CONVERSION FACTORS, DATUMS, TEMPERATURE, AND ABBREVIATIONS and ACRONYMS
| Multiply | by | To obtain |
|---|---|---|
| Length | ||
| inch | 25.4 | millimeter |
| foot | 0.3043 | meter |
| mile | 1.609 | kilometer |
| Area | ||
| acre | 4,047 | square meter |
| square mile | 2.590 | square kilometer |
| Flow | ||
| million gallons per day | 0.04381 | cubic meter per second |
Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929), a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.
Horizontal Datum: Latitude and longitude coordinates are referenced to the North American Datum of 1927 (NAD of 1927).
Temperature: Temperature is given in degrees Fahrenheit (°F), which can be converted to degrees Celsius (°C) as follows:
°C = 5/9 (°F - 32)
| ACE | U.S. Army Corps of Engineers |
| BRASS | Bedrock Regional Aquifer Systematics Study |
| BRD | Biology Discipline |
| CCP | central Coastal Plain |
| CDC | Centers for Disease Control |
| CGIA | Center for Geographic Information and Analysis |
| COG | Council of Government |
| CUA | Capacity Use Area |
| DENR | North Carolina Department of Environment and Natural Resources |
| DOI | U.S. Department of the Interior |
| DOQ | digital orthophotography quadrangle |
| DWQ | Division of Water Quality |
| DWR | Division of Water Resources |
| FEMA | Federal Emergency Management Agency |
| FERC | Federal Energy Regulatory Commission |
| FIRM | Flood Insurance Rate Map |
| FWS | U.S. Fish and Wildlife Service |
| GD | Geology Discipline |
| GIS | geographic information system |
| LIDAR | light interferometric distance and ranging data |
| NAWQA | National Water-Quality Assessment Program |
| NCWRP | North Carolina Wetlands Restoration Program |
| NHD | national hydrography dataset |
| NIEHS | National Institute of Environmental Health Sciences |
| NIH | National Institute of Health |
| NPDES | National Pollutant Discharge Elimination System |
| NPS | National Park Service |
| NSIP | National Streamflow Information Program |
| NWIS | National Water Information System |
| NWS | National Weather Service |
| NWR | National Wildlife Refuge |
| RASA | Regional Aquifer System Analysis |
| SAMAB | Southern Appalachian man and the Biosphere |
| SAV | submerged aquatic vegetation |
| TMDL | total maximum daily load |
| USGS | U.S. Geological Survey |
| WRD | Water Resources Discipline (formerly Water Resources Division) |
| WRRI | Water Resources Research Institute |
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