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Toby Welborn

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The National Flood Hazard Layer (NFHL) data incorporates all Digital Flood Insurance Rate Map(DFIRM) databases published by FEMA, and any Letters Of Map Revision (LOMRs) that have been issued against those databases since their publication date. The DFIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper Flood Insurance Rate Maps(FIRMs). The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. Â The NFHL data are derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of...
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Analyzing the Response of Waterflow to Projected Climate Conditions in the Upper Rio Grande Basin
Water availability in the upper Rio Grande Basin is dependent on winter and monsoon season precipitation. Consecutive years of drought and above average temperatures have diminished water supply and increased demand for water in this region. The increasing gap between water supply and demand is cause for concern. Climate projections for the southwestern and south central United States suggest that temperatures will continue to increase, affecting seasonal precipitation and water availability. To better manage current water supply and prepare for possible future changes, water managers need projections of future streamflow and landscape conditions that may affect future water supply. The project researchers are...
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. These data are derived from a point shapefile created nightly from data in the Utah Division of Water Rights Database. The source data were acquired on October 26, 2005.
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set was derived from the Nevada Department of Conservation and Natural Resources, Division of Water Resources (NDWR) well log data base (http://water.nv.gov/Engineering/wlog/wlog.cfm). This data set was developed from a version of the data base downloaded October 26, 2005 and reflects the wells entered into the data base up to that date. The data base generally contains logs for wells drilled since 1984, however, some basins...
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Licensing database extracts from the FCC for AM; FM; antenna structure registrations; cellular towers; commercial, private, and broadcast land mobile towers; paging service towers; microwave towers; analog and digital television broadcast locations; and aggregate cell service call sign areas. Â These data were extracted from the FCC database on 06/14/2012 and clipped to the ARkStorm study area extent on 08/07/2013.
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