Laserfiche WebLink
bars of varied dimensions, how do current bar dimensions and distributions compare to "preferred" dimensions and distributions, how are the desired and actual bar properties related to <br />reference base flow and nestina- season hiah flow events. what chances in these dimensions aDoear to be occurrina. and what is the basis for the required dimensions and distributions? <br />What active and /or unobstructed channel width could exist and be maintained by current -day flow and sediment regimes if vegetation was artificially removed in sufficient quantities of some <br />reaches to re- activate uninhibited bar - building and braiding processes? <br />What are the correct, relevant definitions of active, unvegetated and unobstructed widths (or areas) that are appropriate for use in this trend analyses? <br />What data need to be reviewed, synthesized, and /or collected to establish or confirm current trends in active or unobstructed width (or area) and to monitor changes in this variable <br />over the foreseeable future? <br />What changes are anticipated in the sand budget and channel morphology under potential sand augmentation scenarios? <br />To what extent do acceptable sand bars exist by bridge /reach segment in the Lexington to Chapman reach? <br />How is the Kearney Diversion affecting the river channel, and can the factors causing relatively good habitat in this area be extrapolated to other portions of the river? <br />What role does channel bed degradation /incision play under current conditions in affecting vegetation and unobstructed width? <br />What is the sand (bed material load) budget of the Central Platte River and how does it affect the channel degradation and narrowing processes? If the river channel is only half of its pre - <br />development size (area), can its bed level be maintained by only half of its pre - development transport of sand? <br />What effect does coarsening of the riverbed have on the dynamics of channel geometry changes and vegetation? <br />What consequences would reduced winter flows have on channel geometry and vegetation? <br />What level of drought (frequency and magnitude) would need to occur to reduce the environmental account water to the point that vegetation significantly recolonizes cleared areas of the <br />channel? <br />Is the lateral erosion process or the vertical erosion process more dominant in removing vegetation? <br />