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Data collection and assessment of terms and conditions for water rights transfers, augmentation <br />plans and substitute supply plans could be a relatively expensive effort. The level of effort for <br />this task is dependent upon the level of detail that would be incorporated into the surface water <br />model. For purposes of this feasibility study, it is assumed that detailed information would be <br />collected and summarized for 10 to 40 of the largest water rights transfers and augmentation <br />plans (in terms of annual diversions) in Division 1 and Water District 47. <br />The CWCB tabulation of instream flows should be incorporated into HydroBase, either directly <br />or through linkages to the CWCB's database with querying tools to obtain all information <br />currently in the CWCB database. <br />Priority call data would be valuable to an understanding of historic and existing water rights <br />administration. Existing call records for the mainstem of the South Platte River, interpreted and <br />digitized by the Division 1 Engineer's Office, would be reviewed and validated prior to <br />placement in HydroBase. Other existing call records would be interpreted and digitized. As part <br />of this effort, various issues concerning the quality of the call records would have to be <br />addressed. This effort does not address the development of call records where none exist. <br />3.7 WELLS <br />Well data are important as a basic water resource data need and for use in water rights <br />administration and modeling. In the SPDSS, well data are required to identify the location and <br />determine the capacity and ownership of wells in the basin. In addition, the well data could be <br />used to establish a tie to the water rights. There are well completion and driller's well logs <br />available for most well permit records. <br />3.7.1 Description and Inventory of Available Data <br />Publicly recorded well information for the South Platte River basin is available primarily from <br />the State Engineer's Office (SEO) and the Colorado Oil and Gas Conservation Commission. <br />These data vary greatly in content and quality. Much of this information is administrative in <br />nature. <br />The well data available from the SEO are contained primarily in three databases. The first is the <br />water rights tables in Hydrobase, which includes information on well owner, location, use and <br />adjudication information, including decreed pumping rate and priority date. Over 25,000 well <br />records consisting of absolute rights and conditional rights are maintained in the water rights <br />tabulation for Division 1 and Water District 47. Information from wells located in the <br />Designated Basins is listed in Hydrobase under Water Division 8. <br />The second database, the well permit database for Division 1 and Water District 47, is larger and <br />includes information on (1) wells that may or may not be listed in the water rights database, <br />(2) wells that are for non-production (e.g., monitoring) purposes, (3) wells that have been <br />abandoned, and (4) wells that have yet to be installed. This database also contains information <br />p:data\gen\spdss~final report\chapter 3.doc 3 -1 S <br />October 31, 2001 <br />