6%30.4%180.7%0.0%4.8%9.5%29.3%7.9%45.3%8.0%50.3%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%33.0%62.3%32.8%35.1%10.3%34.1%0.0%EntitlementSurplusUsage%Usage%EntitlementSurplusUsage%1240.61Last Month Stored State WaterSurplus Requested0.00400.0020.00200.000.00620.00Friday, August 9, 2019Page 1 of 1Report printed by:AdminData entered by:D. SpiegelATTACHMENT 1Item 8.f. - Page 3I 1□ ■ □ □ ■ 1□ □ ■ □ l I I I
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213.8225.3127134050100150200250Jul‐18Jul‐19Monthly Water Use ComparisonAcre FeetUsage (gpcd)ATTACHMENT 3Item 8.f. - Page 6■ ■