Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . whichto use the water now available; however, the most economical pumpingis in the low area, and in case of overdevelopment of the undergroundwater the w^ells in the low area would be afiected last, so it is probablethat the low lands, except where the salt content is excessive, willalways be farmed. Location of Flood Channel. Two routes for a flood channel are worthy of consideration. Onewould be to continue the plan begun by the Indio Levee District by con-ducting the water no
Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . whichto use the water now available; however, the most economical pumpingis in the low area, and in case of overdevelopment of the undergroundwater the w^ells in the low area would be afiected last, so it is probablethat the low lands, except where the salt content is excessive, willalways be farmed. Location of Flood Channel. Two routes for a flood channel are worthy of consideration. Onewould be to continue the plan begun by the Indio Levee District by con-ducting the water north of Indio to the main natural channel throughthe valley northeast of Coachella and crossing the railroad at other would be to hold the water to the southwest side of the valleybelow Point Happy, allowing it to enter one of the natural channels inthe middle of the valley, towards Salton Sea. The advantages of the first-mentioned route are that it follows thelowest depression of the valley, and a natural, if inadequate, channel towhich most unconfined w^ater gravitates; that it should be easier to. Plate XII, Fig. 1 (upper).—Headgate below San Antonio Canyon near Claremont for waterconservation work of Pomona Valley Association. Fig. 2 (lower).—Head of gravel cone atmouth of Santa Ana Canyon January 22, 1916. Powerhouse is shown in distance. Bui. 4—(p. 28) FLOOD CONTROL IN COACHELLA VALLEY. 29 maintain than a channel on higher ground, and that it is well located toact as a drain for the improvement of the alkali lands. The disadvan-tages are that it is close to the towns of Indio, Coachella and Thermal,and to well improved lands, especially above Indio, that it crosses therailroad twice, and that it is not the most direct route. The advantages of the last-mentioned route are that it is more directthan by way of Indio and that it avoids proximity to the towns and therailroad. The disadvantages are that it would be more difficult tomaintain than the lower route
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