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MEMO -TASK 91, APPENDIX 8 <br />Table B. 1. StateDGI Match Definitions <br />Type 1 Well is inside parcel <br />Type 2 Well is outside parcel but within 1/4 mile <br />Type 3 Well is within 1/4 mile of parcel but has no yield (Non in SPDSS) <br />Type 4 Well that is within 5 miles of a parcel that must be matched to a well <br />Type 5 Match that has been hand edited <br /> Well matched to a parcel with user supplied information on ground <br />Type 7 Water use. Parcel was described as supplemental or ground water only. <br /> Specific irrigation well use was not supplied. Type 7 matches are <br /> matched to a well that falls within the arcel. <br /> Well matched to a parcel with user supplied information on ground <br />Type 8 Water use. Parcel was described as supplemental or ground water only. <br /> Specific irrigation well use was not supplied. Type 8 matches are <br /> matched to a well that is within a'/4 mile away. <br /> Well matched to a parcel with user supplied information on ground <br /> water use. Parcel was described as supplemental or ground water only. <br />Type 9 Specific irrigation well use was not supplied. Type 9 matches are <br /> matched to a well that is greater than '/4 mile away or to a well that was <br /> already matched as a type 7 or 8. <br />The first iteration of StateDGI used all the parcels except the surface water only parcels and the parcels in <br />designated ground water basins. Parcels that were known to be ground water only were attributed as <br />such. Parcels that were supplemented with well water were not attributed as supplemental at this stage. <br />This was done so that the parcels supplemented with well water do not monopolize the wells and <br />erroneously prevent a well from being matched to another parcel. All parcels irrigated with sprinklers <br />were attributed as such. Center pivots were attributed with common IDs. StateDGI was then run using <br />the parcels and decreed irrigation wells greater than 50 gpm. The resulting `We1lParcel' table was related <br />to the parcels and edited. The first task was to change the common center pivot IDs back to the correct <br />parcel IDs. The `We1lParcel' table was joined to the irrigated parcels using the common center pivot ID. <br />The center pivot ID in the `We1lParcel' table was changed back to the correct Parcel ID. Records were <br />copied and added to the `We1lParcel' table so that each part of a common center pivot was matched to the <br />same wells. All the matches for a center pivot were evaluated and the lowest type match was used for <br />each record. This minimized possible Type 4 matches. However, a single well will be matched to more <br />than one parcel if those parcels form a single center pivot. Information gained from water users on <br />specific well matches was then used to further edit the `We1lParcel' table. Those parcels that were <br />matched to an irrigation well by water users were identified and the `We1lParcel' table was edited to <br />reflect the correct matches. Changes to the `We1lParcel' table were marked as a Type 5 match. <br />The second iteration of StateDGI matched wells to parcels supplemented with ground water that had not <br />already been matched in the first iteration of StateDGI. In this iteration only, those parcels that were said <br />to use supplemental well water-by-water users and did not have a well match were used. These parcels <br />were subset from the main parcel database and input into StateDGI. The parcels were temporarily <br />attributed as ground water only so that the well matching routine would be required to match a well to <br />them. Center pivots were attributed with a common center pivot ID as in the first iteration. All of the <br />wells were used as input into StateDGI so that the parcel would be matched to the closest well. The <br />resulting `We1lParcel' table was then edited in the same way as after the first iteration. All matches from <br />this step were labeled as a Type 6 match. After editing the table, it was appended to the first `We1lParcel' <br />table to create a single table. It is possible that more than one parcel is matched to a single well, but <br />unless the parcels are part of a center pivot, the match will be marked as a Type 4 or 6. <br />The final step in matching irrigation wells to irrigated parcels was locating wells in designated ground <br />water basins and matching them to irrigated parcels. The designated ground water basins in Division 1 <br />Page 20 of 55 ~Rlyerslde FecAno[o`(!~Y Inc. <br />4'JaYer Resourer..s Errgi~ecr:np an~i L'ansuFlrnd <br />