Text Size: A  A  A

Keywords: Phosphorus


Submersed Aquatic Vegetation in the Tidal Potomac River and Estuary of Maryland, Virginia, and the District of Columbia 1982

Publication date: January 01, 1982 | Type of document: | Download: Electronic Version

As part of a comprehensive interdisciplinary study of the tidal Potomac River and Estuary, the U.S. Geological Survey studied the distrivution and abundance of submersed aquatic vegetation from 1978 to 1981.  Sites were chosen…

Perspectives on Chesapeake Bay, 1994_Advances in Estuarine Sciences 1994

Publication date: January 01, 1994 | Type of document: | Download: Electronic Version

Perspectives on the Chesapeake Bay, 1994 is the fourth in a series of literature syntheses being published by the Chesapeake Bay Program's Scientific and Technical Advisory Committee (STAV).  The purpose of the series is to provide…

Benefits of Water Quality Policies: The Chesapeake Bay

Publication date: January 01, 1997 | Type of document: | Download: Electronic Version

The purpose of this paper is to estimate the benefits of water quality legislation in the Bay region from 1972, the year the Clean Water Act was promulgated, to 1996.  Nutrients, nitrogen and phosphorous, are the dominant criteria…

Tributary Water Quality Characterization Report 1986

Publication date: November 01, 1987 | Type of document: | Download: Electronic Version

The objective of this report is to present the tributary water quality data collected from December 1985 through November 1986.  This report will focus on the James,Rappahannock, York, and Pamunkey rivers.  Individual stations located…

The Effects of Nitrogen and Sediment Loadings on Water Quality in the Virginia Western Shore Tributaries o Chesapeake Bay 1998

Publication date: March 01, 1998 | Type of document: | Download: Electronic Version

The Rappahannock, York and James Rivers each exhibit response in their estuarine receiving waters to inputs at their fall lines.  However, these response are not identical in each of the rivers, nor are they identical to Patuxent River…

Resource Limitation of Phytoplankton in the Virginia Chesapeake Bay and Tributaries Using Nutrient-Addition Bioassays 1998

Publication date: January 01, 1998 | Type of document: | Download: Electronic Version

Nutrient-addition bioassays were conducted periodically in the James, York and Rappahannock Rivera and the mainstem, lower Chesapeake Bay from 1985 through early 1993 for the purpose of describing temporal and spatial patterns of…

Maryland Department of Natural Resources Chesapeake Bay Water Quality Monitoring Program 1997

Publication date: May 01, 1997 | Type of document: | Download: Electronic Version

This is a progress report primarily summarizing 4.5 years of data from July 1992 - december 1996.  Although we present selected data covering the entire project period of August 1990 to December 1995, a previous report (Fisher etal.…

Perspectives on the Chesapeake Bay, 1990 Advances in Estuarine Sciences Part II 1990

Publication date: April 01, 1990 | Type of document: | Download: Electronic Version

As the Chesapeake Bay Program resolves some of the issues before it, other problems come to the forefront for consideration.  The 1983 Bay Agreement identified a small number of critical issues to be addressed.  The selection of these…

Water-Quality Characteristics of Five Tributaries to the Chesapeake Bay at the Fall Line, Virginia, July 1988 through June 1993

Publication date: January 01, 1995 | Type of document: | Download: Electronic Version

Development in the Chesapeake Bay region has adversely affected the water quality of the Bay.  The general degradation in the Bay has resulted in the decline of commercial fishing industries and has reduced the area of aquatic…

Tributary Water Quality 1984_1985

Publication date: September 01, 1987 | Type of document: | Download: Electronic Version

In the summer of 1984, the Environmental Protection Agency, the commonwealth of Virginia and State of Maryland instituted the mainstem water quality monitoring programs to study the Chesapeake Bay.  During this period the Commonwealth…

Report and Recommendations of the Nonpoint Source Evaluation Panel 1990

Publication date: December 01, 1990 | Type of document: | Download: Electronic Version

In March 1990, the Administrator of the U.S. Environmental Protection Agency (EPA), acting on behalf of the Executive Council of the Chesapeake Bay Program, convened this Panel to assess the effectiveness of current efforts to reduce…

Recommendations for Coordinating Phosphorus-Based Nutrient Management in the Chesapeake Bay Region 2002

Publication date: September 01, 2002 | Type of document: | Download: Electronic Version

The Agriculture Nutrient Reduction Workgroup of the Chesapeake Bay Program's Nutrient Subcommittee held a one-day conference on "Coordinating Phosphorus-Based Nutrient Management Policies in the Chesapeake Bay Region" on March 29,…

Understanding "Lag Times" Affecting the Improvement of Water Quality in the Chesapeake 2005

Publication date: January 01, 2005 | Type of document: | Download: Electronic Version

Better quantifying the "lag time" between changes in nutrient and sediment sources in the Chesapeake Bay watershed and improvement in the Bay's water quality and submerged aquatic vegetation (SAV) is critical to help resource managers…

Progress Report of the Baywide Nutrient Reduction Reevaluation

Publication date: February 01, 1992 | Type of document: | Download: Electronic Version

A number of tools are being used to determine the validity of the goal and the effects the nutrient redduction will have o the Bay's water quality:  1) computer models are being used to guide the reevaluation; 2) research, monitoring…

Chesapeake Bay Nutrient Reduction Progress and Future Directions 1997

Publication date: October 01, 1997 | Type of document: | Download: Electronic Version

Since 1983, the Chesapeake Bay Program has been working in cooperation with local governments, industry, farmers, environmentalists, conservation associations, citizen groups, and others throughout the Bay region to restore the water…

Achieving Nutrient and Sediment Reduction Goals in the Chesapeake Bay 2011

Publication date: March 01, 2011 | Type of document: | Download: Electronic Version

The Chesapeake Bay Program (CBP), a partnership among the U.S. Environmental Protection Agency, the six watershed states, and the District of Columbia, is working at federal, state, and local levels to restore the Chesapeake Bay…

Submerged Aquatic Vegetation Water Quality and Habitat-based Requirements and Restoration Targets 2000

Publication date: December 01, 2000 | Type of document: | Download: Electronic Version

The loss of submerged aquatic vegetation, or SAV, from shallow waters of Chesapeake Bay, which was first noted in the early 1960's, is a widespread, well-documented problem.  Although other factors such as climatic events and herbicide…

Trends in Nitrogen in the Chesapeake Bay (1984-1990) 1992

Publication date: June 01, 1992 | Type of document: | Download: Electronic Version

This report shows average monthly concentrations of nitrogen were essentially unchanged in the entire mainstem of the Chesapeake Bay from October 1984 to September 1990.  Total nitrogen levels showed an apparent increase of 2%, and…

CBLO Response to HQ Comments on Rock Creek Water Quality Conditions Draft Report 1990

Publication date: January 01, 1990 | Type of document: | Download: Electronic Version

This report contains comments on the draft Rock Creek report provided in a memo from Bob Zeller to Leslie Baldwin dated January 11, 1990.  First let me say that we are in total agreement with your comments questioning the…

Clean WAter Action Plan Restoring and Protecting America's Waters 1998

Publication date: February 01, 1998 | Type of document: | Download: Electronic Version

This Clean Water Action Plan provides a blueprint for restoring and protecting the nation's precious water resources.  The Action Plan provides a blueprint for restoring and protecting the nation's precious water resources.  The Action…

Baywide Nutrient Reduction Strategy 1990 Progress Report 1991

Publication date: June 01, 1991 | Type of document: | Download: Electronic Version

In response to the 1987 Chesapeake Bay Agreement, the Chesapeake Bay jurisdictions, working through a Water Quality Task Group, developed the Baywide Nutrient Reduction Strategy (Chesapeake Bay Program, 1988a) for reducing nutrients…

A Commitment Renewed_Technical Appendix 1988

Publication date: June 01, 1988 | Type of document: | Download: Electronic Version

In preparing this report, the Chesapeake Bay Liaison Office conducted an analysis to quantify the effect of BMPs  in reducing sediment and nutrient pollutant loads.  Data for the analysis were compiled in part from the Chesapeake Bay…

Dissolved Oxygen Trends in the Chesapeake Bay (1984-1990) 1991

Publication date: September 01, 1991 | Type of document: | Download: Electronic Version

Low dissolved oxygen is one of the most important problems facing managers and scientists in the restoration of Chesapeake Bay.  Oxygen is critical to the health and survivalof the Bay's aquatic life.  Faced with decreasing levels of…

Comparison of Mid-Bay and Lateral Station Water Quality Data in the Chesapeake Bay Mainstem 1993

Publication date: June 01, 1993 | Type of document: | Download: Electronic Version

Seasonal median water quality values were compared between stations in mid-Bay and lateral regions in seven east-west transects in the mainstem Chesapeake Bay.  Comparisons were made over seven years, 1985-1991, for April-October…

Chesapeake Bay A Profile of Environmental Change 1983

Publication date: September 01, 1983 | Type of document: | Download: Electronic Version

This report describes trends in water and sediment qualitty, and in the living resources of Chesapeake Bay.  The water quality parrameters evaluated include nutrients, dissolve oxygen, organic chemical compounds, and heavy metals.  The…

Chesapeake Bay and its Tributaries_Results of Monitoring Programs and Status of Resources 1998

Publication date: January 01, 1998 | Type of document: | Download: Electronic Version

This  report is part of Virginia's ongoing effort to measure progress toward Bay restoration and to assess the quality of Virginia's rivers and streams.  The information in this report offers an insight into the monitoring of our waters…

The Effect of pH on the Release of Phosphorus from Potomac river Sediment 1987

Publication date: November 01, 1987 | Type of document: | Download: Electronic Version

Recurring algal blooms in the tidal freshwater portion of the Potomac River indicate an association between chlorophyll a high phosphorus concentrations, and high pH of the water.  In the present study, the release of phosphorus from…

The Effect of pH on the Release of Phosphorus from Potomac River Sediment 1987

Publication date: November 01, 1987 | Type of document: | Download: Electronic Version

Recurring algal blooms in the tidal freshwater portion of the Potomac River indicate an association between chlorophyll a, high phosphorus concentrations, and high pH of the water.  In the present study, the relase of phosphorus from…

Estimates of Sediment Denitrification and its Influence on the Fate of Nitrogen in Chesapeake Bay

Publication date: August 01, 1987 | Type of document: | Download: Electronic Version

In general, it has been well established that nitrogen is the key nutrient most often controlling rates of primary production in estuarine water (Ryther and Dunstand 1071; Goldman et al. 1973; Boynton et al. 1982).  Based on a survey of…

Synthesis of Nutrient and Sediment Data for Watersheds Within the Chesapeake Bay Drainage Basin

Publication date: January 01, 1995 | Type of document: | Download: Electronic Version

Nutrient and sediment data collected by Federal and state agencies from 1972 through 1992 at 1,058 surface-water sites  in nontidal parts of the Chesapeake Bay Basin were compiled into a large database.  Adequate nutrient, sediment and…

Bay Barometer_2009

Publication date: January 01, 2009 | Type of document: | Download: Electronic Version

For more that 25 years, the Chesapeake Bay Program has worked to protect and restore the Bay and its 64,000-square-mile watershed.  Bay Barometer is the annual assessment of the Bay Program partnership's progresss toward meeting its…

Cost Analysis for Nonpoint Source Control Strategies in the Chesapeake Basin

Publication date: May 01, 1995 | Type of document: | Download: Electronic Version

A second Bay Agreement was developed and signed by the jurisdictions in 1987.n  The 1987 Chesapeake Bay Agreement had the benefit of several years of experience with implementation of pollutioncontrol measures in the basin and a better…

Progress Report of the Baywide Nutrient Reduction Reevaluation

Publication date: February 01, 1992 | Type of document: | Download: Electronic Version

In 1987, the parties to the original Chesapeake Bay Agreement of 1983 signed a new Chesapeake Bay Agreement.  The 1987 Chesapeake Bay Areement set specific goal-to achieve at a 40% reduction of nitrogen and phosphorus entering the…

Baywide Nutrient Reduction Strategy Progress Report

Publication date: December 01, 1989 | Type of document: | Download: Electronic Version

In 1988, the Water Quality Task Group developed the Basinwide Nutrient Reduction Strategy.  The straegy.  The strategy describes state point and nonpoint source (NPS) programs designed to meet the agreement goal of reducing nutrient…

Trends in Phosphorus, Nitrogen, Secchi Depth, and Dissolved Oxygen in Chesapeake Bay, 1984 to 1992

Publication date: August 01, 1994 | Type of document: | Download: Electronic Version

The Chesapeake Bay Program is a Federal-State partnership working to restore Chesapeake Bay.  One of its primary goals is to improve water quality and habitat conditions for living resources.  The CBP began monitoring water and habitat…

Baywide Nutrient Reduction Strategy Progress Report

Publication date: December 01, 1989 | Type of document:

In 1988, the Water Quality Task Group developed the Basinwide Nutrient Reduction Strategy.  The strategy describes state point and nonpoint source (NPS) programs designed to meet the agreement goal of reducing nutrient loads entering…

Vegetated Filter Strips for Agricultural Runoff Treatment

Publication date: August 01, 1987 | Type of document:

When data from all tests were averaged, mass losses of total suspended solids, nitrogen and phosphoru from bare source areas were reduced by 72%, 17%, and 41% respectively, by 4.6 m (15 ft) wide filters.  TSS, N, and P reductions by 9.2…

River Flow, Long-term Trends and Stream Health In the Chesapeake Bay Watershed

Publication date: May 09, 2011 | Type of document: Backgrounder | Download: Electronic Version

Backgrounder: River Flow, Long-term Trends and Stream Health In the Chesapeake Bay Watershed



Search Publications

Try our simple search to find a publication or report.


410 Severn Avenue / Suite 112
Annapolis, Maryland 21403
Tel: (800) YOUR-BAY / Fax: (410) 267-5777
Directions to the Bay Program Office
Terms of Use | Privacy Policy
©2012 Chesapeake Bay Program | All Rights Reserved