### Abstract

On a small reservoir catchment in mountains, the basin storage S(t) during a flood was expressed in terms of the basin discharge Q(t) and the time-varying storage parameters K(t) and P(t), in a storage equation S(t) = K(t) Q(t)^{P(t)}. Applying a nonlinear filtering technique to identification of the dynamic variations of the time-varying storage parameter P(t), the overall resistance law of flow in the catchment was estimated. The results showed that variations of the time-varying storage parameter were closely related to the generation of fast flow on the catchment, represented by gully runoff, and that P(t)-values of 0.4 and 1.0 corresponded to the generation of overland flow described by Manning's formula and to subsurface stormflow described by Darcy's equation.

Original language | English |
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Title of host publication | Proc 91 Natl Conf Irrig Drain |

Publisher | Publ by ASCE |

Pages | 60-66 |

Number of pages | 7 |

ISBN (Print) | 0872628116 |

Publication status | Published - Jan 1 1991 |

Event | Proceedings of the 1991 National Conference on Irrigation and Drainage - Honolulu, HI, USA Duration: Jul 22 1991 → Jul 26 1991 |

### Publication series

Name | Proc 91 Natl Conf Irrig Drain |
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### Other

Other | Proceedings of the 1991 National Conference on Irrigation and Drainage |
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City | Honolulu, HI, USA |

Period | 7/22/91 → 7/26/91 |

### All Science Journal Classification (ASJC) codes

- Engineering(all)

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## Cite this

*Proc 91 Natl Conf Irrig Drain*(pp. 60-66). (Proc 91 Natl Conf Irrig Drain). Publ by ASCE.