Record Details
page 4-19
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 4-19 Diamond Fork System Final Supplement to the Final Environmental Impact Statement, page 4-19 |
| Coverage | Electronic reproduction; |
| Format | 4-19 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; comment letter no 10 collected for diamond fork identifies that the processes maintaining the existing habitat ie the lateral instability would be maintained under the proposed action as the duration of flows above the effective discharge would continue and therefore there would be no change in the processes maintaining the ute ladies tresses habitat along diamond fork while the EIS states that there are no accepted methods for identifying ute ladies tresses impacts there are accepted methods for evaluating changes in floodplain flood plain morphology that are being used by geomorphologists along the green river and elsewhere to evaluate how changes in flows affect floodplain flood plain building and erosion rates and processes RESPONSE 10.18 1018 please see comment response 10.17 1017 and the revised analysis in chapter 3 section 376421 37642.1 376421 375421 the revised analysis attempts to integrate the change inflow regime over the entire growing season rather than using a static point in time this analysis does identify potential effects on the species in the system under the proposed action and the no action alternative conservation measures from the draft biological opinion are located in chapter 3 section 3.2 32 32 33 3206 320.6 3206 0.6 06 06 og and appendix B of the FSFEIS FS FEIS COMMENT 10.19 1019 6 the purposes of the conservation measures are unclear basically the conservation measures propose monitoring instead of completing an impact analysis in the EIS if the conservation measures really are a monitoring program then this needs to be clearly stated the monitoring program also needs to have clearly defined objectives identification of the questions to be answered and identification of the point at which the monitoring indicates a necessary change in the flow regime As written the program consists of a lot of data collection but with no central purpose the utility of mapping the ute ladies tresses on aerial photography as a conservation measure is unclear as this mapping was done in 1996 199 6 on 1 112000 12000 aerial photographs if monitoring is to be accepted as the conservation program I 1 suggest that the program focus on the recovery plan goals that of process maintenance habitat formation and erosion processes appear to be central to the entire diamond fork restoration for both cottonwoods cotton woods and ute ladies tresses there has been substantial data collected by the USFS regarding channel migration patterns and sediment transport rates that should be used to evaluate the current role of geomorphic processes and how they might change under the proposed action such work is also being done along the green river by utah state university geomorphologists and could be expanded to diamond fork I 1 suggest that all geomorphic process evaluation be conducted by a geomorphologist morphologist geo or process oriented hydrologist RESPONSE 10.19 1019 conservation measures identified in the FWS draft biological opinion are located in chapter 3 section 320.6 3206 3206 and appendix B of the FSFEIS FS FEIS in 1996 ULT mapping was preparedor preparedfor prepa redor redfor the forest service campground improvement project this area was very limited in comparison to the total distribution of this species in the can canyon y on additionally diamond fork creek is a dynamic system sediment transport is active moving the location of bars banks and even entireriver entire river coursesfi courses prom from om one year to the next estimating the location of colonies on these geomorphic surfaces that no longer exist presents serious difficulties in analyzing the population dynamics of the species and the subsequent impact analysis for example A colony is identified on a midstream mid stream point bar by the presence of flowering offlowering individuals one year the following year the sedimentfrom sediment prom from that bar has been removed and deposited redeposited re immediately downstream creating a visually similarfeature similar feature if the analyst only had out ont outdated datedphotos dated photos or maps the new point bar may mistakenly be identified as the same point bar in the first years survey because of close proximity of this new point bar therefore it would be assumed that if there are no nonflowering flowering noflowering individuals identified in subsequent years at this new location that this colony had been severely affected by some outside factor in reality a efferent different &fferent surface is being surveyed and the surface on which the colony had 419 4 19 diamond fork system FSFEIS FS FEIS |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/8904 |
