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75E - PH - WATER MANAGEMENT PLAN
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75E - PH - WATER MANAGEMENT PLAN
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6/2/2016 4:41:33 PM
Creation date
6/2/2016 4:18:02 PM
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City Clerk
Doc Type
Agenda Packet
Agency
Public Works
Item #
75E
Date
6/7/2016
Destruction Year
2021
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2015 URBAN WATER MANAGEMENT PLAN <br />5.3 Three-Year Minimum Water Supply <br />As a matter of practice, Metropolitan does not provide annual estimates of the minimum supplies <br />available to its member agencies. As such, Metropolitan member agencies must develop their own <br />estimates for the purposes of meeting the requirements of the Act. <br />Section 135 of the Metropolitan Water District Act declares that a member agency has the right to invoke <br />its "preferential right" to water, which grants each member agency a preferential right to purchase a <br />percentage of Metropolitan's available supplies based on specified, cumulative financial contributions to <br />Metropolitan. Each year, Metropolitan calculates and distributes each member agency's percentage of <br />preferential rights. However, since Metropolitan's creation in 1927, no member agency has ever invoked <br />these rights as a means of acquiring limited supplies from Metropolitan. <br />As captured in its 2015 UWMP, Metropolitan believes that the water supply and demand management <br />actions it is undertaking will increase its reliability throughout the 25 -year period addressed in its plan. <br />Thus for purposes of this estimate, it is assumed that Metropolitan will be able to maintain the identified <br />supply amounts throughout the three -year period. <br />Metropolitan projects reliability for full service demands through the year 2040. Additionally, through a <br />variety of groundwater reliability programs conducted by OCWD and participated in by the City, local <br />supplies are projected to be maintained at demand levels. Based on Metropolitan's WSAP, the City is <br />expected to fully meet demands for the next three years assuming Metropolitan is not in shortage, a BPP <br />of 70 percent for Local Supplies, and zero allocations are imposed for Imported Supplies. The Three Year <br />Estimated Minimum Water Supply is listed in Table 5 -2. <br />Table 5.2: Minimum Supply Next Three Years (AF) <br />5.4 Catastrophic Supply Interruption <br />Given the great distances that imported supplies travel to reach Orange County, the region is vulnerable <br />to interruptions along hundreds of miles aqueducts, pipelines and other facilities associated with <br />delivering the supplies to the region. Additionally, the infrastructure in place to deliver supplies are <br />susceptible to damage from earthquakes and other disasters. <br />5.4.1 Metropolitan <br />Metropolitan has comprehensive plans for stages of actions it would undertake to address a catastrophic <br />interruption in water supplies through its WSDM and WSAP. Metropolitan also developed an Emergency <br />Storage Requirement to mitigate against potential interruption in water supplies resulting from <br />aroadis.com 75E-66 <br />5 -5 <br />
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