Laserfiche WebLink
by comparing 100 percent of the entered data to the original hard copy data. Data <br />received in electronic format from sources other than HydroBase were checked for data <br />importation accuracy by manual verification of 10-percent of the values imported into a <br />HydroBase-compatible table against the original electronic source data. If errors in the <br />data entry were found, the error was corrected in the spreadsheet. The spreadsheet was <br />then uploaded into the SPDSS database. This procedure was used to assure quality for <br />all data that was added to the SPDSS database (that included data provided from <br />HydroBase) before analyses were performed. <br />3.0 Results <br />The hydraulic conductivity (K), storage coefficient (S) and specific yield (Sy) for of each <br />the bedrock aquifers in the Denver Basin Region are discussed in this section. The <br />aquifer property data have different levels of confidence based on the method of <br />collection. As discussed in Section 1.1, these data collection methods include aquifer <br />pumping tests, specific capacity tests and laboratory tests. To assist in interpreting the <br />results, the test data are reported on the figures using different symbol types. Due to the <br />large number and localized variation in data caused by aquifer heterogeneity, the K data <br />are presented graphically as individual postings, with data falling in specified quartile <br />ranges depicted by different color-coded symbols. <br />This TM is intended to analyze and present raw field data. It is fully understood some <br />of the data points presented here, in particular data obtained from specific capacity and <br />lab test results, may appear anomalous compared to what can realistically be expected <br />from the Denver Basin's bedrock aquifers. These data were included in the analysis <br />herein because they could not be screened by the methods presented in Section 1.2.2. <br />As described in Section 1.2.5 each quartile grouping of K data presented in the following <br />sections contains an even number of data points based on the numeric range of the <br />aquifer property values. The data groupings are defined with blue representing the 75th <br />percentile (the highest 25 percent of the values), green representing the 75th to 50th <br />percentile values, orange representing the 50th to 25th percentile, and red representing <br />the lowest 25th percentile of data by property value. The numeric ranges in K values for <br />each aquifer are different since the distribution of results differs for each aquifer. <br />The hydraulic conductivity, specific yield and storage coefficient statistical data for each <br />aquifer are summarized in Tables 4 through 6, respectively; the number of test data <br />points, quartile ranges, median and average values are provided for each aquifer. The <br />detailed results for these aquifer properties are discussed in Sections 3.1 through 3.3, <br />respectively. Conclusions derived from the analyses presented below are provided in <br />Section 4. All data will also be provided to the DWR in ArcGIS shapefiles as part of this <br />TM. <br />SPDSS Phase 2 Task 43.2 TM -Final 16 <br />2/ 13/ 2006 <br />