A system was developed to simulate the overland flow of rainfall runoff in a microgeometric model of the landscape. The landscape model was developed from normally available materials by means of a geographic data-handling system. The water flow model provides both direct rainfall and grid-to-grid flo components for every grid on the landscape. The size of the grid, the time increment for analysis, and the rainfall intensity are adjustable by the user. The surface flow is followed in an eight-nearest-neighbor microflow pattern across the landspace until the flow reaches channels within the grids. The system provides flow patterns within the watershed, effective drainage area and runoff curve numbers for every grid, and a complete flow time history for each grid. The system was developed according to an objective mathematical approaches so that it does not require extensive technical knowledge for operation; it was designed to use normally available data at reduced computer operation cost . This previously unavailable technical procedure is expected to be useful in erosion studies and as an aid in U.S. Army Corps of Engineers construction activities. Military applications include an ability to rapidly assess, for anticipated rainfall conditions, areas with potential cross-country mobility problems induced by storm runoff.

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.

"This book focuses on some of the current developments in practice and education within the construction industry towards facilitating the transformation in the digitally-built environment. In particular, from a practice perspective, developments are presented to enhance the client's understanding of digitally-enabled collaboration, interoperability and open standards, and maturity/capability and offers approaches to embedding digital construction within education"--

Get the most up-to-date and comprehensive guide to watershed analysis and management. In Watersheds: Processes, Assessment, and Management, author Paul DeBarry covers aspects of watershed physical processes such as assessing, classifying, and evaluating a watershed; using GIS models for watershed assessment; and effectively planning for future use and demands. He covers precipitation, ecology, geology, soils, geomorphology, hydrogeology, hydrology, water quality, hydraulics, GIS, data collection, planning, and management. And he takes you beyond theory so you learn to apply planning, management, GIS, and hydrologic engineering principles in real-world watershed management. This concise reference manual is ideal whether you're a scientist, biologist, geologist, engineer, planner, administrator, part of a citizens group, or a practitioner seeking to identify what is important in the watershed being studied.