Next Article in Journal
General Rainfall Patterns in Indonesia and the Potential Impacts of Local Seas on Rainfall Intensity
Previous Article in Journal
Estimating the Impact of Inflow on the Chemistry of Two Different Caldera Type Lakes Located on the Bali Island (Indonesia)
Article Menu

Export Article

Open AccessArticle
Water 2015, 7(4), 1731-1750; doi:10.3390/w7041731

Assessing the Influences of a Flood Diversion Project on Mitigating River Stage, Inundation Extent and Economic Loss

1
National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan
2
Department of Civil and Disaster Prevention Engineering, National United University, Miaoli 36063, Taiwan
3
Taiwan Typhoon and Flood Research Institute, National Applied Research Laboratories, Taipei 10093, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Athanasios Loukas
Received: 5 February 2015 / Revised: 10 April 2015 / Accepted: 13 April 2015 / Published: 22 April 2015
View Full-Text   |   Download PDF [7318 KB, uploaded 9 June 2015]   |  

Abstract

Taiwan usually suffers severe inundation disasters during typhoons and strong rainstorms, and therefore flood mitigation is considered an important issue. To assess the effect of the Yuansantze flood diversion tunnel (YFDT) on flood mitigation at the upstream reaches of the Keelung River, a three-dimensional, unstructured grid, Finite-Volume, primitive equation Community Ocean Model (FVCOM) was used. The model was validated with observed data for water levels and inundation extent during different typhoon events. The simulated results show a good agreement with field measurements of water level with three historical typhoon events but underestimated the measured inundation extent with Typhoon Nari. The validated model was then applied to assess the flood mitigation and economic loss with the YFDT. The results demonstrated that the river level decreases approximately 3 m with the YFDT and that the inundation extent decreases by more than 50% in the Ruifang District with YFDT. The YDFT aims to not only mitigate hazards but also reduce economic losses. The average annual expected benefit after construction of the YFDT is approximately 184 million NTD in the Ruifang District. View Full-Text
Keywords: flood mitigation; Yuansantze flood diversion tunnel; unstructured grid; Keelung River; economic loss; FVCOM flood mitigation; Yuansantze flood diversion tunnel; unstructured grid; Keelung River; economic loss; FVCOM
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Chen, W.-B.; Liu, W.-C.; Fu, H.-S.; Jang, J.-H. Assessing the Influences of a Flood Diversion Project on Mitigating River Stage, Inundation Extent and Economic Loss. Water 2015, 7, 1731-1750.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top