OCR Text |
Show lands can he cultivated; canals to deliver irrigation water to the lands; and Hobble Creek Diversion Dam and Springville and Provo Bay Bypasses to carry Hobble Creek water around the dike. Pumping plants would be required to pump drain water into the lake and to pump water from the lake into Provo Bay Canal for irrigation use in the bay area. Under this plan about 6,800 acres of land could be reclaimed for agricultural production in Provo Bay, and about 2,700 acres adjacent to the bay could be provided a supplemental water supply. This development would be a carefully integrated plan and would include kQ farm units with homes and farmsteads that would average about 1^ 0 acres each. However, to sustain agricultural production, both an irrigation and a drainage system would have to be provided. The drainage system would maintain the water table at depths to permit sustained production of deep- rooted crops. It would consist of a network of open- outlet- collector and open- lateral drains which would serve as an outlet for a system of closed subsurface tile drains. The irrigation and drainage systems, with the exception of the closed tile drains, and proposed major access roads to the farm units are shown in Figure A- 25. The drainage system would include about 65 miles of closed- tile subsurface drains, about 22 miles of open lateral drains, and about 11 miles of open main outlet collector drains. The open lateral collector drains and the open main outlet collector drains would receive all surface runoff resulting from storms and irrigation waste in addition to all perimeter inflow to the bay. The access roads built parallel to the open drains would become part of the county road system and would provide ready access to the existing county roads surrounding the bay. To minimize the area taken out of production for right- of- way purposes, the project irrigation system would also be built adjacent to and parallel to the open lateral drains and roads. The project irrigation distribution system would provide an outlet on the high point of each farm unit. ( a) Provo Bay Drains Pumping Plants The Provo Bay Drains Pumping Plant would lift surface and subsurface drainage water from Provo Bay through the Provo Bay Dike into Utah Lake. The pumping plant would be located southwest of Provo along the Provo Bay Canal near the southwest corner of the Provo Bay area. ( Physical data on the plant are given in Table A- 6.) 84 |