Now showing items 2381-2400 of 3360

    • Contingent Valuation of Some Externalities from Mine Dewatering 

      Eric J. Huszar; Noelwah R. Netusil; W. Douglass Shaw (American Society of Civil Engineers, 2001)
      We assess the economic impacts of some externalities from mine dewatering using the discrete choice version of the contingent valuation method. “Dewatering” refers to the pumping of ground water from areas surrounding ...
    • International Classification and Codification of Watersheds and River Basins 

      M. Q. I. Khan; L. Venkataratnam; B. R. M. Rao; D. P. Rao; C. Subrahmanyam (American Society of Civil Engineers, 2001)
      Watersheds and river basins, referred to as hydrologic units (HUs) are independent of territorial boundaries, and therefore compel the partners representing all the nations or other administrative units within an HU to ...
    • Engineering Approach for Tier 2 RBCA Evaluations at NAPL-Contaminated Sites 

      David Tomasko; Gustavious P. Williams; James P. Butler (American Society of Civil Engineers, 2001)
      Groundwater contaminated with non-aqueous-phase liquids (NAPLs) poses human health risks and evaluation of these risks requires estimated groundwater NAPL concentrations. Site NAPL concentrations are typically evaluated ...
    • Sensitivity of Optimal Groundwater Remediation Designs to Residual Water Quality Violations 

      Amy B. Chan Hilton; Teresa B. Culver (American Society of Civil Engineers, 2001)
      This work explores the sensitivity of optimal remedial design policies and their associated costs to the residual constraint violation, which is the sum of any small violations in constraints that may occur over all points ...
    • Citations, Counts, Journal Impact Factors, and Promotion 

      Richard H. McCuen (American Society of Civil Engineers, 2001)
    • Reliability-Based Optimal Design of Water Distribution Networks 

      T. T. Tanyimboh; P. Kalungi; Chengchao Xu; Ian C. Goulter (American Society of Civil Engineers, 2001)
    • Assessing Water Availability under a Water Rights Priority System 

      Ralph A. Wurbs (American Society of Civil Engineers, 2001)
      The Texas Natural Resource Conservation Commission, its partner agencies, and contractors are conducting a statewide Water Availability Modeling (WAM) Project pursuant to Senate Bill 1 enacted by the Texas Legislature in ...
    • Identifying Cause of Declining Flows in the Republican River 

      Jozsef Szilagyi (American Society of Civil Engineers, 2001)
      The Republican River, shared by three states, Colorado, Nebraska, and Kansas, has yielded depleted streamflow at the Nebraska-Kansas border for about 20 years when compared to values preceding 1970. Based on model results ...
    • Modeling Klamath River System Operations for Quantity and Quality 

      Sharon G. Campbell; R. Blair Hanna; Marshall Flug; John F. Scott (American Society of Civil Engineers, 2001)
      Alternative water management scenarios for a portion of the mainstem Klamath River from Keno, Oregon, to Seiad Valley, California, were evaluated using computer models of water quantity (MODSIM) and quality (HEC-5Q). These ...
    • Modeling the Effects of Tripton on Water Clarity: Lake Champlain 

      Steven W. Effler; Rakesh K. Gelda; Jay A. Bloomfield; Scott O. Quinn; David L. Johnson (American Society of Civil Engineers, 2001)
      The development, testing, and application of a probabilistic modeling framework for Secchi disc (SD) transparency that resolves the effects of several light-attenuating constituents, including phytoplankton biomass [as ...
    • Flood-Warning Decision-Support System for Sacramento, California 

      David T. Ford (American Society of Civil Engineers, 2001)
      An automated flood-warning decision-support system (FW-DSS) increases flood warning lead time for Sacramento County, California, and thus has the potential to save lives and reduce flood damage. The FW-DSS components measure ...
    • Simulation of a Costa Rican Watershed: Resolution Effects and Fractals 

      Jeffrey D. Colby (American Society of Civil Engineers, 2001)
      Simulation of runoff from the Navarro watershed in Costa Rica was undertaken using the U.S. Geological Survey's Precipitation Runoff Modeling System, developed and operated within the Modular Modeling System. A geographic ...
    • Decision Support System for Surface Water Planning in River Basins 

      K. Ito; Z. X. Xu; K. Jinno; T. Kojiri; A. Kawamura (American Society of Civil Engineers, 2001)
      A decision support system (DSS) for the integration of hydrologic process modeling and risk evaluation of the surface water management alternatives in a river basin is developed. The DSS, named CTIWM, is aimed at supporting ...
    • The Wrong Paradigm—Why Water Distribution Optimization Doesn't Work 

      Thomas M. Walski (American Society of Civil Engineers, 2001)
    • Success Stories of Brevard County, Florida Stormwater Utility 

      Gordon England (American Society of Civil Engineers, 2001)
      Brevard County created one of the first stormwater utility programs in Florida in 1990. As a pioneering utility, there were no examples to follow to determine the functions and policies for a stormwater utility. Many lessons ...
    • Sewer and Tank Flushing for Sediment, Corrosion, and Pollution Control 

      Chi-Yuan Fan; Richard Field; William C. Pisano; James Barsanti; James J. Joyce; Harvey Sorenson (American Society of Civil Engineers, 2001)
      This paper presents an overview of causes of sewer deterioration together with a discussion of control methods that can prevent or arrest this deterioration. In particular, this paper covers inline and combined sewer ...
    • Street-Surface Storage for Control of Combined Sewer Surcharge 

      Robert W. Carr; Carolyn Esposito; Stuart G. Walesh (American Society of Civil Engineers, 2001)
      This paper describes the use of street storage systems to prevent combined sewer surcharging and mitigate basement flooding. A case study approach, based primarily on two largely implemented street storage systems, is used ...
    • Optimal Scheduling of Water Pipe Replacement Using Genetic Algorithms 

      G. C. Dandy; M. Engelhardt (American Society of Civil Engineers, 2001)
      Like most other utilities, water authorities must manage many aging capital assets that are in varying degrees of deterioration; some of which are nearing the end of their useful lives. The annual funds available to the ...
    • Low-Impact Parking Lot Design Reduces Runoff and Pollutant Loads 

      Betty T. Rushton (American Society of Civil Engineers, 2001)
      An innovative parking lot at the Florida Aquarium in Tampa, Fla., is being used as a research site and demonstration project to show how small alterations to parking lot designs can dramatically decrease runoff and pollutant ...
    • New Results and Research Needs on Sediment Movement in Urban Drainage 

      Jacques W. Delleur (American Society of Civil Engineers, 2001)
      The Environmental and Water Resources Institute of ASCE has established a task committee to study the problem of sediment movements in urban drainage systems and to make recommendations for new research and for design and ...