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Nonpoint and Point Sources of Nitrogen in Major Watersheds of the United States

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Citation

Nonpoint and Point Sources of Nitrogen in Major Watersheds of the United States; 1994; WRI; 94-4001; Puckett, Larry J.

Summary

Estimates of nonpoint and point sources of nitrogen were made for 107 watersheds located in the U.S. Geological Survey's National Water-Quality Assessment Program study units throughout the conterminous United States. The proportions of nitrogen originating from fertilizer, manure, atmospheric deposition, sewage, and industrial sources were found to vary with climate, hydrologic conditions, land use, population, and physiography. Fertilizer sources of nitrogen are proportionally greater in agricultural areas of the West and the Midwest than in other parts of the Nation. Animal manure contributes large proportions of nitrogen in the South and parts of the Northeast. Atmospheric deposition of nitrogen is generally greatest in areas of [...]

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  • Upper Colorado River Basin

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Additional Information

Identifiers

Type Scheme Key
local-index unknown wri944001
local-pk unknown 29229
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.3133/wri944001
series unknown Water-Resources Investigations Report

Citation Extension

citationTypeReport
editionRevised Mar 1994
journalWater-Resources Investigations Report
languageENGLISH

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