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Needs Assessment <br />• Need to understand the rate and variation of upward leakage from the confined to the <br />unconfined aquifers <br />• Need to know if and how the operation of the Closed Basin Project affects surface <br />water users south of the Rio Grande <br />• Need to know how well users in the Saguache area affect surface and ground water <br />users in other parts of the basin <br />• Need to know how precipitation and snowpack changes in the San Juan and Sangre <br />de Cristo ranges affect recharge and well head in the confined and unconfined <br />aquifers <br />• Need a groundwater model capable of providing a management framework for the <br />valley <br />• Need to know what portion of streamflow losses (leakage) recharges the confined <br />and unconfined aquifers <br />• Need to know if the well capping and valuing program made it easier to meet <br />compact obligations, preserved head in the confined aquifer, enhanced surface flows <br />• Need to determine if there should be a program of well pumping flow measurement <br />(run-time or energy-use measurement) <br />• Need to revise and validate the current ground water model framework, assumptions, <br />and input values <br />• Need a ground water model to represent more surface streams and drains <br />• Need to determine if the confined aquifer can be managed as a reservoir in a way <br />similar to the unconfined aquifer <br />• Need to define areas that have the best potential for recharge of the confined aquifer <br />• Need to track the confined aquifer recharge <br />• Need a long-term data collection program to improve ground water model <br />assumptions and inputs <br />(6) Streamflow Forecasting <br />• Need a better seasonal forecast tool that could be updated as the season progresses <br />• Need additional snow and climate data <br />(7) Water Budget <br />• Need abasin-wide water budget <br />• Need a better overall understanding of the evapotranspiration in the basin <br />• Need an improved understanding of the relationship between use and supply <br />• Need to develop a procedure to accurately estimate water use from the consumptive <br />use model <br />• Need to know how much water is available on the Conejos <br />• Need to understand long-term water balance, taking long-term predictable/variable <br />inflows, outflows, and storage into account <br />• Need to understand the relationship between the water balance and the water- <br />dependent ecosystems and species <br />(8) DSS Design <br />• Need a relational database to store and organize tabular data <br />• Need a spatial database to store and organize map-based information <br />• Need utilities so users can generate maps from the system's geographic information <br />system (GIS) data <br />• Need utilities to query the database to assemble data sets for modeling <br />a454/report/final/needs. doc 07/2&~OS 2-3 <br />