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Data Series 820

National Water-Quality Assessment Program

Nutrient Load Summaries for Major Lakes and Estuaries of the Eastern United States, 2002

By Michelle C. Moorman, Anne B. Hoos, Suzanne B. Bricker, Richard B. Moore, Ana María García, and Scott W. Ator

Thumbnail of and link to report PDF (61.8 MB)Abstract

Nutrient enrichment of lakes and estuaries across the Nation is widespread. Nutrient enrichment can stimulate excessive plant and algal growth and cause a number of undesirable effects that impair aquatic life and recreational activities and can also result in economic effects. Understanding the amount of nutrients entering lakes and estuaries, the physical characteristics affecting the nutrient processing within these receiving waterbodies, and the natural and manmade sources of nutrients is fundamental to the development of effective nutrient reduction strategies. To improve this understanding, sources and stream transport of nutrients to 255 major lakes and 64 estuaries in the Eastern United States were estimated using Spatially Referenced Regression on Watershed attributes (SPARROW) nutrient models.

First posted January 31, 2014

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Suggested citation:

Moorman, M.C., Hoos, A.B., Bricker, S.B., Moore, R.B., García, A.M., and Ator, S.W., 2014, Nutrient load summaries for major lakes and estuaries of the Eastern United States, 2002: U.S. Geological Survey Data Series 820, 94 p., http://dx.doi.org/10.3133/ds820.

ISSN 2327-638X (online)



Contents

Abstract

Introduction

Understanding the Assessment Approach (SPARROW Model)

Nutrient Load Summaries for Major Lakes and Estuaries

Acknowledgments

References Cited

Appendix 1. Contributing Watersheds and Nutrient Load Summaries for Major Lakes and Estuaries in the Eastern United States


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