Financial benefits of mangroves for surge prone high-value areas

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Abstract

In this paper, protection options for a high-value, industrial area along the coast of West Bengal (India) are investigated. The options are designed to protect against cyclone surges with a probability of 1/100 per year. Two alternatives are compared, a classical solution of a dike with a revetment and a solution with a mangrove belt in front of the dike. The results reveal that from a pure infrastructural cash-flow point-of-view, the mangrove solution is at least 25% cheaper than the classical solution with a rock revetment. An important finding is that this conclusion does not need the financial evaluation of the obvious additional ecological advantages that mangroves offer. It is postulated that these results are generally valid for high-value coastal areas under the attack of waves during storm surges.

Original languageEnglish
Article number2374
Number of pages17
JournalWater (Switzerland)
Volume11
Issue number11
DOIs
Publication statusPublished - 2019

Keywords

  • Cyclone surge
  • Dike
  • Levee
  • Mangrove
  • Overtopping
  • Sea defence structure
  • Storm surge

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