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Conditional Frequency Analysis of Autocorrelated Lake Levels
Publisher: American Society of Civil Engineers
Abstract: In contrast to annual peak river flows, annual maximum lake levels often possess significant autocorrelation. The presence of autocorrelation in the time series of annual lake floods can be exploited to generate conditional ...
Model for Instantaneous Residential Water Demands
Publisher: American Society of Civil Engineers
Abstract: Residential water use is visualized as a customer-server interaction often encountered in queueing theory. Individual customers are assumed to arrive according to a nonhomogeneous Poisson process, then engage water servers ...
Leak Estimation in Water Distribution Systems by Statistical Analysis of Flow Readings
Publisher: American Society of Civil Engineers
Abstract: A new method is presented for detecting the magnitude of leaks in small residential service zones (under 1,000 homes) of a drinking water distribution system. It is assumed that continuous measurements of flow rates through ...
Effect of Media Grain Shape on Particle Straining during Filtration
Publisher: American Society of Civil Engineers
Abstract: This paper investigates how straining mechanisms of angular media (crushed limestone) provide improved filtration performance compared to rounded media (river stone). Columns of granular media were set in resin, sectioned, ...
Design of Wastewater Storage Ponds at Land Treatment Sites. II: Equilibrium Storage Performance Functions
Publisher: American Society of Civil Engineers
Abstract: A new reliability‐based method is presented to size a storage pond at a land treatment site operated for the disposal of municipal wastewater. Reliability is defined as the probability that wastewater levels remain below ...
Design of Wastewater Storage Ponds at Land Treatment Sites. I: Parallels With Applied Reservoir Theory
Publisher: American Society of Civil Engineers
Abstract: The problem of designing a wastewater storage pond at a land treatment site is similar in many respects to sizing a water supply reservoir subject to variable inflows and outflows. The similarities and differences of the ...
Partitioning and First Flush of Metals in Urban Roadway Storm Water
Publisher: American Society of Civil Engineers
Abstract: Storm water runoff from urban roadways often contains significant quantities of metal elements and solids. These anthropogenic constituents are generated mainly from traffic-related activities. Metal elements partition ...
Intensity, Duration, and Frequency of Residential Water Demands
Publisher: American Society of Civil Engineers
Abstract: Water demands at four single-family residences were monitored for a 1-yr period. About 8,000 demands per capita were recorded and converted to single equivalent rectangular pulses. Each pulse was classified by type ...
Water Treatment Units Residence-Time Distributions as Probabilistic Functions
Publisher: American Society of Civil Engineers
Abstract: A probabilistic approach to obtain theoretical residence-time distribution (RTD) functions for series of reactors with possible stagnation, bypassing, and recycle is presented. It is shown that most known RTD functions can ...
Performance of Wet Weather Treatment Facility for Control of Combined Sewer Overflows: Case Study in Cincinnati, Ohio
Publisher: American Society of Civil Engineers
Abstract: Efforts aimed at reducing pollutant loads from combined sewer overflows (CSOs) on the Muddy Creek receiving waters in Cincinnati, Ohio have been underway in recent years. This includes an investigation of the treatment ...