11-13-2017 BPU RPT 12 - Laserfiche WebLink

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RIVERSIDE PUBLIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: NOVEMBER 13, 2017 GENERAL MANAGER’S REPORT ITEM NO:12 Riverside Public Utilities Drought and Conservation Efforts / Groundwater Level Update As of September2017 Conservation Efforts For the month of September2017, Riversideresident’s water conservationreached 14%. Cumulatively it is at 15%from June 2016 to September2017 (Figure 1). This translates to 14,763Acre-feet (4,811 million gallons)of potable water being conserved. On a Regional scale, Riverside resident’s water consumption; measured in gallons per capita per day (Residential-GPCD) is comparable to the aggregate consumption within the surrounding ten water agencies (Figure 2). RPU’s Residential-GPCD moved a little higher than the regional Residential-GPCDin the months of Maythrough September 2017, but it is at the same level regionally since January 2017with an average of 107. Basin Groundwater Levels Groundwater levels in the Bunker Hill, Riverside North, and Rialto-Colton basins are continuing to show a long-term, declining trend while groundwater levels in the Riverside South Basin remain stable (Figure 3). Groundwater levels in Bunker Hill and Riverside North basins are approaching their seasonal “low” and are expected to ease their seasonal decline as groundwater production begins to ramp down. The Bunker Hill Basin is about 6.6 feet lower compared to last year while the Riverside North Basin is about 1.2 feet lower compared to last year. The Rialto-Colton basin is 9.7 feet lower compared to last year however this is primarily due to an active production well influencing the water level measurement. Page 42