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<br />February 27, 1998 <br /> <br />001631 <br /> <br />11.2 Develop Major Diversion Data <br /> <br />Primary Responsibility: Boyle <br /> <br />Most diversion records have been digitized and placed in the CRDSS database only for the <br />period 1975 forward. For the period prior to 1975, most diversions will be estimated. <br />However, a relatively large portion of the basinwide diversions is concentrated among <br />relatively few large projects. Using actual rather than estimated diversions for a limited <br />number of structures is expected to improve the overall quality of the extended historical data <br />set. Therefore the objective of this subtask is to collect diversion records for certain <br />structures, and prepare them for inclusion in the CRDSS database. <br /> <br />The CRDSS database will be reviewed to see what data exist for the major transbasin <br />diverters and key large diversions such as Maybell Canal, the Grand Valley diversions, and <br />the Gunnison Tunnel. Readily available diversions of these major projects will be gathered <br />and digitized, if not already within the CRDSS database. For budgeting purposes, it is <br />assumed that records for approximately 29 projects will be assessed, and that half of these <br />will require gathering additional information and digitizing. It is assumed that diversions for <br />these structures from 1992 through 1996 are currently in the CRDSS database. The data will <br />be digitized in a format suitable for inclusion into the CRDSS database by the State or other <br />contractor. <br /> <br />,.j.aJJ <br />11':";/ <br /> <br />A task memorandum will be prepared, listing the structures for which actual diversions are to <br />be used in the historical data set, the selection criteria, and sources for data. The <br />memorandum is expected to be 2 pages in length. <br /> <br />Deliverables: <br />· major diversion data for 1929-1974 for approximately ten structures, in either ASCII or <br />Excel format <br />· Draft and Final major diversion data memorandum <br /> <br />11.3 Load Database <br />Primary Responsibility: State or Other Contractor <br />The deliverable data from Tasks 11.1 and 11.2 will be loaded into the CRDSS database. <br />Deliverables: <br />· updated database files <br /> <br />11.4 Develop Municipal and Industrial Data <br /> <br />Primary Responsibility: Boyle <br /> <br />Municipal and industrial diversion patterns for structures not included in Task 11.2 will be <br />evaluated to determine changes in diversion patterns over time. This task will identify <br />explicitly modeled diversion structures that have potentially changed during the study period, <br /> <br />2 <br />