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• Improved snowmelt forecasts and local precipitation and streamflow forecasts to assist in <br />water rights administration <br />• Ability to easily incorporate user supplied data <br />The following additional needs have been identified to help water users and managers perform <br />water accounting (items from above are not repeated below): <br />• Access to scanned images of Water Commissioner field books <br />• Access to CWCB instream flow tabulation <br />• Accounting for various types of water (e.g., transmountain, storage, direct) <br />• Access to provisional data (e.g., real-time data before it becomes an official record) <br />• Access to historic call records in a digital format <br />• Improved snowmelt forecasts and local precipitation and streamflow forecasts to assist in <br />reservoir operations and water management <br />• Access to observed and calculated point flows for monitoring instream flow requirements <br />• Access topermit/water rights data for wells <br />• Ability to share data among various accounting/management tools used by the State and <br />others <br />2.5 GROUNDWATER PLANNING NEEDS <br />Groundwater planning needs have been segregated into two categories (1) those general needs that <br />apply to all groundwater within the South Platte River basin, and (2) those needs that apply only to <br />the Denver Basin aquifer system and overlying alluvium. <br />2.5.1 General Groundwater Needs <br />Identified general groundwater needs include: <br />• Need to develop better estimates of historic and current well pumping <br />• Need to assess the effect and timing of stream depletions from alluvial well pumping <br />• Need to quantify water leaving Colorado in aquifers as underflow <br />• Need to better quantify the effect of recharge and augmentation plans on stream accretions <br />in terms of both timing and location <br />• Need to evaluate the effect of conjunctive use on streamflow <br />• Need to extend procedures for quantifying stream-aquifer interaction (e.g., stream depletion <br />factors or SDFs) into areas where they do not currently exist (e.g., SDFs into the Beaver <br />Creek alluvium) <br />• Need to evaluate the effects on surface water appropriators of additional groundwater <br />development to assure out-of-priority depletions are replaced <br />p:data\gen\spdss~final report\chapter 2.doc 2-6 <br />October 31, 2001 <br />