Record Details
page 4-88
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 4-88 Diamond Fork System Final Supplement to the Final Environmental Impact Statement, page 4-88 |
| Coverage | Electronic reproduction; |
| Format | 4-88 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; connnent Conn nent letter no 19 RESPONSE 19.50 1950 please see comment response 19.48 1948 COMMENT 19.51 1951 37512.2 375122 375122 this section should include a discussion on what the limiting factors are for the leatherside chub and their interaction with salmonids salmon ids this is important with the increasing trout biomass discussed in the aquatic resources section RESPONSE 19.51 1951 A discussion of leatherside chub and brown trout interactions is included in chapter 3 section 37642.2 376422 376422 of the FSFEIS COMMENT 19.52 1952 37512.24 3751224 3751224 what is the current population of leatherside chub in the diamond fork creek based on the 1996 sample in 1993 the DEIS states that 162 leatherside chub were found in diamond fork creek in section 37633.2 376332 376332 it states that should a reduction of leatherside chub be significant flows and channel configuration could be managed to maintain necessary habitat please determine the population level which would constitute a significant reduction RESPONSE 19.52 1952 the objectives of the 1996 surve survey y ofdiamond of diamond fork creek leatherside chub population were 1 to examine the distribution and habitat use of leatherside chub liila gila copei in a creek with high densities of predatory brown trout laimo salmo saemo trutta and 2 to compare results of this study with published accounts of leatherside chub habitat use in streams with few or no brown trout A total of 872 leatherside chub were found in 72 of 393 183 18.3 183 percent lateral habitats backwaters cutoff cut offpools off pools walser et at al 1997 however how every since it was not includedas included include das as an objective of the study no population estimate was developed the significance criteria developed developedfor jor for leatherside chub were identified in the draft special status species technical reportfor report for ror the spanish fork canyon nephi irrigation system draft EIS CUWCD 1998d 199 ad 8d since a population estimate for the leatherside chubpopulation chub population in diamond fork creek was and still is not available determining the significance of impacts based on the size of the population was is not notpossible possible impact analysis was based on habitat loss predation by brown trout and temperature see chapter 3 section 37642.2 376422 376422 leatherside chub currently use lateral habitats in diamond fork creek most likely to avoid predation by brown trout under the proposed action there would be a reduction in actively braiding channels over time however an unknown quantity of cutoff cut offpools off pools and spring fed backwaters would continue to exist and support a possibly reduced level of the existing population of leatherside chub the significance criteriafor criteria for leatherside chub state that a direct or indirect loss of greater than 5 percent of the physical habitat available to the species 11 would constitute a significant impact because of the presence of brown trout it appears that leatherside chub currently occupy suboptimal habitats in diamond fork creek based on IFIM analysis optimum habitatfor habitat for jor leatherside chub would increase under the proposed action however since leatherside chub do not occur within their optimum habitat in diamond fork creek an IFIM analysis does not adequately describe the potential impacts on leatherside chub that are associated with brown trout predation data are diamond fork system FSFEIS FS FEIS 488 4 88 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/8985 |
