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W A T E R E N F R F. V I T F F RIVERSIDE PUBLIC UTILITIES u . kd& Board Memorandum P U B L I C U T I L I T I L S BOARD OF PUBLIC UTILITIES DATE: AUGUST 13, 2018 GENERAL MANAGER'S REPORT ITEM NO: Summary of Riverside Public Utilities Urban Water Production and Conservation Efforts / Groundwater Level Update As of June 2018 Conservation Efforts RPU's urban water production in June 2018 was 5,912 AF. This is a decrease from last May by 200 Acre-feet or a conservation of 4%. Weather conditions showed a favorable pattern for conservation in rainfall and temperature. May of 2018 was cooler by 3 degrees and experienced 0.2 inches of rainfall increase compared to last year. RPU is still within the historical production range from 2013 to 2017 as shown in Figure 1. Figure 1 also shows that RPU's projected annual urban water production in 2018 is 65,400 AF which is below the compliance target specified in SB X7-7 (i.e. 20% reduction by 2020). The projections for the 2018 urban water production is based on current trends of increased consumption and can be affected by the upcoming permanent water prohibitions, the return of the drought, and the proposed rate increase. The projected annual urban water production is also below RPU's current potable rights, which potentially can maximize RPU's passive assets by 6,400 AF through wholesale to Western Municipal Water District. Basin Groundwater Levels Groundwater levels in the Bunker Hill, Rialto -Colton, and Riverside North basins are continuing to show a long-term declining trend, while groundwater levels in the Riverside South Basin remain relatively stable as shown in Figure 2. Groundwater levels in the Bunker Hill Basin reached their annual spring peak in March and since, have entered into their annual summer descent. Water levels in Bunker Hill are approximately 1 foot lower as compared to May of last year. Water levels in the Rialto -Colton and Riverside North basins are 6 and 25 feet lower as compared to May of last year, respectively. One of the likely reasons for the large May difference in the Riverside North Basin is due to the lack of rainfall and replenishing storm flows. By this time last year, the Riverside area had received approximately 12.3 inches of rain, while this water year; the Riverside area has only received about 3.9 inches of rain. The Riverside South Basin is approximately 3 feet lower as compared to May of last year. Page 376