WSP05566 - Laserfiche WebLink

Home Browse Search

SU1lS'I'ANTIATING MATERIAtS The study was based on streamfloW's that prevailed over the period 1941 through 1957. Water rights that are prior in time to those of the proj- ect extension were l1bera.Uy appraised and :f'ully supplied in determining the supply remaining for the extension. The results of the study are shown in the operation table on the following page. In the l7.;.year per- iod the extension lands would ):lave eJl;perienced water shortages in only 2 years--20 percent of requirements in 1951 and 2 percent in 1954. Water available to the project would be of excellent quality and suitable for sustained irrigation use. Since the water supply avail- able to the project extension :j.s satisfactory in both quantity and qual- ity, it ili not So factor leading to the unfavorable f'ind;tngs of this report and therefore the resuJ.ts of the water supply studies are reported only briefly. Project lands A detailed land classification survey was made in 1956 and 1957 of all nonirrigated lands that coul.d be served by the enlargement and exten- sion of the King Consolidated Canal. A ......" area of irrigated land was also classified to provide data for comparisons. The classification was not l~ted to the 6,420 acres ;plAn"ed to be served from the K~ng Con- solidated Canal in the original pJ.an for the Pine Ri.ver project exten- sion, but in an effort to find a' feasible project a total of 21,900 acres was classified. The lands were intended to be segregated into five classes accord. ing to their soil, topographic, and drainage characteristics. No class 1 land was found, however. Specifications for each class are tabulated on page 12, and general descriptions of each class fOllow. Class l.--C.lass 1 lands are highly suitable for irrigation tarm- ing, being capable of prodUCing sustained and relatively high yields of a wide range of climatically adapted crops at reason- able cost. Class 2. --Class 2 lands have mediUlll-textured soils with sJ.ightly retarcted permeability rates in one or more horizons or have rela. 'tively'-"'IvI11ow depths to shale. The areas have an undulating ter- rain with frequent' interruptions in the general gradient and direction of s.lope, which limits the length of irrigation runs and requires special care and greater C06tS to irrigate the land without eros:ton.. Usually limited deficiencies in both soil and topograpby are present in this class.C Class 3.--The deficiencies in class 3 land are greater than in class 2 but are usua.Uy in the saIl1e items. The soil deficiencies include fine texture, slow permeability rates, and shallowness to shale. The high colloidal content and high shrinkage ratio of these ' 10