Laserfiche WebLink
MEMO -TASK 91, APPENDIX F <br />As presented in Table F. 1 the above analysis resulted in 2867 unique permits from an original list of <br />3941ocated in the Lost Creek (Basin 5) of the designated basins (Division 8). <br />Table F. 1. Approach Procedure for Unique Permits <br />No. of Ste Activities Results <br />Total Records Records Removed <br /> Query from HydroBase with following criteria: <br />1 ~v - g' 394 --- <br /> basin = 5, <br /> yield >=50 gpm <br /> Remove permits that have activity or status cods equal to: <br />2 ~~~~~ ~~~~~ ~~~~~ ~~~,~~ ~~Aw~~ ~~cA~~ ~~cP~~ ..EP.. ~~~~~ ~"I~" 367 27 <br /> ~~Tw~~ ~~cP~~ <br /> Remove duplicate permits regarding permitno to ensure permitno is <br />3 v 352 15 <br /> uni ue <br /> Remove duplicate permits regarding distance to ensure distance <br />4 v 2867 665 <br /> between an two wells is e ual to or reater than 50 meters <br />1) When a duplicate was found in Steps 3 or 4, no effort was made to determine which may be the most <br />valuable to retain and which should be removed. A potential refinement to these steps might include: <br />select the earliest date, select the largest capacity, etc. <br />2. Evaluate the Accuracy of the Proposed Method <br />In order to evaluate the accuracy of the proposed method an attempt was made to match the each of the <br />2867 unique well permits in the HydroBase db to the 285 wells (GPM>=50) contained in the Lost Creek <br />db. As summarized in Table F. 2, 230 unique matches resulted from comparing the HydroBase db <br />permit number (permitno w/o suffix) to either the Lost Creek db permit or old permit fields (w/o suffix). <br />55 records in the Lost Creek dB also could not be matched to a unique record in the HydroBase dB (285- <br />230). <br />Table F. 2. Lost Creek dB Well Matching Summary <br />Activity Number <br />Match Permit field 174 <br />Match Old Permit field 83 <br />Subtotal Matches 257 <br /> <br />Less Duplicate records 27 <br />Total Unique Matches 230 <br />Unique Matches 81% <br />RESULTS <br />A four step process has been developed to identify unique wells from the permit portion of HydroBase <br />for use in matching wells to irrigated parcels in a designated basin (see Approach, Section 1). A <br />comparison of this method to the Lost Creek db has resulted in matching 81% (230 of 285) of those <br />wells. Although not perfect, the above approach is estimated to be appropriate for the use in the SPDSS. <br />Page 30 of 55 ~,I"'~fversfde Technolagy, Pnc. <br />Wafer Rexoxces Enginec.•rnq arzd Cnrzxv+lr~g <br />