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Listing of the Prebles Meadow Jumping Mouse — The USFWS issued a proposed rule to <br />list March 25, 1997. The USACE has indicated that <br />Chatfield Reservoir Storage Space Reallocation Reconnaissance Study. Many water <br />suppliers throughout the Denver metro area and the CWCB have been interested for many years <br />in reviewing the allocation of storage space in the Chatfield Reservoir to determine whether <br />additional space could be used to enhance water supplies for the metro area communities. As a <br />result of flooding in 1995 along the South Platte River in northeastern Colorado, operation of the <br />reservoir during flood control operations were given increased attention and in May of 1996 we <br />began more intensive discussions with the Corps of Engineers, water and flood control interests <br />and county officials to develop the information needed to answer these questions. <br />The 1997 Construction Fund Bill (SB 97 -008) included an authorization for a "reconnaissance <br />study" to begin gathering that information, and the CWCB intends to convene an ad hoc advisory <br />committee to oversee the design and implementation of the necessary studies. The proposition <br />we expect to test in these studies is that a modest amount of existing storage capacity can be <br />reallocated from flood control to water supply purposes without any significant increase in the <br />risk of flood damage (perhaps a slight decrease in flooding in the areas downstream from the <br />metro area). These investigations and any ensuing federal decisions may take five years, and they <br />may become complicated with questions concerning the coordinated operation of Cherry Creek <br />and Bear Creak Reservoirs and other issues. At this point, we are seeking assurance from the <br />Corps that any state expenditures on these studies will receive proper credit under the applicable <br />federal cost -share requirements. <br />NORTH PLATTE RIVER BASIN <br />Nebraska v Wyoming — Both the existing decree which impacts the North Platte River and the <br />current litigation which has implications for the South Platte and Platte Rivers as well are of <br />concern. <br />Wyoming v Colorado — The existing decree affects the Laramie River. <br />REPUBLICAN RIVER BASIN <br />Republican River Compact — This compact affects the Republican and tributaries including <br />the Arikaree and Beaver Creek specifically. There are critical issues with respect to this compact <br />and Colorado at this time. However, Kansas and Nebraska discussing groundwater issues related <br />to this compact with a lawsuit a possibility. <br />iT- <br />CITY & COUNTY OF DENVER (In addition to South Platte Issues above) <br />South Platte River and North Fork of the South Platte River Wild and Scenic River <br />Study. The concern is over the affects a designation could cause to the operations of Denver's <br />upstream reservoirs. Any designation can not impact Denver's ability to deliver reservoir storage <br />to Denver's water treatment facilities. <br />Dillon Refill Case — The proposed refill decree for Dillon Reservoir is receiving strong <br />opposition for west slope water users, particularly those in the Grand Valley. <br />C;\msoffice \winword \document \basinissues <br />December 30, 1997 <br />Page 18 of 19 <br />