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<br />. <br /> <br />Task IIIa-6 San Juan/Dolores River Basin WRPM Enhancement <br /> <br />Objective: The San JuanlDolores River basin model will be enhanced to include the approximately <br />25 percent of current water use which was left "in the gage" in the Phase II modeL Additional <br />diversions and storage structures will be aggregated to produce a manageable data set and to avoid <br />significantly degrading computational performance, The final model will be calibrated and <br />documented. <br /> <br />Prerequisite: The Phase II San Juan/Dolores River Basin model is documented and calibrated with <br />approximately 75 percent of the current water use modeled and with irrigation demands based on the <br />1993 GIS mapping in the calculated scenario, <br /> <br />Assumptions: - Study period is 1975 through 1991. <br /> <br />- Total irrigation consumptive use is defined as the consumptive use associated with the <br />irrigated acreage recorded in the CROSS irrigatcd acreage spatial database. Structures and water <br />rights not tied to irrigated parcels will not bc included in the model, but will be documented as being <br />excluded. <br /> <br />. <br /> <br />The Tasks for Task 6, San Juan Dolores River Basin WRPM Enhancement, are the same as the <br />Tasks for Task 3 except for the basin of interest, the allocated budget, the projected work schedule, <br />and the activities described in the table labcled Task 6 Activity Modification (from Task <br />descriptions in Task 3). <br /> <br />Task Leader: Meg Frantz (Boyle) <br />Task 6 Activity Modification (from Task descriptions in Task 3 <br /> <br />. <br /> <br />Task No. .." D~scription Activity Modification from Task 3 Tasks <br /> , <br />6,01 Phase II Instream Flows None <br />6.02 Map Preparation None <br />6.03 Aggregate Irrigation Anticipate approximately 40 aggregated irrigated structures <br /> Structures <br />6.04 Add Aggregated Structures to to reflect number of Base Flows indicated in 6.03 <br /> Network <br />6,05 Define Water Right Classes None <br />6,06 Assign Return Flow Same as 3.06 except there are more nodes and the exceptions in the <br /> Characteristics San Juan/Dolores may be more frequent than in the Yampa, <br />6,07 Generate Aggregated Same as 3.07 except there are more structures as noted in 6.03. <br /> Parameters These will need to be visually checked for major errors, <br />6,08 Assign Aggregated Irrigation None <br /> Efficiencies <br />6.09 Generate New ,ddm and .ddh None <br /> Files <br />6,10 Aggregate M&l Demands None <br />6,11 Aggregate Reservoirs and None <br /> <br />1144 <br /> <br />Phase llla Scope of Services <br /> <br />A.41 <br /> <br />Jan31,1997 <br />