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<br />CHAj?TER I <br /> <br />INTRODUCTION <br /> <br />Dam is a concrete ogee, gravity-type structure with overflow <br />section and wingwalls of concrete and embankments of compacted <br />earth at each end of the dam. The concrete headworks are <br />controlled by one 3-foot-squareslide gate, feeding the canal. The <br />sluiceway is controlled by a 6-foot-square radial gate. <br /> <br />The East Fork Feeder Canal, with a capacity of 30 cubic feet per <br />second, has a length of 1.3 miles. The first mile conveys water <br />from East Fork to Atkinson Creek; the water is then carried by the <br />stream channel for approximately 600 feet, where it is redirected <br />into the feeder canal. The water is then carried by the feeder <br />canal to its terminal drop structure, located at the east end of <br />Bonham Dam, for storage in Bonham Reservoir. <br /> <br />Bonham-Cottonwood Pipeline <br /> <br />The Bonham-cottonwood pipeline collects water from'small streams <br />and reservoirs in the watersheds of Big and Cottonwood Creeks and <br />delivers it to the Upper Molina penstock. The pipeline, consisting <br />of two main branches and several smaller feeder lines, delivers a <br />maximum of 50 cubic feet per second to the Upper Molina penstock. <br /> <br />The Bonham section, about 5.4 miles long, extends from Bonham <br />---"---- <br />Reservoir to the Upper Molina penstock. It consists of a 33-inch <br />pretensioned concrete pipe with a maximum capacity of 50 cubic feet <br />per second. A feeder line delivers water into this section from an <br />unnamed stream inlet west of Bonham Reservoir. <br /> <br />Extending about 3.7 miles from Cottonwood Reservoir No.1 to the <br />Upper Molina penstock is the Cottonwood section of the pipeline. <br />It receives water directly from Cottonwood NO.1, DeCamp, and Big <br />Meadows Reservoirs, as well as from three uncontrolled stream <br /> <br />9 <br />