County-level estimates of nitrogen and phosphorus inputs from animal manure for the conterminous United States were calculated from animal population inventories in the 2007 and 2012 Census of Agriculture, using previously published methods. These estimates of non-point nitrogen and phosphorus inputs from animal manure were compiled in support of the U.S. Geological Survey’s National Water-Quality Assessment Project of the National Water Quality Program and are needed to support national-scale investigations of stream and groundwater water quality. The estimates published in this report are comparable with older estimates which can be compared to show changes in nitrogen and phosphorus inputs from manure over time.
Gronberg, J.M., and Arnold, T.L., 2017, County-level estimates of nitrogen and phosphorus from animal manure for the conterminous United States, 2007 and 2012: U.S. Geological Survey Open-File Report 2017–1021, 6 p., https://doi.org/10.3133/ofr20171021.
ISSN: 2331-1258 (online)
Table of Contents
- Estimating Nitrogen and Phosphorus from Animal Manure
- Description of the County-Level Nutrient-Input Dataset
- References Cited
Additional publication details
|Publication Subtype||USGS Numbered Series|
|Title||County-level estimates of nitrogen and phosphorus from animal manure for the conterminous United States, 2007 and 2012|
|Series title||Open-File Report|
|Publisher||U.S. Geological Survey|
|Publisher location||Reston, VA|
|Contributing office(s)||California Water Science Center|
|Description||iii, 6 p.|
|Online Only (Y/N)||Y|