Nitrogen and phosphorus inputs from fertilizer and manure in the Continental United States, 2002-2017

This dataset contains tables of estimated fertilizer and manure nutrient inputs in kilograms to individual stream catchments of the continental United States from the National Hydrography Dataset Plus Version 2.1 (McKay and others, 2012). These data were downscaled from county-level estimates of nitrogen and phosphorus inputs from Falcone (2021) by allocating mass of applied nutrients to appropriate land-cover from the National Land Cover Dataset and summarizing by catchment. These data were compiled for the years 2002, 2007, 2012, and 2017. This data release contains 8 comma separated variable tables that can be linked to the NHD Plus v2 dataset using the COMID unique identifier. Four of these tables contain information on total nitrogen and total phosphorus from fertilizer applications on agricultural and developed lands. The remaining 4 tables contain information on total nitrogen and total phosphorus from confined and unconfined animal manure sources.

Data files in this data release are as follows:

file name
description

fert_manure_data_release.xml
detailed metadata file

ag_tn_cman.csv
total nitrogen from agricultural confined manure sources

ag_tn_fert.csv
total nitrogen from agricultural fertilizer sources

ag_tn_uman.csv
total nitrogen from agricultural unconfined manure sources

ag_tp_cman.csv
total phosphorus from agricultural confined manure sources

ag_tp_fert.csv
total phosphorus from agricultural fertilizer sources

ag_tp_uman.csv 
total phosphorus from agricultural unconfined manure sources

de_tn_fert.csv
total nitrogen from developed fertilizer sources

de_tp_fert.csv
total phosphorus from developed fertilizer sources