Laserfiche WebLink
o One set of nodes for aggregate unincorporated well water user supplied by Denver Basin <br />Wells (O1_AUP001) <br />Key Municipal Structures <br />The two demand nodes representing each key municipal water user demands are met by multiple <br />diversion structures, storage units, and associated operating rules. <br />• Details of water supply operations, including infrastructure, water rights, and operations <br />for key municipal structures are discussed in various SPDSS Task S -Key Municipal <br />User memoranda <br />In addition to the recommendations listed above for all Municipal Water Users, <br />• Returns from in-house demands should be modeled at the locations of the specific waste <br />water treatment plants used by the municipalities (SPDSS Task S memoranda) <br />• An immediate return flow pattern should be assigned to returns from in-house demands <br />• Returns from outside demands (LIRFs) should be modeled at locations representative of <br />surface water returns and ground water returns from outdoor water uses within the <br />municipalities <br />• Lagged return flow timing patterns should be assigned to LIRFs for key municipal <br />structures based on data obtained from users, Glover analyses, or the future SPDSS <br />alluvial ground water model <br />Aggregate Municipal Structures and Aggregate Unincorporated Structures <br />The two demands nodes representing each aggregate municipal water user (Structure IDs <br />WD_AMPxxx) and each aggregate unincorporated water user (Structure IDs WD_AUPxxx) <br />should be located above key stream gages identified in SPDSS Task 2 or other key <br />administrative locations, generally reservoirs, in order to simplify their representation in the <br />SPDSS model (see Figure 6). <br />• Senior direct flow water rights should be assigned to meet aggregated municipal demands <br />• This approach ensures municipal demands are met prior to irrigation operations and is <br />similar to that used in previous CDSS modeling efforts <br />• Demands for the two (2) sets of aggregate nodes representing Denver Basin water <br />supplies (O1_AMP001 and O1_AUP001) will not be met with surface water rights and <br />should be assigned senior well rights <br />In addition to the recommendations listed above for Municipal Water Users, <br />• An immediate return flow pattern should be assigned to returns from in-house demands <br />and outside demands to simplify representation of timing of outside returns from <br />aggregate structures in the SPDSS model <br />• Returns from aggregate demands should occur directly above the key stream <br />gage/reservoir above which the aggregate demand is located in order to simplify <br />representation and calibration of aggregate demands in the SPDSS model <br />The recommended municipal water user nodes supplied by surface water and ground water may <br />be refined during the modeling process or as more information is obtained by other SPDSS <br />activities. <br />Task 66.2 Memorandum.doc Page 19 of 26 <br />