Urban Storm Drainage Design Hydraulic Principles
Chapter 6 of the manual on Design and Construction of Urban Storm Water Management Systems discusses the hydraulic principles and equations under which drainage system structures must...
Urban Water Issues/Strategies in the Humid Tropics
Annual rainfall volumes in the Humid Tropics are large, and the events can be quite intense, but they can also be highly variable, with periods in which little or no rainfall occurs. Streams...
Modeling 70,000 Feet of Interceptor for Aurora, CO
During preliminary design for the City of Aurora's Tollgate Creek Interceptor Sewer Improvements, the authors modeled over 70,000 linear feet of interceptor for both present...
A 1990's Strategy for Combined Sewer Improvements
On June 22, 1990, the Regional Water Quality Control Board issued the City of Sacramento a Cease and Desist Order. The Order required the City to examine the condition of, and flooding...
Conceptual Model for Performance-Based Management of Regional Water Systems
The national shift in emphasis from top-down development plan orientation in water resources, wherein the federal government assumed the dominant role, to the shared partnership approach...
Implementing Sacramento's NPDES Stormwater Permit
Between 1987 and 1990, EPA established the National Pollutant Discharge Elimination System (NPDES) permit application requirements and deadlines for stormwater discharges. During this...
Urban Drainage Design Potpourri: Avoiding Pitfalls
In the process of mastering various methods or programs used to estimate storm runoff and flow rates, fundamental principles can be overlooked or even misunderstood. Discussed herein are...
Summary of the National ASCE Task Committee on Costs-Benefits of Various Design Frequencies for Urban Drainage Systems and Flood Control
The National ASCE Task Committee on: 'COSTS-BENEFITS OF VARIOUS DESIGN FREQUENCIES FOR URBAN DRAINAGE SYSTEMS AND FLOOD CONTROL' recommends that public officials...
Experiences with Military Installation Drainage Systems
This paper presents a brief survey of experience with drainage systems found on Army bases. In addition, selected current drainage-related research topics which support Army installations...
Regional Water Supply Development in the SWFWMD
Regional water supply authorities have been formed within the Southwest Florida Water Management District in an effort to meet growing water demands of a rapidly expanding population....
Regional Water Supply Management in Southern New Hampshire
This paper presents the findings and recommendations of the Southern New Hamsphire Water Supply Study regarding regional water supply management in the study area. The study area includes...
Regional Water-Supply Development and CWA Section 404
Regional water-supply development is generally promoted because of potential cost savings and improved system management, but regionalization may also provide an opportunity to reduce...
Flood Hazard Scenarios in a Pleistocene-Holocene Basin
Technical scenarios are used to characterize the flood hazard in the Bayou Fountain Basin, an area of complex geomorphology and urbanization. Floods from three sources, 1) local precipitation,...
Urban Hydrologic Modelling: HEC's Experience
Urban hydrologic modelling began at the Hydrologic Engineering Center (HEC) with the first versions of the HEC-1 Flood Hydrograph Package. The early applications were for large, primarily...
Uncertainty in Urban Hydrologic Modeling
Uncertainty is pervasive in hydrologic modeling. Uncertainty is present in the formulation of the physical situation to be modeled, in the form of the model to be used, in the boundary...
Model Mania in Urban Hydrology: Present Dilemmas
A recent ASCE Task Committee on microcomputer software in urban hydrology has just completed its inventory of 40 software packages available at modest cost to the urban drainage engineer....
Unification in Estimation of Confidence Intervals
One area of future development needs in technology pertaining to surface runoff hydrology is the unification of techniques used by govermental agencies in the estimation of surface runoff...
Rehabilitation of Urban Pipelines
The City of Los Angeles is embarking on a replacement and rehabilitation program for the distressed portions of its sanitary sewer system which will cost in the hundreds of millions of...
1991 Update on Sanitary Sewer Rehabilitation Metropolitan Chicago
The Metropolitan Water Reclamation District of Greater Chicago (MWRDGC) owns intercepting sewers and seven water reclamation plants, but 125 local communities own the local sewers which...
Management of Subsidence in an Urban Environment
Houston, Texas is the fourth largest city in the United States and with its metropolitan area included, comprises a population of almost four million people. Large quantities of groundwater...
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