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Show -14- The above tables show that the frost-free growing season at Parker is 258 days, average annual precipitation 5.08 inches. The latest killing frost of record was on April 12, and earliest on October 16. At Parker, for the 26-year period, 1917 to 1942, inclusive, the approximate number of hours of sunshine is listed below: Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Total 227 213 285 308 275 388 339 328 324 289 244 212" 3^512 Wind Velocities The nearest record is at Yuma where the average is 5.2, average maximum 28.2, and extreme maximum, 44 miles per hour. Evaporation At the Yuma Citrus Station on the mesa, the average was 121.4 inches per year; maximum 17.35 inches in July. At the Yuma Evaporation Station, the average was 76.36 inches per year, with a maximum of 10.19 inches in July. Humidity At Yuma, the averages were 61 at 6:00 a.m., 26 at noon, and 27 at 6:00 p.m. The elevation of the bottomlands varies from 270 feet at the southern boundary to 360 feet at the old pumping plant. The elevation of Monument Peak is 2,446 feet and Black Mountain is 1,656 feet. Along the eastern side the Moon Mountains rise to about 1,300 feet in the south-central part. The LaPaz Mountains, in the southern part, are about the same elevation. The Riverside Mountains, on the west boundary, are about 1,800 feet. |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : |