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<br />February 27, 1998 <br /> <br />OJ13J5 <br /> <br />using tstool with options for data filling that are consistent with the approach that was <br />taken when the 1975-1991 end-of-month content files were developed under Phase II <br />development. Note that it is assumed that the data provided to the State in Task 11.1 <br />will be available on the CRDSS database prior to executing tstool <br /> <br />Existing Phase IDa diversion structure (*.dds) files will be used in this task, i.e., monthly <br />efficiencies will not be recalculated to reflect 1992-1996 efficiencies, new structures will not <br />be added to the network. <br /> <br />Deliverables: <br /> <br />· preliminary baseflow (*.xbm) files for five basins <br /> <br />11.10 Fill Missing Baseflow Data <br /> <br />Primary Responsibility: Ayres <br /> <br />In this subtask, gaps in historical baseflows at streamgages will be filled and verified for use <br />by the CRDSS Water Resource Planning Models. This will be accomplished by enhancing <br />and applying the existing USGS mixed station model program to do the following: <br /> <br />· Read preliminary baseflow files (*.xbm) developed in Task 11.9 and ignore flows for <br />ungaged points <br /> <br />· Use the USGS mixed station model to fill in missing baseflows at gage points <br /> <br />· Generate a report which documents the dependent I independent station selection <br />process over time, the resulting equations and their statistical properties. <br /> <br />· Provide results which allow the data extension to be validated on a monthly, annual, <br />and basin total. This will consist of comparing means, standard deviations cross- <br />correlations of the extended data to the statistics of the historical data set <br /> <br />· Create five baseflow files for gaged points in which missing data have been filled <br /> <br />At the completion of this subtask, a draft memorandum of approximately 10-15 pages will be <br />prepared to document the data extension procedure and results. <br /> <br />Deliverables: <br /> <br />· five baseflow files for gaged points for 1929-1996 <br /> <br />· draft and final memoranda describing approach and results of this task <br /> <br />11.11 Design Interface <br /> <br />Primary Responsibility: Ayres <br /> <br />In this subtask, a hand or computer generated Graphical User Interface (Gill) will be <br />designed which presents the components of the historical data extension. The design, which <br />will have no functionality, will identify appropriate windows type components (drop downs, <br /> <br />6 <br />