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V ? r \ v 0 P Y Los Angeles, Cal., July 29,192? 20-6 Mr. F*H. Knickerbocker: Regarding the water facilities at Lae Vegas,Nevada, eulgeot of your file 9215-355: Work Order 7393 ©oyer* the construction of a 12-inch cast iron water pipe line from Little Spring to settling basin,which, When recommended, would hare made available a total direct flow of approximately 3,200 gallons per minute, consisting of the flow from Artesian Well, 1,530 gallons per minute: Big Spring, 1,010 gallons per minute and Little Spring, 660 gallons per minute. X understand that the^Artesian Well has decreased to such an extent that only 1,175 gallons per minute are at present available, making available a total direct flow at the present time of 2,845 gallons per minute. Middle Spring is lower in elevation than the above-mentioned sources and, therefore, its flow of approximately 350 gallons per minute can not be made available without a loss in head. There is a further loss of approximately 260 gallons per minute coming up outside of the well- casing, which probably can not be diverted into the pipe line, econ­omically* The 610 gallons per minute is not an actual loss, except during winter months, as it may b© used on the Company1 s ranch for irrigating purposes, but, as mentioned above, this water can not be made available for Railroad or City use without lowering the head on the main pip© line, which is not desirable, or installing a pump to overcome the difference in elevation. On account of having no storage facilities, we can enjoy the use of the 2,845 to 3,200 gallons per minute, direct flow, only when it is used as rapidly as it flows from the source. Iheh this water is not used, it overflows from the settling basin into Las Vegas Creek and*may be used for irrigating purposes. during.periods of hot weather the consumption by the City of las Vegas, the Pacific .Fruit ibsprees Company and the Railroad Company is enormous, and when con­sideration is given to supplying the Hotel Company with approximately 550 gallons per minute in addition to serving Old Town through a new 6-inch pipe line as proposed by the L*V* L & W.Co., together with the normal growth of Las Vegas and the Railroad facilities, it appears to me that serious consideration should now be given to the construc­tion of a reservoir in order that during periods of relatively small use, such as between Midnight and 6:00 AM the direct flow may be stored for use during the peak-period between 3.00 PM and 9:00 PM. The total flow from the Well, including the water need and that wasted, in July 1924 was found to be 3,644 gallons per minute, this decreased by March 1927 to 1,876 gallons per minute and on May 12th was found to be 1,647 gallons per minute, while on June 10th the flow was only 1,435 gallons per minute. A considerable part of the decrease may be due to seasonal variation in flow and annual sanding, although the history of practically all the artesian wells in this belt indicates that the flow ia general is decreasing. &