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Report Executive Summary. For ease of the reader the major components of the <br />Wheeler Report are summarized as follows: <br />Demand. The projected District municipal demand is estimated for 3 levels of <br />development, including future water demand resulting from the Existing Municipal <br />Demand including Base Village and Redevelopment projects, demand under the Town <br />Comprehensive Plan Build-Out Chart, and a maximum development demand level that <br />may result from additional redevelopment and infill development within the District. <br />Consistent with historical practice, the supply of water to meet snowmaking demands, <br />contractual service obligations, and other operational requirements is also considered. <br />The study assumes a voluntary Stream Flow Stewardship Goal of 7 cubic feet <br />per second (cfs) bypassing the District's Snowmass Creek Pump Station diversion, <br />provided alternate sources of water are available to meet District demands in lieu of <br />further diversions from Snowmass Creek during periods of low flow. While the District is <br />legally entitled to divert at times its water rights are in priority, when the flow in <br />Snowmass Creek is below 7 cfs by contractual agreement certain diversion events <br />below established trigger point flow rates necessitate implementation of mandatory <br />conservation measures and increased billing rates to District customers. <br />The analysis also assumes that the District may desire to maintain a raw water <br />storage capacity reserve of potable water usage in the event of catastrophic failure of <br />the primary delivery systems. A catastrophic event could result from uncontrollable loss <br />of supply due to a landslide, blockage or other interruption of the District's primary <br />delivery systems, or from contamination or unacceptable turbidity rendering the raw <br />water sources of supply untreatable. The discussion of catastrophic storage in the <br />Report was requested by the Board to provide information on a perceived worst case <br />scenario and to allow for a review of system reliability at times of low flow and high <br />demand. <br />Yield. This report analyzes the legal and physical availability of water under the <br />District's water rights in view of a maximum historical diversion scenario for water rights <br />on Snowmass Creek during two historical dry periods represented by the 1977 and <br />2002-2003 drought years. <br />Analysis. The analysis indicates that during two historical dry periods <br />represented by the 1977 and 2002-2003 drought years, the District may not be able to <br />meet all future development demands on a number of days without the implementation <br />of additional mandatory water conservation measures, the creation of raw water storage <br />or a combination of both additional conservation and storage. <br />The Report evaluates the amount of raw water storage that would be required to <br />meet anticipated demand without additional mandatory water conservation measures, <br />maintain the 7 cfs Stewardship Goal to the extent possible, and provide storage reserves <br />for a catastrophic event. Neither treated water storage, nor potential additional raw <br />water storage, would be utilized directly to supplement low stream flows to meet the <br />Stewardship Goal, as this could deplete required fire and short-term emergency supplies <br />should a delivery system catastrophe occur. In 1977, the volume of storage required to <br />iv <br />