New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.

In 1997, New York City adopted a mammoth watershed agreement to protect its drinking water and avoid filtration of its large upstate surface water supply. Shortly thereafter, the NRC began an analysis of the agreement's scientific validity. The resulting book finds New York City's watershed agreement to be a good template for proactive watershed management that, if properly implemented, will maintain high water quality. However, it cautions that the agreement is not a guarantee of permanent filtration avoidance because of changing regulations, uncertainties regarding pollution sources, advances in treatment technologies, and natural variations in watershed conditions. The book recommends that New York City place its highest priority on pathogenic microorganisms in the watershed and direct its resources toward improving methods for detecting pathogens, understanding pathogen transport and fate, and demonstrating that best management practices will remove pathogens. Other recommendations, which are broadly applicable to surface water supplies across the country, target buffer zones, stormwater management, water quality monitoring, and effluent trading.

There has been a long-standing interest in improving Best Management Practice (BMP) monitoring within and among states. States monitoring the implementation and effectiveness of BMPs for forest operations take a variety of approaches. This creates inconsistencies in data collection and how results are reported. Since 1990 attempts have been made to develop a consistent BMP reporting methodology; the attempts have met with varying degrees of success, utility, and acceptance. Traditional monitoring focused on individual BMPs in terms of prescriptive guidelines, but this approach created inconsistent monitoring methodologies. To improve consistency and allow a more universal method for BMP monitoring, the approach to developing the protocol, described herein, focuses on the underlying S2principlesS3 which guide the design and applicability of BMPs. Shifting emphasis to the underlying principles facilitates outcome or performance-based monitoring of BMPs, which is a more universal, less subjective, and more direct means of evaluating BMP performance for protecting water quality. In turn, repeatability is improved. In this paper we discuss the development process and initial testing of a consistent repeatable BMP monitoring protocol for timber harvesting activities adjacent to water bodies. The protocol could be applied across much of the United States.