SPDSS_Task41-3_EstMunicpalIndustrialPumpingSPAlluviumRegion

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2.0 Data Analysis This section describes the general methodology and steps used to process the historic pumping data so that a continuous record of pumping could be estimated for each entity. Filling the data records was undertaken in Task 40.1. Data analysis and processing steps included estimating pumping rates, determining the start of pumping, and filling missing records. A detailed description of these processing steps for each pumping entity is provided in Appendix A. 2.1 Pumping Rates All data received was converted to acre -feet and monthly time steps. The appropriation (pumping) rate listed on the decrees was in some cases (like Thornton) for individual wells in a well field but in other cases was for the entire well field. The rates were given in cubic feet per second (cfs) in most cases. For Thornton and Parker a rate (cfs) and a total annual volume was provided. In these cases an adjustment factor was needed to account for the discrepancy between the two values provided so that the cfs rates for individual wells equaled the equivalent total annual volume. In cases where a single rate was provided for a well field the rate was distributed evenly among the reported wells. For one entity, Parker Water and SPDSS Phase 3 Task 41 TM -Final 02/08/2007 7 Pumping: Period Individual or Pumpage Data of Format of Aggregate Units Source/Entity Record Data Time Period Wells Provided Yearly: 1990 -2003 Monthly: 2004 -2005 1990 to Scanned Missing: Ovid 2005 PDF 1995 -1997 One well Gallons Scanned Annual Parker Water and No PDF amount Sanitation District pumping Well permit from (PWSD) records and decree decree One well Acre -feet Public 1995 to Electronic Service /Xcel 2005 spreadsheet Monthly Individual Acre -feet South Adams County Water and Sanitation District 1981 to Electronic Individual and (SACWSD) 2005 spreadsheet Monthly aggregate Acre -feet 2001 to Electronic Sterling 2005 spreadsheet Monthly Individual Acre -feet 2004 to Electronic Assume one Swift & Co. 2005 1 spreadsheetl Weekly well Gallons 1980 to Electronic Aggregate -well Thornton 1990 spreadsheet Monthly field Acre -feet 2.0 Data Analysis This section describes the general methodology and steps used to process the historic pumping data so that a continuous record of pumping could be estimated for each entity. Filling the data records was undertaken in Task 40.1. Data analysis and processing steps included estimating pumping rates, determining the start of pumping, and filling missing records. A detailed description of these processing steps for each pumping entity is provided in Appendix A. 2.1 Pumping Rates All data received was converted to acre -feet and monthly time steps. The appropriation (pumping) rate listed on the decrees was in some cases (like Thornton) for individual wells in a well field but in other cases was for the entire well field. The rates were given in cubic feet per second (cfs) in most cases. For Thornton and Parker a rate (cfs) and a total annual volume was provided. In these cases an adjustment factor was needed to account for the discrepancy between the two values provided so that the cfs rates for individual wells equaled the equivalent total annual volume. In cases where a single rate was provided for a well field the rate was distributed evenly among the reported wells. For one entity, Parker Water and SPDSS Phase 3 Task 41 TM -Final 02/08/2007 7