About us What we do 1 million sand dams for 0.5 billion people by 2040 Sand Dams Worldwide (formerly Excellent Development) plans to directly support other organisations to build 100 sand dams every year by 2020, increasing to 200 every year by 2025; 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. Read about our strategy here: Click here to read and download. This document is also available in Portuguese, Spanish and French, translated by our friends at Translators Without Borders. Note: this document is currently be revised. To receive news when the new edition is published, please sign up to our mailing list here.