| OCR Text |
Show and from their winter range along the Western base of the Wasatch Mountains, Elk migrations would also be affected by the Nephi- Sevier Canal. The magnitude of this adverse impact on big game populations has not been fully evaluated. Mitigation measures that would be taken are discussed in Section D. The usual temporary adverse impacts associated with construction activities would also occur. ( 4) Features Related to the Provo Bay Dike The proposed diking of Provo Bay and the subsequent reclamation of the land for agricultural purposes would require construction and operation of features to deliver irrigation water to the cultivated lands, to divert water from Hobble Creek around Provo Bay Dike, and to pump drain water into Utah Lake and from the lake into Provo Bay Canal. ( See Figure A- 25.) Under this plan about 6,800 acres of good quality land would be cultivated in Provo Bay and about 2,700 acres of land adjacent to the Bay would receive supplemental water. The Hobble Creek Diversion Dam and settling basin would be constructed about 5.0 miles upstream from Provo Bay in a section of stream rated as a Class III fishery. The Springville Bypass would divert flood flows from Hobble Creek a'bcve Springville into the Provo Bay Bypass. The Provo Bay Bypass would begin at Hobble Creek below Springville approximately 1.5 miles from Provo Bay. At this point all water from Hobble Creek would be removed and the bypass would serve as a new route for the creek. After joining the Springville Bypass, alinement would traverse the south side of Provo Bay Dike to a junction with the Spanish Fork River. The 1.5 miles of stream channel eliminated by the Provo Bay Bypass is classified as Class III fishery. Most of the 3.5- mile portion of stream between the bypass and Hobble Creek Diversion is of poor fishery quality and rated Class VIj however, a 1.0- mile reach, including the damsite, is of Class III quality. In total, about 2.5 miles of worthwhile fishery would be adversely affected. The settling basin on Hobble Creek would have a 1,800- acre- foot capacity and would be functional only during flood periods which are expected to 268 |
