Problems in calibrating conceptual rainfall runoff models

Paolo Bartolini, Federica Montereggio, Juan B. Valdes

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

Rainfall-Runoff Models (RRM) allow the use of most of the fast procedures (like the Rational Method) aimed at transferring the probability laws from the rainfalls to the discharges. In fact, the time of concentration of a basin (in order to select a proper rainfall from the IDF curves) as well as the infiltration rate, highly affect the estimation of the T-years discharge; it follows the necessity of calibrating an RRM, for deriving the characteristics of the basin under observation, by using the ones obtained for a similar, gaged, basin. A complete model of the rainfall-runoff transformation (i.e. a model which takes into account the underground portion of the hydrograph, even if the maximum discharge during a flood is mainly due to the surface runoff) is needed. Also it is required to handle the almost unavoidable asynchronism between rainfall and discharge records during the calibration of a model. After a particular RRM is chosen, the proposed solution (i.e., the introduction of an extra unknown, the time-lag between rainfall and discharges, and the contemporaneous fitting of a set of different events) is tested with respect to two small mountain basin in northern Italy.

Original languageEnglish (US)
Pages171-175
Number of pages5
StatePublished - Jan 1 1998
EventProceedings of the 1998 25th Annual Conference on Water Resources Planning and Management - Chicago, IL, USA
Duration: Jun 7 1998Jun 10 1998

Other

OtherProceedings of the 1998 25th Annual Conference on Water Resources Planning and Management
CityChicago, IL, USA
Period6/7/986/10/98

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

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    Bartolini, P., Montereggio, F., & Valdes, J. B. (1998). Problems in calibrating conceptual rainfall runoff models. 171-175. Paper presented at Proceedings of the 1998 25th Annual Conference on Water Resources Planning and Management, Chicago, IL, USA, .