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Table 6: Bedrock Monitorin Wells Details <br /> <br /> <br />Well Identifier <br /> <br />Date Measured Depth to Groundwater <br />Water Level <br />ft b s <br />Depth to Data logger <br />ft b s <br />CO3-LTDW 5/2/06 275.6 481 <br />CO3-TKD 5/ 2/ 06 561.9 781 <br />CO3-KLF 5/ 2/ 06 819.9 1382 <br />CO6-KA 5/ 2/ 06 1081.1 1682 <br />ft bgs-feet below ground surface <br />The ongoing collection of water level data from these wells is discussed in Section 2.2.2. <br />4.0 Monitoring Well Surveying <br />The objective of t11is sub-task, which was completed i11 P11ase 3, was to determine the horizontal <br />and vertical location of selected wells in the DWP monitoring program using a licensed <br />surveyor. The purpose of the surveying was to obtain more accurate location and vertical <br />datum information on t11e measuring points for these wells to improve the accuracy of t11e water <br />level elevation data. <br />The selected areas for alluvial well surveying include the downstream portions of Lost Creek, <br />Bijou Creek, and on the main stem of the South Platte River just upstream of Greeley. These <br />locations were chosen to assist with groundwater flux calculations in Phase 4 Task 48 of the <br />SPDSS and to assist with groundwater model calibration. Wells with longer periods of <br />measurement records were given preference when selecting t11e candidates to be surveyed. <br />The Central Colorado Water Conservancy District (CCWCD) measures water levels in wells <br />located in the SPDSS study area and provides data from a subset of their wells to the DWR <br />alluvial water level monitoring program. Any wells measured by CCWCD with multiple <br />historic water level data measurements were considered candidates for surveying. <br />From the DWP's and CCWCD's monitoring programs, a list of candidate wells to be surveyed <br />within the target areas was created. Approximate 1orizontal coordinates for each well were <br />known, so county assessor's parcel data were used to identify the landowner for each well. Eac11 <br />landowner was then contacted to obtain permission to survey the 1orizontal and vertical <br />location of their well. Afollow-up letter summarizing the survey program was then mailed to <br />eac11 owner. In total, 15 wells in the DWR program and three CCWCD wells, from which data <br />had not previously been shared with the DWR, were selected to be surveyed. <br />Additionally the four bedrock wells discussed in Section 2.0 were selected to be surveyed, for a <br />total of 22 wells identified for surveying. <br />SPDSS Phase 4 Task 39 Technical Memorandum-Final 20 <br />O~i20%2008 <br />