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RIVERSIDE PUBLIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: FEBRUARY 12, 2018 GENERAL MANAGER’S REPORT ITEM NO:15 Riverside Public Utilities Drought and Conservation Efforts / Groundwater Level Update As of December2017 Conservation Efforts For the month of December2017, Riverside resident’s water conservation went down by 16% as compared to December 2013 (4,320 acre-feet (AF) of urban water production in December 2013 vs 5,024 AF in December 2017). Cumulatively RPUis at 12%reduction from June 2016 throughDecember2017 as shown in Figure 1. This translates to 13,851AF(4,513million gallons) of potable water being conserved. For the 2017calendar year, RPU’s urban water production was 64,154 AF. This is an increase from last year by almost 5,000 Acre-feetor about 8%. Despite this year’s increase in urban water production, RPU’s production is still within the historical production range from2013to 2016as shown in Figure 2. Figure 2 also shows that RPU’surban water production is below the compliance target specified in SB X7-7(i.e. 20% reduction by 2020) andRPU’s currentpotable water rights. 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 3. Groundwater levels in the Bunker Hill Basin are continuing to rebound from summer pumping; however, water levels remain approximately 16.7 feet lower as compared to December of last year. Water levels in the Rialto-Colton and Riverside North basins are 5.3 and 15.9 feet lower as compared to December of last year, respectively. In addition, water levels in the Riverside North basin are 6 feet lower this month as compared to November, likely resulting from the lack of rainfall and replenishing storm flows. The Riverside South basin is 1.9 feet lower as compared to December of last year. Page 110