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MEMO -TASK 90.2 <br />QAQC of Digitized Field Boundaries. After irrigated parcel boundaries were digitized, they <br />were checked for accuracy and consistency. The original paper maps containing manual <br />interpretations and boundaries were visually compared to the digitized fields to ensure that they <br />were consistent and complete. The topology and the horizontal positioning of boundaries were <br />also evaluated to ensure that boundaries did not overlap or have unnecessary gaps and that they <br />aligned correctly on the DOQQ. Fields were edited and revised as necessary. <br />3. Deliverables <br />The draft irrigated parcels delivered with this memo are written to the CD entitled "SPDSS Irrigated <br />Parcels (All Districts) Draft 01/20/2004". Contained on this CD are two directories, one for District 47, <br />and one for Division 1. Each directory contains a shapefile with the irrigated parcel boundaries and <br />metadata for the irrigated parcels. An example of the draft-irrigated parcels is shown in Figure 3. <br />4. Comments/Concerns <br />With this memo, irrigated parcels are being as a first draft. The parcel boundaries for Districts 1, 2, 3 and <br />64 will be revised over the course of the next several months as part of a review process under Task 91 <br />that will involve water commissioners, water districts, irrigation companies or others. Irrigated parcels <br />for other districts will be finalize during Phase 3 of SPDSS. The parcel boundaries included with this <br />memo have undergone quality assurance and control checks; however, there will be revisions and <br />refinements as the additional information is gathered. In addition, an accuracy assessment will be <br />conducted on the irrigated parcels using field verification data collected from the Farm Service Agency <br />under Task 89.6. <br />Page 5 of 6 ~l~lverslde Technology, lnc. <br />Gr:HS•: Rx:soarcc~s En;:ncer~nc.~~ad cuns.nrmc <br />