The Rational Method is one of the most widely used methods for estimating peak discharge in small catchments. There are at least three forms of the Rational Method in use: deterministic, stochastic, and hybrid Rational Methods. These different forms are associated with distinct definitions of the...
Runoff coefficients with return periods of 2, 5, 10, 25, 50 and 100 years were determined for these sub-basins and iso-coefficient curves were plotted. The results showed that computed runoff coefficients were less than the values given in the literature because they are determined from ...
The rational method applied to small rural catchments in the south west of Western Australia Using the statistical interpretation of the rational method, runoff coefficients have been derived for 36 jarrah forest catchments in the south west of Wes... DJ Flavell - 《Hydrology》 被引量: 3发表:...
关键词: Forecasting Runoff Coefficients Rainfall-runoff relationships Hydrographs 会议时间: 1980 收藏 引用 批量引用 报错 分享 全部来源 求助全文 digitalcommons.utep.edu cedb.asce.org 相似文献Design flood estimation in ungauged catchments: A comparison between the probabilistic rational method and ...
Composite basins with nonuniform slopes, roughness properties and runoff coefficients are included. In order to employ the proposed equations, the rainfall intensityduration relationships and the physical characteristics of the basin should be specified. Unlike empirical formulas used for the same purpose,...
In recent years, there has been a growing recognition of the need for site-specific data and parameters to characterize the hydrologic response and behavior of the catchments. The study aims to estimate and compare the event runoff coefficients and curve numbers, derived from recorded rainfall-runo...
The derived relationship was then utilized to provide effective estimations of the rational method runoff coefficients, which constitutes one of the main prescribed methodologies for water resources planning, and management, as a function of initial moisture content and total rainfall depth. Furthermore,...
An analysis of the rainfall-runoff relationship and subsequently an assessment of relevant runoff coefficients should best be based on actual, simultaneous measurements of both rainfall and runoff in the project area. Models that describe watershed hydrology are classified according to several criteria. ...
Event runoff coefficients are defined as the ratio of precipitation depth to direct runoff depth during an event, i.e. they are characteristic values for catchment response. We study the response behaviours of small and mediums sized gauged watersheds in the low mountain ranges of Rhineland-...
They found that measuring soil particle-size distribution and water retention characteristics on 30 undisturbed samples was sufficient to estimate scaling coefficients to upscale the soil water retention curve to the entire watershed. Accuracy was improved when retention curves were estimated separately for...