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• <br /> Project Estimated Cost <br /> Regional Regression Equations—StreamStats Arc-Info Coverage Development. $75,000 <br /> This project is intended to support the USGS Office of Surface Water in the development of a <br /> GIS-based software program called StreamStats. This program will allow users to access <br /> regional flow equations online by clicking on stream segments on a map of Colorado. The <br /> primary benefits are the ability for the public to determine high and low flows at ungaged sites <br /> and the increased accuracy in determining basin variables that are used in the regional flow <br /> equations. For StreamStats to work properly,considerable.background work must be <br /> completed. This work involves delineating the variables used in the regional equations into <br /> ArcInfo coverages and verifying the accuracy of the coverages. The end product will allow a <br /> user to click on any stream section in Colorado and receive a discharge of a specified recurrence <br /> (e.g., 100-year flood, 7-day 10-year low flow, etc)based on the regional flow equations, <br /> provided the regional equation is appropriate for that stream. CWCB staff currently performs <br /> these tasks manually utilizing the USGS Water-Resource Investigation Report 85-4086. A GIS <br /> based program would provide substantial cost and times savings in performing such analyses. <br /> Phase III Implementation of Dye Dilution tracer methodologies to monitor late $ 45,000 <br /> season and winter flow conditions. <br /> In FY 2002&2003,the Finance Committee and the CWCB authorized staff to work with the <br /> DWR&USGS to fund projects for the development of new tracer methodologies to monitor <br /> late season and winter flow conditions. Phase I,which was started last winter,involved <br /> research to study the practical application of this gaging methodology. The results of the <br /> search showed that the tracer gage system is feasible and can be implemented. Phase II, <br /> Lich was approved last year,was for implementation of the methodologies at one or more sites <br /> in Colorado. However, as a result of Phase I research, it was determined that additional <br /> engineering and development of the tracer equipment was required. Last spring,the USGS <br /> acquired additional funding for this project, and CWCB funds authorized in 2003 will also be <br /> utilized to perfect the technology for tracer gages. <br /> This request is for Phase III implementation of the tracer methodologies,which will involve <br /> installing a working tracer gage with telemetry equipment at a site where the CWCB requires <br /> winter flow data. The total amount requested for phase III is $45,000. The USGS will provide <br /> a$24,000 match. A potential site,previously identified in Phase II,is the Officers Gulch staff <br /> gage which is used to monitor Copper Mountain's compliance with the 1986 DNR/Summit <br /> County Ski area agreements. Another potential site is located on the Snake River near <br /> Keystone. <br /> The total amount of CWCB funding for all three phases is$150,000. The total USGS matching <br /> funds amount to $101,000. The detailed USGS proposals are available for review. <br /> ISF low flow warning system utilizing existing satellite gages. $15,000 <br /> This is an on-project that was initiated in FY 2002. It involves coordination with the DWR and <br /> USGS, as well as IT programming to automatically alert CWCB staff when low flow conditions <br /> exist. This funding request is to further refine the capabilities of the system, add additional <br /> alert gages to the system,provide minimal operating expenses for phone-based alerts,and <br /> provide for its integration into the Instream Flow Decision Support System. <br /> Flood hardening and flood warning systems. $ 50,000 <br /> Over the past three years, CWCB,DWR and USGS staff began a process to upgrade gage <br /> installations throughout the state so that they could continue to be operated and survive during <br /> ith flow events. This effort has been referred to as"flood hardening." Each year, gages from <br /> aster list,that was developed in 2001/2002,will be evaluated on an individual basis and <br /> Flood Protection•Water Project Planning and Financing•Stream and Lake Protection <br /> Water Supply Protection•Conservation Planning <br />