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Appendix D Acronyms and Abbreviations 1-D one-dimensional HEC-RAS Hydrologic Engineering Center- 2-D two-dimensional River Analysis System 3-D three-dimensional HEC-SSP Hydrologic Engineering Center- Statistical Software Package ADCIRC Advanced Circulation (model) ADJREG adjusted regional regression ICPR Interconnected Pond Routing (equation) (model) AIGA Adaptation of Geographical IFSAR interferometric synthetic aperture Information for Flood Warning radar APPROX approximate study IPET Interagency Performance APPROX-NED approximate study using the Evaluation Taskforce National Elevation Dataset JPM Joint Probability Method BFE base flood elevation LDSNAT limited detailed study, national cfs cubic feet per second LDSNC limited detailed study, North CHAMP Coastal Hazards Analysis and Carolina Modeling Program (model) lidar light detection and ranging LOMC Letter of Map Change DEM digital elevation model DFIRM digital Flood Insurance Rate Map MHHW mean higher high water (datum) DS detailed study MHW mean high water (datum) MLLW mean lower low water (datum) EST Empirical Simulation Technique MLW mean low water (datum) MNUSS Map Needs Update Support FEMA Federal Emergency Management System Agency MTL mean tide level (datum) FIRM Flood Insurance Rate Map NAVD 88 North American Vertical Datum GIS geographic information system of 1988 GPS Global Positioning System NCFMP North Carolina Floodplain Mapping Program 121
122 APPENDIX D NED National Elevation Dataset RR rainfall runoff (model) NFIP National Flood Insurance Program NGS National Geodetic Survey SAC-SMA Sacramento Soil Moisture NGVD 29 National Geodetic Vertical Datum Accounting (model) of 1929 SFHA Special Flood Hazard Area NHD National Hydrography Dataset SWEL stillwater elevation NOAA National Oceanic and SWFWMD Southwest Florida Water Atmospheric Administration Management District NOS National Ocean Service NRC National Research Council TRB Transportation Research Board NWLON National Water Level Observation Network USACE U.S. Army Corps of Engineers USGS U.S. Geological Survey REG regional regression (equation) REGLOW regional regression, 95 percent WHAFIS Wave Height Analysis for Flood lower confidence limit (equation) Insurance Studies (model) REGUP regional regression, 95 percent upper confidence limit (equation)
