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,r'" ... '. ~ tJ\,....J.. .; OPERATION AND ;'IAINTENANCE 25 95,2!l2 acre-feet, For most of the year inflow to Lake Mathews was about one-half of a one-pump flow of 200 cubic feet per secoud, the other half being diverted to the San Diego aqueduct. Delivery of about three-quarters of a two pump flow of 400 cubic feet per second was received during slightly less than two months of the year. I Pipe lhte.'; a-nd I'e.sef'voiys The upper feeder. consisting of precast concrete pipe, steel pipe. tunuels, and cast-in-place concrete canyon crossings extends 61.2 miles from Lake Mathews to the Eagle Rock control tower on the westerly boundar;' of the City of Pasadena. The capacity of the upper feeder is 750 cubic feet per second to the San Dimas turnout and 510 cubic feet pcr second from that poiut to Eagle Rock. Near La Verne in Los Angeles County the flow of the upper feeder is diverted into the water softening and filtration plant where the water is softened and filtered, and returned to the upper feeder for distribution to District areas. The City of Pasadena b supplied from the Pasadena tlllll1el of the upper feeder through a riser pipe at Mountain Street and Manzanita A venue and through a second outlet near the easterly city boundary at Sierra Madre Villa Avenue. Two additional connections for Pasadena at West Drive in the Arroyo Seca and at the city's Hastings re~ervoir now under con- struction have not yet been used. A lateral to serve San Marino from the upper feeder was completed during the year, but connec- tion to the privately owned system supplying the city has not been made. There are at pre"ent three main branches extending from the upper feeder southerly _ and westerlLinto the InetropolitalLarea, _ - with laterals as required to carry water to the member agencies. The Orange County branch takes off from the upper feeder at the softening plant turnout structure and run~ in a southerly direction 40,3 miles to connect with the existing Laguna Beach main supply line near Corona del Mal', Direct connections are made from the Orange County line to the city s;'otems of Brea and Newport Beach, constituents of Coastal Municipal Water District. and to Fullerton, Anaheim and Santa Ana. Two reservoirs on this line, the Orange County and Corona del Mar. with capacities of 200 and 15 acre-feet, respectively. provide storage and flow regulation. The Palos Verdes branch !'Uns southerly and westerly from Eagle Rock tower 3l.1) miles to the Palos Verdes reservoir near the Los Angeles-Long Beach harbor area. Eleven connections, including a