MAPPING OCEAN WEALTH
Flood Protection by Mangroves
Expected Benefits for <%= region %>
Coastal Protection from Mangroves - Expected Benefits for <%= region %>
Mangroves act as natural defenses to reduce the risks from flooding and erosion around the world. In the Philippines, mangroves today prevent damages of more than US $1 Billion every year and protect more than 600,000 people, many of whom live in poverty.

Annual Expected Benefits From Mangroves

Annual Flood Damages Averted $<%= ANN_FLOOD_AVERT_BIL %> billion USD
Annual Flood Damages Averted/GDP <%= ANN_FLOOD_AVRT_PER %>%
Annual Averted Flooding of People <%= people %>
Coastal Protection from Mangroves - Expected Benefits for <%= region %>
Annual Expected Flood Protection Benefits by Mangroves
Representing the predicted flooding avoided to land, people, and infrastructure by keeping coral reefs intact. It is an annualized benefit of the role of reefs in flood reduction that considers local factors such as reef condition, asset distribution, and storm frequency.
THE FIVE KEY STEPS AND CRITICAL DATA NEEDED FOR THE EXPECTED DAMAGE FUNCTION APPROACH TO ESTIMATE THE FLOOD PROTECTION BENEFITS PROVIDED BY MANGROVES AND OTHER COASTAL HABITATS
Stage 1: Estimate offshore hydrodynamics (waves and surge);
Stage 2: Estimate nearshore hydrodynamics as they interact with the coastline;
Stage 3: Estimate effects of coral reef on hydrodynamics;
Stage 4: Estimate onshore flooding; and
Stage 5: Assess expected and averted damages from flooding or erosion. (Beck and Lange, 2016)
World Bank. 2016. Managing Coasts with Natural Solutions: Guidelines for Measuring and Valuing the Coastal Protection Services of Mangroves and Coral Reefs. M. W. Beck and G-M. Lange, editors. Wealth Accounting and the Valuation of Ecosystem Services Partnership (WAVES), World Bank, Washington, DC. https://www.wavespartnership.org/en/knowledge-center/managing-coasts-natural-solutions