"Money isn't everything," Alastair Morrison, of the Stockholm International Water Institute (SIWI), wrote in the latest edition of the think-tank's quarterly journal.
"Many of the most effective water-related adaptation measures are free," noted Morrison, who is the UN Development Programme Water Governance Facility Project Manager at SIWI.
Here is a list, based on some of Morrison's suggestions and community-based adaptation measures compiled by the UK-based International Institute for Environment and Development.
Floods
1. The conventional response is to build levees and walls, and in many instances this was a "practical solution", Morrison said. If you don't have the money, you could provide hazard warnings and escape routes or shelters. In a community-based approach in the Philippines, communities learnt how to draw maps to plot the most flood-prone areas and vulnerable communities. These were the first to be warned and evacuated when threatened.
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3. Raise buildings on stilts or earth mounds. This is a response rooted in traditional knowledge, Morrison pointed out. "Most houses in south-east Asia used to be raised on stilts, allowing floodwater to pass safely underneath."
4. Drawing up restrictions doesn't cost money; impose zoning restrictions and enforce them. "Inappropriate developments – those that block drainage runs, pollute watercourses, and increase rainfall runoff and downstream flooding – must be stopped," Morrison urged.
5. Press ahead with policy on improving land ownership. "Poor communities are forced to live in dangerous floodplains, on riverbanks and in ravines," Morrison said. "This is not due to a lack of overall land availability – population densities are still relatively low – but because powerful elites own most of the safe and productive areas."
Water shortages, water- and mosquito-borne diseases (malaria, dengue and yellow fever)
1. Harvest rainwater, as many NGOs and development workers have suggested.
2. Get communities to maintain their sources of water, whether a well or a hand-pump.
3. Instead of looking for costly drainage options to keep diseases like malaria at bay, get communities to dig trenches and build reservoirs to store flood water.
Landslides
1. If you don't have a budget for concrete retaining walls, plant vetiver grass (Chrysopogon zizanioides), a non-invasive Indian clump grass cultivated for centuries for essential oil. The roots of the grass and its dense undergrowth hold the soil in place, according to the Vetiver Network international.
But, for all risks it would make sense to have a plan to reduce the chance of a disaster, which, of course, costs nothing.
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