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MEMO -TASK 91 <br />Parcel Delineation Ortho Image <br />^ Digitize parcels on Base map <br />screen Landsat NDVI <br />Composite <br />Map Preliminary Service Areas <br />^ Digitize service areas <br />^ Assign diversion IDs to irrigated <br />parcels using service areas <br />Locate Wells and Well-to-Parcel <br />Matching <br />^ Obtain well decrees <br />^ Match irrigation wells to parcels <br />Water User Meetings <br />• Review preliminary data with <br />water commissioners and <br />ditch companies <br />^ Diversions <br />^ Ditches <br />^ Hydrography <br />^ DEM <br />^ DRG <br />Review and Final Mapping <br />• Conduct final meeting with <br />water users, review and edit <br />Figure L Irrigation Service Area Mapping Overview <br />Table 1. SPDSS Technical Memoranda Describing Major SPDSS Processes <br />Process/Data Technical Memorandum <br />Satellite Derived NDVI Images and Composite Memo 89.1-Finalize Methods and Order Imagery, 7/8/2003 <br />Orthoimage Base Map Memo 90.1-Image Base Map, 2/9/2004 <br />Irrigated Parcel Boundary Delineation Memo 90.2-Determine Field Polygon Boundaries, 2/9/2004 <br />2.2 Mapping Preliminary Service Areas <br />2.2.1 Digitize Service Areas <br />Digitizing preliminary irrigation service area boundaries consisted of four steps: analyze topography, <br />digitize boundaries using ArcMap, QAQC service area boundaries, and attribute service areas with <br />Diversion IDs. Figure 2 is a flowchart of the approach for mapping the preliminary service area <br />boundaries. <br />Page 2 of 55 ~R~versfde FecAno[o`(!~Y fnc. <br />4'JaYer Resources Errgi~ecr:np an~i L~ar+suFlrnd <br />