Now showing items 3281-3300 of 3360

    • Cleaning and Lining Versus Parallel Mains 

      Thomas M. Walski (American Society of Civil Engineers, 1985)
      Cleaning and lining a water main is often an economical alternative to installing a parallel main or spending large amounts of money on energy to overcome large head losses due to friction. This paper first presents methods ...
    • Two‐Stage Urban Runoff Forecast Model 

      Gilles G. Patry; Miguel A. Marino (American Society of Civil Engineers, 1984)
      Storm‐related pollution in general, and combined sewer overflows in particular, have been found to contribute significant amounts of pollutants to receiving water bodies. Control of pollution from these nonpoint sources ...
    • Average Annual Fulfillment of Instream Uses 

      Robert L. Smith; William J. Carswell, Jr. (American Society of Civil Engineers, 1984)
      A significant demand for more formal recognition of instream water use has developed at national, regional, and state levels. This poses the need for a methodology to appraise the relative gains and losses which would arise ...
    • Marsh Enhancement by Freshwater Diversion 

      George H. Ward, Jr. (American Society of Civil Engineers, 1985)
      The delta of the Nueces River, Texas, is a low‐lying coastal marsh with dendritic distributaries and flats, infrequently inundated by flood events overbanking from the river. This study examines the feasibility of improving ...
    • Water Conservation, Recycling, and Reuse: U.S. Northeast 

      Edward Kaplan (American Society of Civil Engineers, 1984)
      This paper focuses upon present and future possibilities for water conservation, recycling, and reuse in New England and Middle Atlantic states. Telephone interviews and questionnaires sent to trade associations, public ...
    • Closure to “<i>Regionalized Flow Duration for Philippines</i>” by Rafael G. Quimpo, Angel A. Alejandrino, and Thomas A. McNally (October, 1983) 

      Rafael G. Quimpo; Angel A. Alejandrino; Thomas A. McNally (American Society of Civil Engineers, 1985)
    • Water Resource Education in the Corps of Engineers 

      Stephen M. Sheppard (American Society of Civil Engineers, 1984)
      The U.S. Army Corps of Engineers funds many water resource education programs which are available to newly employed engineers, to career Corps engineers, and to senior executive managers. Youth‐on‐Board, summer hire, and ...
    • Standard Hydrologic Exchange Format (SHEF) 

      Vernon C. Bissell; Phillip A. Pasteris; David G. Bennett (American Society of Civil Engineers, 1984)
      The Standard Hydrologic Exchange Format (SHEF) has been developed jointly by the National Weather Service (NWS) and by the Corps of Engineers North Pacific Division for use in the interagency Columbia River Operational ...
    • Optimization Model for Ground‐Water Planning 

      Robert Willis; Philip Liu (American Society of Civil Engineers, 1984)
      A planning model is presented for the optimal management of groundwater systems. The model, which is formulated as a bi‐objective optimization problem, allocates over a series of planning periods, groundwater to competing ...
    • Essential Urban Detention Ponding Considerations 

      Jonathan E. Jones; D. Earl Jones, Jr. (American Society of Civil Engineers, 1984)
      Widespread misapplication of detention ponding is probably attributable to the simplicity and attractiveness of its basic concept, combined with lack of awareness or appreciation of complex interrelationships which influence ...
    • Estimating O&M Cost When Costs Vary with Flow 

      Thomas M. Walski (American Society of Civil Engineers, 1984)
      To estimate the operation and maintenance (O&M) cost of facilities, such as pumping stations, wellfields, water and wastewater treatment plants, using some type of O&M cost function, it is necessary to know the actual flow ...
    • Output Increase From Existing Hydroelectric Plants 

      Darryl W. Davis; John J. Buckley (American Society of Civil Engineers, 1984)
      The potential for increasing the energy output of existing hydroelectric plants was investigated on a national scale. Analysis was performed on 1,288 sites (the complete inventory) for increases through enlarging powerhouses, ...
    • Water Supply for Power in Texas‐Gulf Region 

      Benjamin F. Hobbs (American Society of Civil Engineers, 1984)
      Most water‐energy assessments have considered only a few water supply types and conservation technologies. Yet utilities are not only developing traditional surface sources, but are also using ground and waste water and ...
    • Salt Gradient Ponds: Investment Timing Model 

      Trevor C. Hughes; Sergei Orlovsky (American Society of Civil Engineers, 1984)
      Salt gradient solar ponds can play an important role in management of river salinity in semiarid locations such as the Colorado River Basin. A mathematical model and solution procedure are presented for investment timing ...
    • Improve Operation or Build New Projects 

      Daniel P. Sheer; Dale D. Meredith (American Society of Civil Engineers, 1984)
      The value of existing federal water resources projects is estimated from historical construction costs. The value of improved operation of existing facilities is then estimated and shown to be at least as large as the value ...
    • Tradeoffs In Water Quality Management 

      James W. Male; Hisashi Ogawa (American Society of Civil Engineers, 1984)
      This paper describes a diagram which can be used to assess easily some of the trade offs involved in water quality management decisions. The diagram incorporates wastewater treatment costs, effluent quality, receiving ...
    • Ground‐water/Subsidence Model: A Management Tool 

      Wayne S. Pollard; Kenneth H. Johnson (American Society of Civil Engineers, 1984)
      A finite difference computer modeling system has been developed to predict future subsidence as a function of ground‐water pumpage in Harris and Galveston Counties, Texas. Two previously developed models, one for ground ...