Bulletin, Edição 6State Printing Office, 1923 |
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Palavras e frases frequentes
4th Bien Acres agricultural area agricultural lands alfalfa ance area irrigated Area of crops C. E. Tait Canal Canyon cent of annual cent of total County Creek Dept depth Loss depth on land drainage duty of water falfa Farms foothills Frank Adams GN M Measured Grain inches Inyo County irri Irrigation Company Irrigation Dist irrigation water June July Aug Kern River key letter Kings River locality under irrigation MEASURED ON VARIOUS Misc moisture Mutual Water Company Number Owens Valley P.ct Pit River plant Plate Precipitation station quantity unknown rainfall Ranch record Rice Sacramento Valley San Francisco San Joaquin River San Joaquin Valley Santa Ana River Section and key Sept soil System or locality SYSTEMS LISTED T. H. Means TABLE 8-(Continued Terra Bella VARIOUS SYSTEMS verted water Victor Valley Vines WATER AS MEASURED Water diverted water supply
Passagens conhecidas
Página 75 - ... drought from 1894 to 1904 proved that with careful cultivation crops, orchards, and vineyards could be maintained and made productive with as little as 6 inches of irrigation water applied directly to the plants during the year, the ground being thoroughly tilled and kept clean of weeds. During the water shortage of 1920 in the Sacramento Valley, when there were 215,000 acres under irrigation from the main channel of the Sacramento River, many being planted in rice, the amount of water was decreased...
Página 12 - Here one-tenth of the total agricultural lands of the state lies west of the crest of the mountain range that separates the Pacific Coastal plains from the desert, and one-tenth lies on the eastern side of this dividing range and principally in Imperial, Antelope and Victor valleys; along the eastern border of the state, east of the Sierra Nevada Mountains, one-fortieth lies in the...
Página 37 - The growing season extends" practically throughout the year, though some agricultural plants are more or less dormant during the months of December and January. The standard crops are alfalfa, corn, grain, cotton, melons, vegetables and grapes, with some citrus and deciduous fruits. The date industry has become prominent in Coachella Valley and in the northern part of the Imperial Valley. Coachella Valley and Palo Verde Valley are each served by one transcontinental railroad. Imperial Valley has...
Página 75 - In other sections of the Sacramento Valley, where the 1920 water shortage was even more acute, the use was decreased over 50 per cent without damage to fruits and cultivated crops and with little permanent damage to alfalfa. Experiments were carried on by Dr. Loughridge of the University of California on citrus orchards in southern California and it was determined that about 3 inches of irrigation for clay loam soil and 4 inches for sandy loam soil, applied at intervals of 60 days during the irrigation...
Página 19 - ... of territory, one-fifth of the total area of the state, which receives less than 5 inches of rainfall per annum. To the north and along the eastern border of the state, the mountain valleys lying east of the Sierra Nevadas and south of Lake Tahoe, have a mean precipitation of from 5 to 25 inches ; those north of Lake Tahoe and on the mountain plateaus east of Mount Shasta, receive from 10 to 20 inches per year. Along the western border of the state, on the Pacific slope of the Coast Range Mountains,...
Página 19 - Flow in California Streams." Bui. No. 5, State Department of Public Works. varies from 1 to 100 inches in depth over the state, this great valley in the center of the state, containing the bulk of California's agricultural land, receives 15 to 25 inches in the north half, and the south half receives only 5 to 15 inches. South of Tehachapi Pass, the southern California coastal valley«, lying to the west of the dividing range, have a rainfall of from !) to 15 inches a year.
Página 18 - This iisohyetoae map shows the general tendency toward greater precipitation in the higher mountain regions where a depth of more than 70 inches is reached near the northern summits of the Coast Range. The elevated peaks and tablelands of the western slope of the Sierra Nevada Mountains receive a mean precipitation of from 50 to 90 inches compared to depths of from 5 to 25 inches occurring in the valley between the two ranges. It is also discernible on this map that the rainfall over the extensive...
Página 19 - This table shows that the average rainfall for the thirty-eight years covered by it is 17.70 inches, which is the quantity of water that should be expected to fall in any one year. But the precipitation actually ocYear Joly Aug.
Página 14 - II cultivation.2 These comprise practically all the agricultural area with sufficient natural moisture to mature a profitable crop, together with some additional land having inadequate natural moisture, but for which accessory supplies were developed economically. In the northern part dry farming is successfully practiced and irrigation is of value chiefly in order to insure a better crop or a different class of products. But in the southern portion the ability to obtain a water supply is the conditioning...
Página 19 - ... to 15 inches a year. On the eastern side of this mountain range, dividing the coastal plains from the desert, lies a great expanse of territory, one-fifth of the total area of the state, which receives less than 5 inches of rainfall per annum. To the north and along the eastern border of the state, the mountain valleys lying east of the Sierra Nevadas and south of Lake Tahoe, have a mean precipitation of from 5 to 25 inches ; those north of Lake Tahoe and on the mountain plateaus east of Mount...