999 resultados para United States. Federal Housing Administration
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"Contract L0458"--issued cover.
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"Contract L0458"--issued cover.
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Published: -1974: U.S. Dept. of Health and Human Services, Social Security Administration, Office of Policy, Office of Research and Statistics.
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Wesley L. Jones, chairman.
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Microfiche.
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"HTO-34/5-81 (3M)"--P. 4 of cover.
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Revised to incorporate changes in the financing procedures brought about by the 1982 Surface Transportation Assistance Act.
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Mode of access: Internet.
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Mode of access: Internet.
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Fiscal year ends June 30.
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United States federal agencies assess flood risk using Bulletin 17B procedures which assume annual maximum flood series are stationary. This represents a significant limitation of current flood frequency models as the flood distribution is thereby assumed to be unaffected by trends or periodicity of atmospheric/climatic variables and/or anthropogenic activities. The validity of this assumption is at the core of this thesis, which aims to improve understanding of the forms and potential causes of non-stationarity in flood series for moderately impaired watersheds in the Upper Midwest and Northeastern US. Prior studies investigated non-stationarity in flood series for unimpaired watersheds; however, as the majority of streams are located in areas of increasing human activity, relative and coupled impacts of natural and anthropogenic factors need to be considered such that non-stationary flood frequency models can be developed for flood risk forecasting over relevant planning horizons for large scale water resources planning and management.