The U.S. Geological Survey (USGS) National Water Quality Assessment Program (NAWQA) began regional stud-ies in 2003 to synthesize information on nutrient concentra-tions, trends, stream loads, and sources. In the northeastern United States, a study area that extends from Maine to central Virginia, nutrient data were evaluated for 130 USGS water-quality monitoring stations.
| Author: U. S. Department of the Interior |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Jul 23, 2014 |
| Number of Pages: 186 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1499622783 |
| ISBN-13: 9781499622782 |