Laserfiche WebLink
5. In ArcView with the original ~oils'inap, th e text table from the previous step was <br />added and joined to the ~oils'9nap attri bute table. The GIS theme was renamed to <br />AWC"and metadata was prepared to descri be the coverage creation and attributes. <br />Assign Soil Moisture Capacities to Parcels and Structures <br />The following steps were preformed to assign a soil moisture capacity value to each key <br />structure or aggregate structure modeled in the historic consumptive use analysis. <br />1. An ArcView prof ect was created with the AWC theme, the irrigated parcel theme, <br />and the ditch service area theme. <br />2. A script called iilodfind"(Attachment 1) wa s used to determine the intersecting area <br />of the AWC theme and the irrigated parcel theme. The intersected areas were <br />weighted by the soil moisture capacity file and a new weighted soil moisture capacity <br />filed was created in the irrigated parcel theme. <br />3. The iilodfind"script was used to determ ine the intersection area of the irrigated <br />parcel theme and the ditch service area themes. The intersected areas were weighted <br />by the soil moisture capacity field created in step 2. The resulting weighted soil <br />moisture capacity field was added to the ditch service area theme. <br />4. Default soil moisture capacities were determined by County/HUC combination in an <br />excel spreadsheet called 1'rcweditchdata.xl s:' The ditch service area theme attribute <br />table from step 3 was copied into a worksheet. The average of the soil moisture <br />capacity field for structures in each County/HUC combination was determined. <br />These average soil moisture capacity values were assigned to aggregate surface and <br />ground water structures and structures not included in the ditch service area theme. <br />Table 1 shows the average soil moisture capacities, in inches per inch, for each <br />County/HUC combination with irrigated acreage in the Rio Grande Basin. Aggregate <br />structures, or structures with acreage outside of the irrigated parcel theme coverage, were <br />assigned these average soil moisture capacities. <br />appendC_cropcu.doc C-3 of C-4 June 5, 2000 <br />