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identify the M &I entities, presents the historic data, discusses the methods used to fill missing <br />records and provides the results. In addition, the historic M &I pumping data were processed to <br />be HydroBase - compatible and will be submitted to the SPDSS project manager for inclusion in <br />HydroBase. The data from this task will be used to as model input in the Task 48 groundwater <br />modeling. <br />Below are conclusions from completion of these tasks: <br />• The estimates of historic M &I pumping that were developed provide an increased <br />understanding of water use in the South Platte River alluvial aquifer system. In general the <br />M &I groundwater use is small compared to surface water use or to agricultural <br />groundwater use within the basin, but can be significant in localized areas where M &I <br />pumping occurs. <br />• There are no consistent trends in M &I groundwater use over time, although many of the <br />municipal entities have a gradual increase in groundwater use during the study period <br />associated with population growth. <br />• The historic pumping data provided by the cooperating entities was valuable in helping to <br />fill missing records and in refining more regionalized estimates based on population and <br />per capita consumption. <br />• The pumping data available for M &I entities is very limited and results in a series of <br />engineering estimates being needed to define establish a continuous record of historical <br />pumping. <br />6.0 Recommendations <br />The following additional data needs were identified during this Phase 3 data analysis: <br />• Make a follow -up data request to the 12 entities contacted under this task that reportedly <br />had historical pumping data but did not provide it by the date needed to complete this task. <br />• Submit the results of this study to the entities that were included and solicit their feedback <br />on the pumping startup dates on pumping estimates. <br />• When future data requests are made, attempts should be made to obtain the pumping data <br />in electronic format and to get estimates on water use when no data are available. <br />• Methods consistent with those used for this study to fill missing data records should be <br />used in the future if additional pumping estimates are made for other M &I entities. <br />SPDSS Phase 3 Task 41 TM -Final <br />02/08/2007 <br />14 <br />