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-4- Staff has also been working on a link between snowpack information and streamflow information. A GIS project took place last summer by CWCB interns to delineate subbasins within the major river basins, The eventual goal is to allow users to see quickly where the highest snowpack is, where the stream systems and communities are downstream of that snowpack, and where the stream gages are located that would allow measurement of that melted snow once it becomes runoff, . Staff will continue to monitor snowpack and streamflow conditions on a regular basis through the rest of the flood season. Updated and revised data will be provided to the Board at future meetings as needed. Enhanced Snowoack Assessment (SNODAS) The CWCB and the USBR are collaborating on the "Enhanccd Snowpack Assessment" Project that uses modeled snowpack from the Snow Data Assimilation System (SNODAS) and tailors model output to IKm resolution for Colorado's eight major river basins. The project uses the USGS eight digit Hydrologic Unit Code (HUe) basins to then create sub-basin data. The two major goals are to I) develop quantitative snowpack numbers, and 2) link modeled snowpack to hydrologic models for streamflow forecasts, Current online mapping products are: . SWE & Basin average SWE . SWE Change & Basin average SWE change . Snow depth & Basin average Snow depth . 24 hour snowmelt & Basin average 24 hour snowmelt . 24 hour snowpack temperature & 24 hour snowpack temperature average Please note: SNODAS calculations account for the entire area ofa basin and are not just an average of all of the . SNOTEL sites near the basin. Therefore, basin averages compute to much less than NRCS basin averages and are potentially more meaningful for assessing the conditions within the entire basin. Recently Staff presented to the American Consulting Engineers Council (ACEC), a group of consulting engineers that meets regularly to discuss technical and engineering issues. Staff is also scheduled to present during an upcoming American Water Resources Association (AWRA) Annual Symposium on April 14, 2006 to discuss issues related to SNODAS, A Scope of Work has been developed for Phase II, which will include a linked modeling system between snowpack data and hydrologic outputs (forecasts), Staff also has a Scope of Work and option letter for Phase III, which would include the refinement of GIS and web applications as well as the implementation of streamflow forecasts in additional basins, The Phase II work can begin once staff is able to finalize conh'actual issues with the federal government and obtain appropriate signatures for authorization, Dailv Statewide Flood Outlook The CWCB is contracting with John Henz and HDR Engineering, Inc, to provide a daily Flood Threat Bulletin, which is a new service for this year created due to feedback from local users following the 2005 runoff season. The CWCB Flood Threat Bulletin (FTB) will provide a simple but accurate estimate of the flooding threat facing Colorado counties on a daily basis with a basin-specific forecast daily, a 7 -day flood threat forecast and IS-day flood threat outlook. The service will provide predicted flood threat stages related to an increasing likelihood of flooding, The service will be coordinated with the national Weather Service Forecast Offices in Boulder, Pueblo and Grand Junction. This service is currently planned to run from May 1 to September 30, which will include the spring runoff season, the summer thunderstorm season, and the early fall monsoon season. This service is patterned after a well-regarded similar service provided by the Urban Drainage and Flood Control District (UDFCD) for the Denver metropolitan area, The UDFCD bulletin has been praised by emergency managers for saving lives and property damages in the 20+ years that it has been offered. . Flood Protection. Water Project Planning and Finance. Stream and Lake Protection Water Supply Protection. Conservation Planning