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DERIVING UNIT HYDROGRAPHS FOR SMALL CATCHMENTS
Author(s) -
Gardner C. M. K.,
Wilcock D. N.
Publication year - 2003
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2003.tb00476.x
Subject(s) - hydrograph , hydrology (agriculture) , storm , flood myth , environmental science , drainage basin , northern ireland , catchment hydrology , physical geography , geology , meteorology , geography , cartography , geotechnical engineering , ethnology , archaeology , history
An examination of 190 storm events in seventeen small Northern Ireland catchments, along lines developed by the UK Institute of Hydrology, shows that the time‐to‐peak of the instantaneous unit hydrograph can be estimated from catchment characteristics and from the time between the centroid of mass of a flood‐producing rainfall event and of the resulting peak flow, but that equations calibrated on British data overestimate the time‐to‐peak. This might be due to the distinctive hydrology of Northern Ireland.