View File - Development Services - City of Oxnard

WATER RESOURCES TECHNICAL REPORTsource of water to the Ocean View pipeline is groundwater delivered by the O-H pipeline.The quality of water would be similar to that as shown in Table 3-1 for UWCD groundwaterquality from the City of Oxnard 2000 Consumer Confidence Report. On average, the TDS ofthis water would be approximately 1,100 mg/L. UWCD holds FCGMA pumping allocationsin trust for OVMWD, which are shown below.FCGMA Groundwater Allocation for OVMWDAvailable Groundwater, AFYGroundwater Source Historical Allocation 2000 – 2004 2005 – 2009 2010UWCD suballocation 600 600 600 6003.1.7 AgricultureIrrigation water for agricultural use on the southern Oxnard Plain and Pleasant Valley areasis supplied by several sources, including private groundwater wells operated by farmers,water provided by the UWCD PTP system, water provided by the PVCWD system, theOVMWD Ocean View pipeline, and water provided by other local special districts.Agricultural irrigation supplies and land use are described below for the PTP, PVCWD, andOVMWD systems, which would be integrated into the GREAT Program to deliver recycledwater to growers in lieu of pumping groundwater. In addition, land use is described in thevicinity of the Duck Club because this area represents another opportunity to providerecycled water for agricultural use in lieu of pumping groundwater.Pumping-trough PipelineUWCD built and operates the PTP to deliver water to agricultural users on the Oxnard Plainin lieu of pumping their shallow groundwater. The PTP delivers surface water divertedfrom the Santa Clara River when it is available. When there is insufficient surface wateravailable, five wells along the PTP system pump groundwater from the LAS. Figure 3-5shows the crop types and pumping by PTP users. The PTP users are strictly agriculturalirrigators and supplement the UWCD supply with groundwater from their own wellsduring peak periods. The quality of surface water delivered through the PTP reflects thewater quality of Santa Clara River diversions (Figure 3-4). The quality of pumpedgroundwater is variable with individual well (Figure 2-21).Pleasant Valley County Water DistrictThe PVCWD serves agricultural interests to the east of the PTP service area. PVCWD usesboth groundwater and surface water to supply its customers. Surface water is provided byto PVCWD by UWCD from the Santa Clara River when it is available. Eleven wells alongthe PVCWD system pump groundwater from the LAS. Figure 3-6 shows the crop types andpumping by PVCWD users. As with the PTP, the PVCWD users are strictly agriculturalirrigators and supplement the PVCWD supply with groundwater from their own wellsduring peak demands. The quality of surface water delivered through the PTP reflects thewater quality of Santa Clara River diversions (Figure 3-4). The quality of pumpedgroundwater is variable with individual well (Figure 2-21).W112003002SCO LW1458.DOC/ 033390002 38