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1425 256 METROPOLITAN WATER DISTRICT and protection against interruption of flow are to be effected at Cajalco and Morris reservoirs and at a few small operative reser- voirs situated near the ends of the lines. All of the distributing lines will operate under pressure. The distribution system head works consist of an outlet manifold with regulating valves at the end of the Cajalco outlet tunnel, a small forebay, and a forebay outlet structure serving the upper feeder, with provision for a connection to a lower feeder planned to extend at some later date westerly from Cajalco. Bids were opened March 15, 1938 for this work. A contract was awarded to The Contracting Engineers Co., of Los Angeles, low bidder. and construction is under way. The upper feeder, which is now practically completed, has a ca- pacity of 750 cubic feet per second between Cajalco and San Dimas and 510 cubic feet per second between San Dimas and Glendale. A take-out for a future auxiliary line to the central portion of Los Angeles is located in the vicinity of San Dimas. The upper feeder consists of 10.3 miles of welded steel-plate pipe with diameters varying from 9 feet 8 inches to 11 feet 6 inches; 35.7 miles of pre- cast concrete pipe with diameters varying between 9 feet 8 inches and 12 feet 8 inches; 0.3 mile of 10-foot and 7-foot cast-in-place concrete siphons; and 15.7 miles of circular pressure tunnels, most of which are 10 feet in diameter. The line extends northerly from the head works at Cajalco to a point near Fontana and thence in a northwesterly direction through Cucamonga, Ontario, Pomona, San Dimas, and Glendora, a total of 41.6 miles to the east portal of the Monrovia No.1 tunnel, this portion consisting of welded steel and precast concrete pipe. From the east portal of Monrovia No.1 tunnel to Glendale, a distance of 20.4 miles, the line passes through or along the base of the San Gabriel range and beneath the streets of Sierra Madre and Pasa- dena and consists of a series of concrete-lined pressure tunnels, alternating with stretches of either precast or cast-in-place con- crete pipe, Three major spillway structures have been built at drainage channels crossing the feeder; viz., a needle valve at the Santa Ana River and overflow spillways at the Puddingstone flood control channel near San Dimas and on the westerly side of the Arroyo Seco. Most of the pipe line portion of the upper feeder traverses thickly settled areas where right of way was expensive and nu- merous improvements were encountered. Where possible, economy