OCR Text |
Show - 22 - various crops from : Gatewood and others, (1950) ; Turville and Hitch, (1944) ; Ross and others, (1931) ; Marr, (1927). No data are available for the other basins but it is believed that the combined acreages of the other areas would be small in comparison with the five basins cited. The use by non-beneficial phreatophytes in all of the basins was given in Question VI as between 275,000 and 350,000 acre-feet. Question XII. For the last 10 years of record give in acre-feet the average amount of water that has wasted to the ocean. This question is interpreted to mean the amount of water flowing from the basin at Gillespie Dam other than diversions at the dam. In 1941 flow past the dam was unusually large owing to the heavy precipitation of that year. Flow in Gila River below Gillespie Dam was as follows: Year Acre-feet 1941 l,03G,000 1942 17,700 1943 14,170 1944 13,490 1945 7,380 194G 29,510 1947 12,650 1948 936 1949 10,500 1950 4,120 Average 1941-50 114,700 Average 1942-50 11,000 Question XIII. Give in acre-feet for the last 10 years of record the average annual mountain and foothill runoff. It is estimated that the average annual runoff from the |