Laserfiche WebLink
<br />50272 -J 01 <br />REPORT DOCUMENTATION .1~REPORT NO. 2. <br />PAGE FWSjOBS-80 13 <br />4.TitleandSubtitle Effects of Alterations to Low Gradient Reaches <br />of Utah Streams: Summary <br /> <br />3. Recipient's Accession No. <br /> <br />5. Report Date <br /> <br />April 1980 <br /> <br />6. <br /> <br />7. Author(s) <br /> <br />8. Performing Organization Rept. No. <br /> <br /> <br />9. Performing Organization Name and Address <br /> <br />10. Project/Task/Work Unit No. <br /> <br />Utah Cooperative Fishery Research Unit <br />Department of Wildlife Science <br />Utah State University <br />Logan, Utah 84322 <br /> <br />11. Contract(C) or Grant(G) No.. <br /> <br />ec) 14-16-008-1141 <br /> <br />(G) <br /> <br />12. ',;Sponsoring Organization Name and Address 13. Type of Report & Period Covered <br /> <br />Eastern Energy and Land Use Team <br />Office of Biological Services, U. S. Department of the Interior <br />Route 3, Box 44 14. <br /> <br />15. Supplementary Notes <br /> <br /> <br />.16. Abstract (Limit: 200 words) <br /> <br />Stream channels in the semi-arid intermountain west have been modified for many years by <br />agricultural interests, primarily to provide floOd-protection. Little infonnation has <br />been available on the long-term physical and biological consequences of channel modifi- <br />cation in this geographic region. Of special concern is the relationship between stream <br />channel modification and the high value fishery resource. This report describes an <br />investigation of the effects of stream channelization on fish and macroinvertebrates <br />in low gradient reaches of Blacksmith Fork River and the Logan River in the floodplain <br />of Cache Valley in northern Utah. Channelization adversely affected both fish and macro- <br />invertebrate populations and biomass, with the severity of impact directly related to <br />the amount and duration of disturbance of the physical habitat. <br /> <br />17. Document Analysis a. Descriptors <br /> <br />Fisheries, Stream Improvement, Streambeds, Dredging, Freshwater Fish, Fish Populations, <br />Aquatic Environment, Fish Food Organisms, Invertebrates, Channel Morphology <br /> <br />b. Identlfiers/Open.Ended Terms <br />Channelization, Brown trout, Mountain Whitefish, Logan River, Blacksmith Fork River, <br />Cache Valley, Utah, Trout <br /> <br />c. COSATI Field/Group <br />18. Avellabllity Statement <br /> <br />57H, 57Z, 48B <br /> <br />19. Security Class (This Report) <br /> <br />21. No. of Pag.s <br />7+covers <br /> <br />Release unlimited <br /> <br /> <br />20. Security Class (This Page) <br />unclassified <br /> <br />22. Price <br /> <br />13 <br /> <br />OPTIONAL FORM 272 (4-7n <br />(Formerly NTIs-35) <br />Department of Commerce <br /> <br />(See ANSI-Z39.18) <br /> <br />U.S. ffiVERNMENr PRINrING OmCE : 1980 0 - 328-608 <br />