Flash-flood procedure.

By:

Hatch, Ralph C

Contributor(s):

Material type: Text

TextLanguage: ENG Publication details: 1978Description: 33pReport number: PB-286-014/6SLSubject: Streamflow forecasts can be made by a local user with input data collected by the user or in cooperation with other agencies including the national weather service. This particular procedure was developed for use under circumstances where limited data may be available and estimates may be required. The results received from this procedure are based on defined 100-year 24-hour return period precipitation amounts from many years of data. The user must input the amount of precipitation that has fallen, the time duration in which the precipitation fell, and the basin area (or the contributing portion of the basin) over which the precipitation occurred. The purpose of this study was to develop a self-help procedure that could be quickly and easily used in estimating runoff from thunderstorms in small basins (generally less than 200 square miles). This procedure is made up of three parts: a storm rainfall/duration graph; an area graph; and a total flow chart .550.

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Books	Australian Emergency Management Library	BOOK	363.34936 HAT (Browse shelf(Opens below))	Available		005281225

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Programmed Learning Text

Technical memo.

Streamflow forecasts can be made by a local user with input data collected by the user or in cooperation with other agencies including the national weather service. This particular procedure was developed for use under circumstances where limited data may be available and estimates may be required. The results received from this procedure are based on defined 100-year 24-hour return period precipitation amounts from many years of data. The user must input the amount of precipitation that has fallen, the time duration in which the precipitation fell, and the basin area (or the contributing portion of the basin) over which the precipitation occurred. The purpose of this study was to develop a self-help procedure that could be quickly and easily used in estimating runoff from thunderstorms in small basins (generally less than 200 square miles). This procedure is made up of three parts: a storm rainfall/duration graph; an area graph; and a total flow chart .550.

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