A semi-distributed parallel-type linear reservoir rainfall-runoff model and its application in Taiwan
✍ Scribed by Lung-Sheng Hsieh; Ru-Yih Wang
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 417 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0885-6087
No coin nor oath required. For personal study only.
✦ Synopsis
The main purpose of this paper is to introduce a semi-distributed parallel surface rainfall-runo conceptual model. In this paper, a general solution of the instantaneous unit hydrograph (IUH) has been derived successfully for N linearly connected reservoirs, each having a dierent storage constant. The solution is a function of geomorphologic parameters, meteorologic factors and roughness coecients. The model also takes into account the hydrologic response which is in¯uenced by out¯ow downstream of a reservoir. For calibration, the shued complex evolution (SCE) algorithm is used to search for the global optimal parameters of the model. Because of the parallel structure, the mean roughness parameter of the channel becomes a ``conceptual'' parameter without a real physical meaning. To evaluate the adaptability of the model adopted, three watersheds around the city of Taipei in Taiwan were chosen to test the eectiveness of the model. The study provides an appropriate rainfall-runo model for planning ¯ood mitigation in Taiwan.