Conversion Factors, Datums, and Abbreviations and Acronyms
Conversion Factors
| Multiply |
By |
To obtain |
| Length |
| centimeter (cm) |
0.3937 |
inch (in.) |
| millimeter (mm) |
0.03937 |
inch (in.) |
| kilometer (km) |
0.6214 |
mile (mi) |
| Area |
| square meter (m2) |
0.0002471 |
acre |
| square kilometer (km2) |
247.1 |
acre |
| square kilometer (km2) |
0.3861 |
square mile (mi2) |
| Mass |
| kilogram per year (kg/yr) |
2.205 |
pound per year (lb/yr) |
| Application rate |
| kilograms per hectare per year [(kg/ha)/yr] |
0.8921
|
pounds per acre per year [(lb/acre)/yr] |
| kilograms per square kilometer per year [(kg/(km2)/yr] |
0.008921 |
pounds per acre per year [(lb/acre)/yr] |
| Flow |
| cubic meter per second (m3/s) |
35.32 |
cubic foot per second (ft3/s) |
Datum
Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).
Altitude, as used in this report, refers to distance above the vertical datum.
Abbreviations and Acronyms
| CLRW |
Clearwater River basin |
| CMAQ |
Community Multiscale Air Quality |
| HUC6 |
six-digit Hydrologic Unit Code |
| MCOL |
Middle Columbia River basin |
| NAWQA |
National water-Quality Assessment Program |
| NHD |
National Hydrography Data set |
| NLCD |
National Land Cover Database |
| NLLS |
nonlinear least squares regression
|
| NOCR |
northern Oregon coast
|
| NPDES |
National Pollutant Discharge Elimination System |
| PNW |
Pacific Northwest |
| RMSE |
root mean squared error
|
| SPARROW |
Spatially Referenced Regression on Watershed attributes model
|
| SPOK |
Spokane River basin
|
| TMDL |
Total Maximum Daily Load
|
| TN |
total nitrogen
|
| TP |
total phosphorus
|
| USEPA |
U.S. Environmental Protection Agency |
| USGS |
U.S. Geological Survey |
| WACR |
Washington coast |
|
First posted July 17, 2013
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