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21 <br />Veqetation Dynamics Trends <br />methodoloov <br />Analysis of available aerial photos (unobstructed width, unvegetated width, <br />other) by width class and bridae seoment <br />Interaction <br />conference <br />III. Comprehensive Geomorphic Assessment from Lexington <br />to Chapman, Nebraska <br />Task Description <br />A. Develop Geomorphic Assessment Work Plan <br />1 Orqanize appropriate committee to lead qeomorphic assessment <br />2 Contract with consultants to participate in geomorphic assessment <br />3 Compile bibliography of all relevant qeomorphic data and coveraqes <br />4 Collect, review existing aerial photos and existing GIS coverages including <br />COHYST <br />5 Evaluate existing geomorphic data regarding channel characteristics and <br />slopes <br />6 Identify key qaps in qeomorphic data and plan new data collection <br />8 Pre -plan appropriate classification system for characterizing the Platte's <br />morpholoov <br />9 Revise geomorphic data collection plan <br />10 Pre -plan field work (equipment, access, scheduling, dataforms, etc.) <br />11 Determine specific locations for field inspection <br />12 Negotiate agreements for access, monumentation, helicopter, use of <br />airboat. etc. <br />Neqotiate contract for Lidar imagery, assume 90 miles of survey <br />Interim report - "Geomorphic Data Collection and Analysis Plan" <br />B. Basic Geomorphic Data Collection (including Field Data) <br />1 Compile all previous width measurements, includinq Carter Johnson <br />2 Compile, categorize and RATE all existing planform and other geographic <br />data. measurements and coveraaes <br />3 Scan, reqister, cateqorize, and RATE all unscanned imagery of river <br />41 Field verify qeomorphic nuances identifed from existinq geographic <br />13.1 <br />A.4 <br />Tasks that need to be previously <br />completed <br />IC.3 <br />A.1 -9, <br />13.4 <br />A.10 <br />A.11 <br />A.9, DA <br />A.9, DA <br />A.1 -14 <br />F— AMIS:M <br />lAMOM <br />