Numerical Simulation of the Land use Effect on Catchment Flood Mitigation

8 pages•Published: September 20, 2018

Kaihua Guo, Jingming Hou, Feifei Liu and Yangwei Zhang

Abstract

Land use has significant impact on the hydrologic and hydraulic processes in a catchment. This work applies a hydrodynamic based numerical model to quantitatively investigate the land use effect on the flood patterns under various rainfall and terrain conditions in an ideal V-shaped catchment and a realistic catchment, indicating the land use could considerably affect the rainfall-flood process and such effect varies with the catchment terrain, land use scenario and the rainfall events. The rainfall-flood process is less sensitive for the side slope than the channel slope. For a channel slope lower than the critical value determined as 0.035-0.040 in this work, the forest located in the middle of the catchment slope could most effectively attenuate the flood peak. When the channel slope is higher than the critical one, forest located in the downstream of the catchment could most significantly mitigate the peak discharge. Moreover, the attenuation effect becomes more obvious as the rainfall becomes heavier. The research can help more reasonably guide the land use plan related to flood risk.

Keyphrases: flood, hydrodynamic model, land use

In: Goffredo La Loggia, Gabriele Freni, Valeria Puleo and Mauro De Marchis (editors). HIC 2018. 13th International Conference on Hydroinformatics, vol 3, pages 858-865.

Links:	https://easychair.org/publications/paper/7HVn
	https://doi.org/10.29007/jn43

BibTeX entry

@inproceedings{HIC2018:Numerical_Simulation_Land_use,
  author    = {Kaihua Guo and Jingming Hou and Feifei Liu and Yangwei Zhang},
  title     = {Numerical Simulation of the Land use Effect on Catchment Flood Mitigation},
  booktitle = {HIC 2018. 13th International Conference on Hydroinformatics},
  editor    = {Goffredo La Loggia and Gabriele Freni and Valeria Puleo and Mauro De Marchis},
  series    = {EPiC Series in Engineering},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2516-2330},
  url       = {/publications/paper/7HVn},
  doi       = {10.29007/jn43},
  pages     = {858-865},
  year      = {2018}}

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