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Lower Amazon Floodplain Analysis, Phase 2b <br /> FLOODPLAIN AND FLOODWAY MAPPING <br /> This task will prepare final FIS formatted flood profiles and floodplain and floodway boundaries <br /> using the results of the hydraulic modeling. The process will develop GIS map layers for <br /> submittal to the City for review prior to submitting to FEMA as part of the FIS package. <br /> Map Cross Sections. PWR will map the cross section locations as a GIS line map layer and <br /> attribute with appropriate data such as flow and profile elevation. <br /> Map Floodplain Boundaries. PWR will map the 100-year and the 500-year floodplain <br /> boundaries using automated mapping tools and will develop GIS polygon map layers of for each. <br /> Floodplain widths shall be consistent with modeled widths at each RAS cross section, as required <br /> by FEMA. Boundaries will be polygons and will be appropriately attributed for use within the <br /> City and for use in developing work maps and floodways. <br /> Tabulate Floodway Widths. PWR will create a Floodway Data Table in FEMA FIS format <br /> suitable for submission as part of the FIS submittal package. <br /> Map Floodway Boundaries. PWR will map the floodway boundaries using the GIS <br /> map layers of the cross sections, stream centerlines and floodplain boundaries such that <br /> the floodway widths are consistent with the model cross section inputs and the Floodway <br /> Data Table. As with the Foodway modeling, PWR makes use of special innovative <br /> routines to greatly expedite the mapping of the floodway boundaries and ensure that they <br /> are consistent with the floodplain boundaries, the data table, and,with the model input. <br /> <br /> ~ , <br /> Complete FIS Work Maps. PWR will use work map templates in DWG format that were <br /> successfully submitted to FEMA for previous FIS studies as the basis for completing work maps <br /> for this submittal. PWR will incorporate information from GIS mapping of floodplain and <br /> floodway boundaries, cross sebtions, and stream centerlines, together with the previously <br /> submitted base map information, to complete work maps that meet FEMA Guidelines and <br /> Specifications and are consistent with FIS report tables and profiles and with the model labeling <br /> and results. <br /> Check Internal Consistency. PWR will review hydraulic models, floodplain and floodway <br /> boundary mapping, floodway data tables, flood profile plots, and work maps to ensure that all <br /> data is internally consistent regarding section widths and distances, section labeling, flood <br /> elevations at sections, and floodplain and floodway widths at sections. <br /> Deliverables: (submitted in FEMA format) <br /> • FIS floodway data table <br /> • GIS map of cross sections <br /> • GIS map of floodplain boundaries <br /> • GIS map of floodway boundaries <br /> • Digital work maps <br /> FEMA FIS SUBMITTAL <br /> This task involves completing the FEMA submittal package according to the FEMA Guidelines. <br /> Results from the hydrologic and hydraulic modeling are incorporated together into FIS report <br /> Page 2 of 4 <br /> <br />