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Keywords: nutrients


Chesapeake Bay Program_SAV Ecosystem Analysis Documentation 1993

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

The goal of this analysis was to estimate nitrogen loads that could be used to assess the potential impact of nitrogen uptake by eelgrass on dissolved oxygen levels in the Bay, using the Chesapeake Bay 3D computer model.  To do this, it…

Status and Assessment of Chesapeake Bay Wildlife Contamination 1992

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

As an integral component of its priority setting process, the Chesapeake Bay Program's Toxics Subcommittee has sought the expertise of Chesapeake Bay researchers and managers in developing a series of Chesapeake Bay toxics status and…

Maryland Water Quality Inventory 1986

Publication date: April 15, 1986 | Type of document: | Download: Electronic Version

The Patuxent River has been a major focal point for water quality management in Maryland for well over a decade.  As the Baltimore and Washington, D.C. metropolitan areas have encroached on the Patuxent watershed, long-time residents…

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…

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…

Chesapeake Bay Program Nutrient Reduction Strategy Reevaluation Rept #8 1992

Publication date: December 01, 1992 | Type of document:

this report is one of a series of reports prepared for the Chesapeake Bay Program Reevaluation of the Nutrient Reduction Strategy.  This report provides information on the financial cost effectiveness and nutrient removal effectiveness…

Progress Report of the Baywide Nutrient Reduction Reevaluation 1992

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

During the period between the 1983 and 1987 Chesapeake Bay Agreements, the Bay Program developed a relatively simple mathematical model that was used to devise a strategy for reducing the amount of nitrogen and phosphorus entering the…

Baywide Nutrient Reduction Strategy 1988

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

This Strategy establishes the baseline nutrient loading conditions and the year 2000 nutrient loading target for each jurisdiction.  The Strategy outlines a phased aapproach toward meeting the 40% reduction of nutrients by the year 2000…

Baywide Nutrient Reduction Strategy Progress Report 1989

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

To better quantify NPS loads and the effect of all loads on the Bay, the Chesapeake Bay Program, beginning with the research phase in 1978, has placed high priority on the development of drainage basin and tidal mainstem models of the…

Chesapeake Bay_A Framework for Action 1983

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

The Chesapeake Bay, the nation's largest and most productive estuarine system is experiencing significant stress from pollution.  In 1976, Congress directed the Environmental Protection Agency (EPA) to undertake a comprehensive study of…

Chesaapeake Bay Program Nutrient Reduction Strategy Reevaluation Report 8

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

This report is one of a series of reports prepared for the Chesapeake Bay Program Reevaluation of the Nutrient Reduction Strategy.  This report provides information on the financial cost effectiveness and nutrient removal effectiveness…

Chesapeake Bay Groundwater Toxics Loading Workshop Proceedings

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

The workshop discussed how groundwater delivers more than one-half of the freshwater that enters Chesapeake Bay.  This large volume of freshwater is transported to the Bay as base flow an as direct discharge or upwelling.  Base flow…

Nutrient Trading in the Chesapeake Bay Watershed 2001

Publication date: September 26, 2000 | Type of document: | Download: Electronic Version

The public meetings provided an opportunity for public review and comment on the Draft Nutrient Trading Guidance Document.  The document was written by the Nutrient Trading Negotiation Team, a group composed of a wide array of…

Maintaining Progress in Restoring the Chesapeake Bay Holding the Line on Nutrient Pollution April 2000

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

The 1987 Chesapeake Bay Agreement, signed by the Commonwealth of Pennsylvania, The State of Maryland, the Commonwealth of Virginia, the Environmental Protection Agency and the Chesapeake Bay Commission (the Executive Council),…

Chesapeake Bay Program Nutrient Trading Fundamental Principles and Guidelines_2001

Publication date: March 01, 2001 | Type of document:

This document presents fundamental principles and guidelines for nutrient trading the Chesapeake Bay watershed.  The Chesapeake Bay Progam convened the Nutrient Trading Negotiation Team (Negotiation Team) in June 1999 for the purpose of…

Chesapeake Bay Pprogram Nutrient Trading Fundamental Principles and Guidelines

Publication date: March 01, 2001 | Type of document: | Download: Electronic Version

this document presents fundamental principles and guidelines for nutrient trading in the Chesapeake Bay watershed.  The Chesapeake Bay Program convened the Nutrient Trading Negotiation Team (Negotiation Team) in June 1999 for the…

Nutrient-Dissolved Oxygen Dynamics in Chesapeake Bay: The roles of Phytoplankton & Micro-Heterotrophs Under Summer Conditions_1985

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

This study focused on the relationships of phytoplankton and micro-heterotrophs to the development and maintenance of anoxia in the mesohaline region of Chesapeake Bay.  A series of 14 cruises were made from February to October, 1985,…

Submerged Aquaticc Vegetation Policy for the Chesapeake Bay and Tidal Tributaries

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

Submerged aquatic vegetation is not only important as a habitat, but also because it acts as an indicator of the condition of the Chesapeake Bay.  The successful growth and reporduction of submerged aquatic vegetation can be used a s…

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…

The State of the Chesapeake Bay_1999

Publication date: October 01, 1999 | Type of document: | Download: Electronic Version

The 1995 Local Government Partnership Initiative engages the watershed's 1,650 local governments in the Bay restoration effort.  The Executive Council followed this in 1996 by adopting the Local Government Participation Action Plan and…

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…

Managing Nutrients to Prevent Pollution: Conference SSummary and Recommendations for Actions

Publication date: September 01, 1996 | Type of document: | Download: Electronic Version

The document summarizes ideas presented at the regional nutrient management conference "Managing Nutrients to Prevent Pollution" and brings forth recommendation for action.  The two-day conference held on Marych 13-14, 1996 in Solomons,…

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…

Nutrient-Dissolved Oxygen Dynamics in Chesapeake Bay: The Roles of Phytoplankton and Micro-Heterotrophs Under Summer Conditions, 1985

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

This tudy focused on the relationships of phytoplankton and micro-heterotrophs to the development and maintenance of anoxia in the mesohaline region of Chesapeake Bay.  A series of 14 cruises were made from February to October, 1985, on…

Achieving the Chesapeake Bay Nutrient Goals

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

In 1982, this Bay Agreement nutrient reduction goal was confirmed by the use of computer models, and strengthened by allocating nutrietn reduction goals to each of the ten major tributary systems of the Bay, as well as to each…

Market Based Strategies & Nutrient Trading: What you need to know

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

A central water qulity management problem in the Chesapeake Bay Watershed and its tributaries is nutrient enrichment by nitrogen and phosphorous loads from point and nonpoint sources.  The recent evaluation of the nutrient issue in the…

Status Yields and Trends of Nutrients and Sediment and Methods of Analysis for the Nontidal Data-Collection Programs, Chesapeake Bay Basin 1985-96

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

Data from more than 200 sites in nontidal portions of the Chesapeake Bay were compiled to document annual nutrient and sediment loads and trends for the period 1985 throgh 1996 as part of the 1997 Reevaluation of the Chesapeake Bay…

Nutrient Reduction Technology Cost Estimates for Point Sources in the Chesapeake Bay Watershed

Publication date: November 01, 2002 | Type of document:

the purpose nof this report is to provide costs estimates for treatment technologies associated with varying concentration levels of nitrogen and phosphorus removal from inductrial and municipal wastewater plants in the Chesapeake Bay…

Nutrient Trading In the Chesapeake Bay Watershed-Public Comments Summary

Publication date: January 01, 2001 | Type of document: | Download: Electronic Version

This document is a collective summary of the documents (both during the public meetings as well as those written) received by all jurisdictions.  The process undertaken to prodice this summary included the following steps:  1) Each…

Nutrient Trading to Maintain the Nutrient Cap in the Chesapeake Bay Watershed

Publication date: December 14, 1998 | Type of document: | Download: Electronic Version

this workshop was held om December 14, 1998.  Its purpose, as delineated on the agenda (see Appendix I) was to initiate a process to develop nutrient trading policies and guidelines to achieve and maintain the Nutrient Cap in the…

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…

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 9172 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…

Restoring a Bay Resource-Riparian Forest Buffer Demonstration Sites

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

The use of demonstration sites for riparian forest buffer establishment is one way to help accomplish the objectives of communication, education, and monitoring.  The riparian forest buffers in this document are located in agricultural,…

Chesapeake Bay Area - Nutrient Management Programs - An Overview

Publication date: March 01, 1996 | Type of document: | Download: Electronic Version

In response to Executive Council directives and the Nutrient Subcommittee charge for the development of a comprehensive and accurate BMP tracking and reporting system, the Chesapeake Bay Program is reviewing and evaluating the current…

Evaluation of Wastewater Treatment Plants for BNR Retrofits Using Advances in Technology

Publication date: September 01, 1999 | Type of document:

This project was inititaed on June 1, 1995 for the purpose of stimulating efforts towards the reduction of point source nutrient discharges to the waters of the Chesapeake Bay Watershed.  Prior to the project a few engineering firms had…

Evaluating Nutrient and Sediment Losses from Agricultural Lands: Vegetative Filter Strips

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

This report is part of a bi-state reserach effort funded by the EPA Chesapeake Bay Program between the states of Maryland and Virginia.  This report describes the Virginia project.  The Maryland project is described in another…

Biological Nitrogen and Phosphorus Removal in Oxidation Ditch and High Nitrate Recycle Systems

Publication date: August 01, 1990 | Type of document:

Full scale process modifications were conducted in an oxidaation ditch system to understand the kinetics of biological nitrogen and phosphorus removal in activated sludge systems which may use high nitrate or internal recycles.  Design…

Baywide Nutrient Reduction Strategy Progress Report-1989

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

This first progress report under the 1988  Baywiden Nutrient Reduction Strategy describes implementation progress and analytic refinements promised in the original strategy.  The Nonpoint Source Subcommittee NPS Nutrient Reduction Task…

Chesapeake Bay Nutrients, Light and SAV: Relationships Between Water Quality and SAV Growth in Field and Mesocosm Studies

Publication date: June 01, 1995 | Type of document:

The decline of submerged aquatic vegetation (SAV) in the Chesapeake Bay has been associated with light limitation resulting from changes in water quality (Kemp et al/ 1984, Orth and Moore 1983).  Eutrophication severely limits the…

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



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