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PROJECT APPROACH <br />If the KML file is not suitable for the Flood DSS map server, a second approach is to use the <br />Python script developed by Riverside for the CWCB to download and process the raw data tables <br />and join the current data to a SNOTEL station shapefile. <br />Flood Threat Bulletin 7-15 Day Flood Warning -HDR provides the CWCB with flood threat <br />warning maps during the flood season from April through September. The maps are available <br />through the CWCB's Flood Outlook website in a PDF format. In the Flood DSS prototype, an <br />example flood threat bulletin was digitized for display in the map server. For the Phase I Flood <br />DSS, Riverside will work with the CWCB and HDR to obtain the data from a regular data feed <br />in a shapefile or geodatabase format. This will allow an automated process be developed to <br />update the Flood Threat. <br />SNODAS SWE -Real-time SNODAS data products are available from the National Operational <br />Hydrologic Remote Sensing Center (NOHRSC). Archived SNODAS data are available from the <br />National Snow and Ice Data Center (NSIDC). The data are available in several formats. <br />NOHRSC hosts daily Google Earth KML layers for the past six days. In addition, hourly and <br />daily grids in Band Interleaved by Line (BIL) format can be downloaded and processed into an <br />ArcGIS environment. Riverside developed an ArcGIS tool that downloads and processes the <br />SNODAS SWE data into a statewide map for Colorado (Figure 4-~. This tool could easily be <br />expanded to process the sublimation and snowmelt data products as well. <br />DNR RFP PDA-923 41 R I V E R S I D E <br />Figure 4-6. Potential Data Source - SNOTEL SWE Percent of Normal KML from NRCS <br />