Urban Water Management

Koelzer, Victor A.

doi:10.1002/j.1551-8833.1972.tb02744.x

Cited by 4 publications

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“…The U.S. National Water Commis sion has found that the national investment thus far in urban facilities has been seven tenths of total invest ments on all water resource facilities, and the disproportion of expenditures is expected to become even greater in the future [Koelzer, 1972]. As an indication of the scale of investments, for example, the commission esti mated the replacement value of exist ing storm and combined sewers at $36 billion [Koelzer, 1972], and various estimates place the cost of storm sewers to be built over the remainder of this century at more than $40 bil lion (in 1973 dollars), not including the much larger cost for controlling pollution from these systems. with an emphasis on its capability for meeting a variety of social objectives [McGauhey, 1968].…”

Section: Economic and Social Considerationsmentioning

confidence: 99%

Urban water resources

McPherson¹

1976

EoS Transactions

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When Elbridge Gerry, a native son of Marblehead, Massachusetts, affixed a signature to the declaration of Independence, Boston had only about 16,000 inhabitants. Not only has Boston grown to over 40 times that size, but there are more peole in Metropolitan Boston now than there were in all thirteen colonies in 1776. Not only has our nation grown almost 100‐fold in the past 200 years, but that growth has been increasingly urban. As may be seen in Figure 1, the United States became predominantly urban in 1920.

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Section: Economic and Social Considerationsmentioning

confidence: 99%

Urban water resources

McPherson¹

1976

EoS Transactions

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Urban Water Resources

McPherson¹

2013

Special Publications

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Problems in modeling urban watersheds

McPherson¹,

Schneider²

1974

Water Resources Research

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Modeling of urban watersheds is complicated by the complexities of the hydrologic system brought about by urbanization, model scale, and client diffusion. Modeling objectives vary widely, from storm sewer design to management of local runoff to river basin planning. Each objective requires a different approach to modeling. Current difficulties in modeling involve inherent nonlinearities in most methods of processing inputs for linear models, problems of storm definition, interconnection of urban catchment areas, and shortage of detailed rainfall-runoff water quality data for calibration. Despite handicaps, progress has been made in modeling urban watersheds and will continue to be made. LAND USE CHANGE The hydrologic system of a typical large sector of land prior to its urbanization is represented schematically in Figure 1. Complexities irhposed by urbanization can be appreciated by comparing Figure 2, an urban hydrologic system schematization, with its preurban counterpart, Figure 1 (American Society of Civil Engineers, unpublished data, 1972). (Hydrologic effects of changes in land and water use associated with the progressive stages of urbanization from 'preurban' to 'late urban' have been traced by Savini and Karometer [1961].) Figure 2 is a simplified summary of water quantities in the urban hydrologic system. (In Figure 2, 'water systems' is intended to include treatment and distribution facilities of public systems and self-supplied industrial process systems. Because only a small percentage of industrial cooling water is from groundwater sources, only surface water withdrawals and returns of this type are represented in Figure 2. Provision of flow detention storage for overland runoff is considered to be a part of 'storm drainage.' The term 'manipulated,' used twice in Figure 2, would include runoff management, such as occurs in the deliberate provision of local storage, of the 'urban land surface,' and recreation, transportation, flood control measures, and property value enhancement in connection with 'bodies of surface water.' Figure 2, and some connections/functions are not necessarily typical.) A representation of water quality aspects, which are not shown in Figure 2, would be still more complicated. Management of seawater intrusion is not included inThese two illustrations are shown here to give some indica-

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Urban Water Management

Abstract: Six areas define the functional problem of urban water management; and there is also the financial problem. Possible resolutions are integrated and areawide management and their combination. Here are detailed analyses of the conundrum's resolutions.∗

Cited by 4 publications

References 1 publication

Urban water resources

Urban water resources

Urban Water Resources

Problems in modeling urban watersheds

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