Learning Visits

What You'll Learn

During your visit, you will:

• Learn how sand dams are designed and constructed.
• Understand how sand dams capture and store water naturally beneath layers of sand.
• Explore the role of community participation in every stage of construction and maintenance.
• Discover how improved water access supports agriculture, education, health, and local economies.
• Hear inspiring stories from community members whose lives have been transformed by reliable access to water.
• Gain practical insights into climate resilience, environmental conservation, and sustainable water management.

How a Sand Dam Works

A sand dam is a reinforced concrete wall built across a seasonal river. During the rainy season, flowing water carries sand and sediment downstream. The heavier sand settles behind the dam while finer silt continues downstream. Over several rainy seasons, the accumulated sand stores large amounts of water within its pores, creating a natural underground reservoir.

Because the water is stored beneath the sand, it is protected from evaporation and contamination. Communities access this water through shallow wells, hand pumps, or protected water points throughout the year, providing a reliable source of clean water for domestic use, livestock, irrigation, and other productive activities.

Sand dams also recharge groundwater, reduce soil erosion, restore vegetation, improve biodiversity, and strengthen communities against the impacts of drought and climate change.