Source, Movement, and Effects of Nitrogen and Phosphorus in Three Ponds in the Headwaters of Hop Brook, Marlborough, Massachusetts

U.S. Geological Survey, Water Resources Investigations Report 84-4017

John C. Briggs, William D. Silvey

Table of Contents

Abstract

Introduction

Purpose and scope

Acknowledgments

Description of the study area

Methods of study

Streamflow

Water-quality

Nitrogen

Organic nitrogen

Ammonia nitrogen

Nitrite nitrogen

Nitrate nitrogen

Total nitrogen

Phosphorus

Orthophosphate phosphorus

Total phosphorus

Biological characteristics

Phytoplankton

Algal growth potential

Alternatives for water quality in the pond system

Summary

References

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