Lower Arkansas Districts 10_14_17&67 Diversion Inventory

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September 15, 2004 Lower Arkansas River Basin Districts 10, 14, 17 and 67 Diversion Structure Inventory term basis, or the flow path or geometry of the river upstream of each structure. For example, if the structure were located on the "inside curve" of the river, the debris would most likely be conveyed away from, rather than towards, the diversion stru ctu re. Following the narrative is a Summary of Recommended Repairs and an Estimated Range of Cost for each structure. Rather than providing a conceptual level opinion of probable cost for repair(s) or replacement(s) for each structure (single dollar amount), the following ranges of repair costs were identified: Low Medium High $0 - $250,000 $250,000 - $500,000 +$500,000 In general, a "low" repair cost range was designated for those structures in good condition, a "medium" cost range for those structures in fair condition, and a "high" cost range for those structures in poor condition (refer to Section 3,,3, "Condition"). Following the Estimated Range of Cost, annotated photographs and a Field Inventory form are included for each structure. Sketches were also done and included only if a structure was considered to be in fair or poor condition. 5.0 GIS A geographic information system (GIS) has been set up for the project area. The field- collected GPS points have been converted to a data layer, and data attributes for each structure are contained in the data layer's database. The attributes include structure name, directions to the structure, latitude and longitude coordinates, contact information and various other items. The data layer is in ESRI shape file format. An Arcview 8.3, ArcMap project file (.mxd) has been set up for use with the structure data. The project file has roads, cities, railroads, streams, counties, districts, township/range, and USGS quad lines. An ArcReader project file (.pmf) has also been created (ArcReader is freely available from the ESRI website). The above data and project files are included on the CD attached with the report An Adobe Acrobat .pdf file has been created for each structure. These files can be opened from within ArcMap or ArcReader via the hyperlink tool (lightning bolt icon)" A text file has also been created for each structure for taking notes; this is also opened via the hyperlink. The GIS can be used to pan and zoom around the area of the structures" By using the "identify" button, a structure can be clicked on, and the data for the structure will appear in a pop-up window~ Maps can also be printed using the ArcMap or ArcReader software. The following page represents a screen-capture of the ArcGIS user interface and shows various helpful hints. Farnsworth Group Page 4