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Final report of Tasks A through C (Specific Geomorphologic Data <br />Collection and Analvsis) <br />4 <br />with all invPStinatinns (multi- disninlinary rommittPP). <br />Iv. Investigation of River Restoration Activities <br />Task Description <br />A. Initial, Small Pulse Flow Test <br />1 G.P.S. Survey along the North Platte and Platte River to establish <br />benchmark monuments for vertical and horizontal control. <br />2 Monitor river stage and discharge at every North Platte River bridge from <br />Keystone. NE to North Platte. NE. <br />3 Monitor river stage and discharge at every Platte River bridge from North <br />Platte. NE to Chapman. NE. <br />4 Monitor North Platte River stage at all segments where potential flooding is <br />a concern from Kevstone. NE to North Platte. NE. <br />5 Monitor Platte River stage at all segments where potential flooding is a <br />concern from North Platte. NE to Chapman. NE. <br />6 Calculate the safe channel capacity for all reaches of the North Platte and <br />Platte Rivers. <br />B. Testing of On -site Restoration Treatments <br />1 Select 4 of the 6 sediment study reaches between the J -2 return channel <br />and Chapman. NE. <br />2 Measure the initial channel bed, sandbar, and island topography at each <br />study site and the bed - material grain size distribution. Also, document age <br />and species of vegetation on sandbars and islands. Accomplished by <br />tackc I r. 1_R and 11 A d_Q <br />3 Develop a plan to clear and lower a total of 16 to 20 acres of river islands <br />river snnd. <br />4 Obtain all necessary permits for clearinq and lowerinq operations. <br />5 Clear vegetation from river islands, stock pile vegetation for burning, and <br />push island sand into the surrounding river channel. <br />6 Construct 2 woody debris piles in the river channel of each study site to <br />assist the river in buildina sandbars. <br />7 Measure the channel bed, sandbar, and remaining island topography at <br />each study site after the clearing and lower operations. Accomplished by <br />tackIC6 <br />A. -C. <br />A. -C. A. -B. D. -G. A. -E. <br />Tasks that need to be previously <br />completed <br />CA <br />C.1 -6 <br />1A.4-9 <br />A.1 <br />A.1 <br />A.1 <br />A.1 <br />A.1 -5 <br />B.1 -2 <br />B.1 -3 <br />B.1 -4 <br />B.1 -5 <br />B.1 -6 <br />