03-12-2018 BPU RPT 15 - Laserfiche WebLink

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RIVERSIDE PUBLIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: MARCH 12, 2018 GENERAL MANAGER’S REPORT ITEM NO:15 Summary of Riverside Public Utilities Urban Water Production and Conservation Efforts / Groundwater Level UpdateAs ofJanuary 2018 Conservation Efforts RPU’s urban water production in January 2018 was 4,217AF. This is an increase from last January by 1,430Acre-feetor about 50%. Despite this month’s increase in urban water productionas compared to last January,RPUis still within the historical production range from 2013to2017as shown in Figure 1.Figure 1also shows that RPU’sprojected annual urban water production in 2018 is 66,800 AF which is below the compliance target specified in SB X7- 7(i.e. 20% reduction by 2020). The projections for the2018 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 belowRPU’s current potablerights, which potentially can maximize RPU’s passive assetsby 5,200 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 are continuing to rebound from summer pumping; however, water levels remain approximately 15.4 feet lower as compared to December of last year. Water levels in the Rialto-Colton and Riverside North basins are 3.6 and 27.4 feet lower as compared to January of last year, respectively. One of the likely reason for the large January 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 9.9 inches of rain, while this water year; the Riverside area has only received about 1.7 inches of rain.The Riverside South basin is 2.3 feet lower as compared to January of last year. Page 106