Journal American Water Works Association, Jul 1, 2016
No connections between distribution blocks No uncontrolled connections between transmission main ... more No connections between distribution blocks No uncontrolled connections between transmission main and distribution blocks No service connections or hydrant connections to transmission main Distribution block Source: based on Baker 2009 CV-check valve, PRV-pressure-reducing valve, WTP-water treatment plant T ra n s m is s io n li n e
The Environmental and Water Resources Institute (EWRI) in association with the National Center fo... more The Environmental and Water Resources Institute (EWRI) in association with the National Center for Infrastructure Modeling and Management (NCIMM), EPA, and the broad user and open-source software development communities convened an EPANET Visioning Summit in Reston Virginia on April 3-4, 2018. The mission of the summit was to develop a shared vision for the future development of EPANET. There were 35 invited participants including representatives from EWRI, EPA, NCIMM, commercial software companies, engineering consultants, water utilities, academia, and professional organizations. The Summit included keynote plenary presentations, an evening session on successful open-source programs, and a series of focused breakout sessions. Results of this Summit are summarized in this paper.
The seventh session was directed toward computer software that is designed for use in various asp... more The seventh session was directed toward computer software that is designed for use in various aspects of risk analysis. The papers presented discussed the following: application of user-friendly general software; development of problem-specific, data-driven software; and development of problem-specific software with emphasis on ease of use and program speed.
Eighth Annual Water Distribution Systems Analysis Symposium (WDSA), Mar 13, 2008
Proceedings of the Eighth Annual Water Distribution Systems Analysis (WDSA) Symposium, held in Ci... more Proceedings of the Eighth Annual Water Distribution Systems Analysis (WDSA) Symposium, held in Cincinnati, Ohio, August 27-30, 2006. Sponsored by the Environmental and Water Resources Institute of ASCE. This collection contains 180 papers considering all aspects of water distribution system analysis. Topics include: development, calibration and application of water distribution system models; emerging water quality monitoring technology and practices in distribution systems; modeling and monitoring distribution systems to address security concerns; advances in network water demand simulation and water quality prediction; utility trends in infrastructure maintenance, rehabilitation, planning and funding; and themes such as leak detection, system optimization, field studies.
Optimizing the resources for water management, 1990
This paper presents a look at what the geographic information system (GIS) technology, as applied... more This paper presents a look at what the geographic information system (GIS) technology, as applied to water resources, may look like in the year 2000. It presents a description of what a water resources engineer would want from a GIS in order to support the kind of analyses and displays needed in the field of water resources. Such a system would be user friendly, have ready access to spatial data bases containing topographic, hydrographic, demographic, and land use information, and support a wide range of modeling, analysis and display capabilities. Subjects covered include hardware, software, data structure, display, and others.
Water Resources Planning and Management: Saving a Threatened Resource—In Search of Solutions, 1992
Spatial decision support system for toxic spill modeling in the Ohio River. Walter M Grayman, Jas... more Spatial decision support system for toxic spill modeling in the Ohio River. Walter M Grayman, Jason P Heath, Richard M Males 1992. Spatial decision support systems (SDSS) are hardware-software systems that incorporate ...
The Macintosh computer is widely praised for several characteristics: high resolution graphics, c... more The Macintosh computer is widely praised for several characteristics: high resolution graphics, common program user interface, user friendliness including extensive use of a mouse, and its generally creative approach to computing. In recent years, the Macintosh has made considerable inroads into the professional arena, primarily in the areas of desktop publishing and other graphics-oriented uses. However, with the general dominance of the IBM PC, several disadvantages or adjustments may face the Macintosh user. This paper addresses several issues related to living with the Macintosh in an IBM dominated world.
A geographic information system is a computer based technology for storing and using spatial data... more A geographic information system is a computer based technology for storing and using spatial data. Many alternative methodologies exist for managing the three general types of spatial data: areal data, terrain data, and network data. The primary uses for spatial data, mapping and modeling, have been applied extensively in the area of water resources.
Journal American Water Works Association, Jul 1, 2016
No connections between distribution blocks No uncontrolled connections between transmission main ... more No connections between distribution blocks No uncontrolled connections between transmission main and distribution blocks No service connections or hydrant connections to transmission main Distribution block Source: based on Baker 2009 CV-check valve, PRV-pressure-reducing valve, WTP-water treatment plant T ra n s m is s io n li n e
The Environmental and Water Resources Institute (EWRI) in association with the National Center fo... more The Environmental and Water Resources Institute (EWRI) in association with the National Center for Infrastructure Modeling and Management (NCIMM), EPA, and the broad user and open-source software development communities convened an EPANET Visioning Summit in Reston Virginia on April 3-4, 2018. The mission of the summit was to develop a shared vision for the future development of EPANET. There were 35 invited participants including representatives from EWRI, EPA, NCIMM, commercial software companies, engineering consultants, water utilities, academia, and professional organizations. The Summit included keynote plenary presentations, an evening session on successful open-source programs, and a series of focused breakout sessions. Results of this Summit are summarized in this paper.
The seventh session was directed toward computer software that is designed for use in various asp... more The seventh session was directed toward computer software that is designed for use in various aspects of risk analysis. The papers presented discussed the following: application of user-friendly general software; development of problem-specific, data-driven software; and development of problem-specific software with emphasis on ease of use and program speed.
Eighth Annual Water Distribution Systems Analysis Symposium (WDSA), Mar 13, 2008
Proceedings of the Eighth Annual Water Distribution Systems Analysis (WDSA) Symposium, held in Ci... more Proceedings of the Eighth Annual Water Distribution Systems Analysis (WDSA) Symposium, held in Cincinnati, Ohio, August 27-30, 2006. Sponsored by the Environmental and Water Resources Institute of ASCE. This collection contains 180 papers considering all aspects of water distribution system analysis. Topics include: development, calibration and application of water distribution system models; emerging water quality monitoring technology and practices in distribution systems; modeling and monitoring distribution systems to address security concerns; advances in network water demand simulation and water quality prediction; utility trends in infrastructure maintenance, rehabilitation, planning and funding; and themes such as leak detection, system optimization, field studies.
Optimizing the resources for water management, 1990
This paper presents a look at what the geographic information system (GIS) technology, as applied... more This paper presents a look at what the geographic information system (GIS) technology, as applied to water resources, may look like in the year 2000. It presents a description of what a water resources engineer would want from a GIS in order to support the kind of analyses and displays needed in the field of water resources. Such a system would be user friendly, have ready access to spatial data bases containing topographic, hydrographic, demographic, and land use information, and support a wide range of modeling, analysis and display capabilities. Subjects covered include hardware, software, data structure, display, and others.
Water Resources Planning and Management: Saving a Threatened Resource—In Search of Solutions, 1992
Spatial decision support system for toxic spill modeling in the Ohio River. Walter M Grayman, Jas... more Spatial decision support system for toxic spill modeling in the Ohio River. Walter M Grayman, Jason P Heath, Richard M Males 1992. Spatial decision support systems (SDSS) are hardware-software systems that incorporate ...
The Macintosh computer is widely praised for several characteristics: high resolution graphics, c... more The Macintosh computer is widely praised for several characteristics: high resolution graphics, common program user interface, user friendliness including extensive use of a mouse, and its generally creative approach to computing. In recent years, the Macintosh has made considerable inroads into the professional arena, primarily in the areas of desktop publishing and other graphics-oriented uses. However, with the general dominance of the IBM PC, several disadvantages or adjustments may face the Macintosh user. This paper addresses several issues related to living with the Macintosh in an IBM dominated world.
A geographic information system is a computer based technology for storing and using spatial data... more A geographic information system is a computer based technology for storing and using spatial data. Many alternative methodologies exist for managing the three general types of spatial data: areal data, terrain data, and network data. The primary uses for spatial data, mapping and modeling, have been applied extensively in the area of water resources.
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Papers by Walter Grayman