Rock catchments

Wendo Wa Mwau rock catchment Rock catchments utilise the surface run-off of water from flat rocky outcrops on hilltops. By building channels around the rock, rainwater is guided into a pipeline that supplies one or more water tanks.

Since 2002, Sand Dams Worldwide has supported communities to build 15 rock catchments, with each one able to collect up to 104,000 litres per tank for domestic use.

Could you donate today and supply more communities with the tools, hardware, support and guidance they need to transform their own lives with lifelong access to clean water?

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£30

could provide a farmer with drought-resistant seeds, so they can feed and support their family.

£60

could provide a roll of barbed wire to reinforce a sand dam, anchoring it to the bedrock.

£100

could provide 500 seedlings and a spray pump, to protect the trees from insects

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School water tanks

Water tanks store rainwater collected from the roof of schools. A typical school water tank can collect up to 104,000 litres of water, and they refill every rainy season. Each water tank can last over 25 years and require little maintenance. Each one provides water for generations of children.
Sand dam road crossings

At Sand Dams Worldwide we believe incorporating the principles of sand dam technology with low volume road crossing designs will deliver a more robust and cost-effective rural roads infrastructure.

We support communities to build sustainable sand dams in some of the poorest, drought-stricken regions across our world.
What is a sand dam?
Donate

Please donate what you can to transform lives and land with sand dams and clean water.
Reversing land degradation and desertification

Conservation of the environment is critical to the economic development of people living in drylands.
Watch how sand dams work

Film explaining how sand dams work and their potential impact in the world's drylands
Act Now: Tackle Food Crisis With Sand Dams

Support dryland communities to overcome food shortages, and ensure they can grow enough food to eat and sell. It all starts with ensuring they have access to water. That’s where sand dams come in.
The challenge

Find out what are drylands, why they are they are such harsh regions to live, how sand dams are applicable in drylands and what difference they can make to over 40% of the world's land surface.
1 million sand dams for 0.5 billion people by 2050

Read about our plan to directly support other organisations to build sand dams, in turn, realising our vision to support millions of the world’s poorest people by helping them to transform their own lives through water and soil conservation in drylands.
Sand dam manual

For everything you need to know about building sand dams, click here to read (and download for free!), Sand Dams: A Practical & Technical Manual.
Our approach

Find out more about Excellent's approach, from working with self-help groups to why we partner we on-ground, local organisations.