Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . lifornia is at about 9,000 feet elevation. Gen-erally the northern slopes of the mountains are more heavily timberedthan the southern, but this does not hold true for Mt. San Jacintobecause its northern slope is of granite and so precipitous that treeshave little chance to take root. Pine timber grow^s on the upper slopesof the San Bernardinos and San Jacintos and the lower slopes aregenerally covered wdth brush corLsisting mainly of sumac, mountainmahogany, buckthorn or wdld li
Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . lifornia is at about 9,000 feet elevation. Gen-erally the northern slopes of the mountains are more heavily timberedthan the southern, but this does not hold true for Mt. San Jacintobecause its northern slope is of granite and so precipitous that treeshave little chance to take root. Pine timber grow^s on the upper slopesof the San Bernardinos and San Jacintos and the lower slopes aregenerally covered wdth brush corLsisting mainly of sumac, mountainmahogany, buckthorn or wdld lilac, and chamiso, commonly calledgreasewood. The growth on Santa Rosa Mountains is more sparse,while the eastern extension of the San Bernardinos is nearly barren ofchaparral. Precipitation. The only rainfall stations maintained by the United States WeatherBureau within the Whitewater drainage have been at Indio, PalmSprings and Salton in the valley, and at Cabazon in the mountain gage at Beaumont is nearly within the area while that at SevenOaks in San Bernardino Mountains and that at Idyllwild in San. Plate III, Fig. 1 (upper)—Tahquiz Creek at Palm Springs. This stream is one of the mostprecipitous in the United States, falling 1,030 feet per mile. Fig. 2 (lower).—Looking up White-water channel to Point Happy. Mount San Jacinto in the distance. Bui. 4—(p. 6) FLOOD CONTROL IN COACHELLA VALLEY. I Jacinto Mountains are a few miles over the divide on western slopesw^here the precipitation is greater than at the same elevation on theeastern slopes. The recorded seasonal rainfall in inches for thesestations is as follows:
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