Erik Nissen-Petersen

• Water from roofs
• Rain catchment and water supply in rural Africa
• Rainwater catchment systems for domestic supply
• Subsurface & sand-storage dams
• Water for rural communities
• Water from dry riverbeds
• Water from roads
• Water from rock outcrops
• Water from sand rivers
• Water from small dams
• Water supply by rural builders
• Water surveys and designs