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1:':) ."") ~ c:.::> D. PACIFIC COAST AREAS All Colorado River water used in the coastal areas Is pumped through the Colorado aquaduct of the Metropolitan Hater District of Southern California (MWO). The water Is distributed to the 27 members of the MWD. These members further distribute water to smaller divisions within their boundaries. The San Diego County Hater ~uthority, for example, Is one of the 27 members of MWD and has 22 constitutent cities and districts within Its boundaries, Burzel1 (1973), Monroe (1972). In addition to the water from the MWD the 27 members have locally developed water which presently constitutes 63% of the water used in the l~WD area, Monroe (1972). The local water Is pumped from subsurface aquifers, transported from outside the MWD area, and/or collected in reservoirs from surface or stream flow, Brown (1974). Rainfall wHhln the coastal area varies from 5 to 20 Inches In the Icwol' e1evations and from 20 to 70 Inches In the higher elevations, Close, et al. (1970). Most of the agricultural areas are within a 10 to 15 Inch rainfall zone, Boroman (1973). Agricultural yield records do not segregate crop yields obtained from local water irrigation and from Colorado River water Irrigation, Little (1968-73). In some areas the locally produced water is used fl rst and then Colorado River water Is used. In other areas the local and Colorado River water are stored In the same reservoir, Brown (1974). " w In 1972 the MWD took first delivery of water from the state project. This source of water Is scheduled to increase eventually to two million acre feet. In the meanwhile, the Central Arizona Project will claim an entitlement to Colorado River water so that the MWD supply will be reduced to 550,000 acre feet. Of this amount 100,000 acre feet may be utilized In the production of power. The remainIng water wi II be b.J.ended in varying degrees with local and state water, Clinton (1973), Lauten (1974). The prit:- Ing of water rates is set by the MWD. The agencies and subagencies add suitable Increases in this water price to cover operation, maintenance, and repayment scheduling of bonds for the distribution systems. Typical costs of water to the farmer are shown in table 45 for portions of the San Diego County Water Authority. Use of Colorado River water for acre feet per year, Monroe quantity are the San Oiego (1972) . County agriculture The agencies Water Authority has remained around 150,000 using this water in large 73,117 acre feet in 1972, 45