International Rainwater Harvesting Alliance
The International Rainwater Harvesting Alliance (IRHA) is a Swiss non-governmental organisation based in Geneva since 2002.

Women-centric approach to enhance resilience in Kavre district, Nepal
This solution is based on The Resilient Mountain Villages (RMV) approach, which was developed by the International Centre for Integrated Mountain Development (ICIMOD). Since 2014, the approach has been applied in a pilot project in eight villages in Nepal by the Center for Environment and Agricultural Policy Research, Extension and Development (CEAPRED).
Rainwater harvesting and greenhouses for smallholder resilience, Colombian Andes
This Solution Story describes how rainwater harvesting and greenhouses have been used to enhanced the resilience of smallholder farmers in the Colombian Andes.
Mountains ADAPT: Solutions from East Africa
The Mountains ADAPT: Solutions from East Africa booklet showcases adaptation solutions proven to be successful in response to specific issues caused or accelerated by climate change that negatively affect mountain communities’ livelihoods and ecosystems. The publication includes Burundi, Kenya, Rwanda, South Sudan, the United Republic of Tanzania and Uganda.
Mountains ADAPT: Solutions from the South Caucasus
The Mountains ADAPT: Solutions from the South Caucasus booklet showcases adaptation solutions proven to be successful in response to specific issues caused, or accelerated by, climate change that negatively affect mountain communities’ livelihoods and ecosystems. The publication covers Armenia, Azerbaijan, and Georgia.
Community Action to Address Water Scarcity in Barangay San Julian, Janiuay, Iloilo, Philippines
This case study describes how community members of Barangay San Julian have taken collective action to address water scarcity through the establishment of a community-managed water system and rainwater harvesting facility.
Village Development Plan Helps People in Sumberagung to Fight Landslides and Drought
This case study describes how mainstreaming climate resilience in village planning and budgeting has increased the resilience of the people in Sumberagung to landslides and drought.
Enhancing Climate Change Resilience of Rural Communities Living in Protected Areas of Cambodia
This project is building climate adaptation near five community protected forests across Cambodia.
Comoros - Ecosystem-based Adaptation
This project is helping the government to build climate resilience in 15 locations across three Comorian islands.
Tanzania: Ecosystem-based Adaptation
Two projects were implemented to address adaptation needs in Dar-es-Salaam and the following coastal districts: Pangani, Rufiji, Bagamoyo, and Zanzibar.
Large Scale Ecosystem-based Adaptation in The Gambia
UN Environment and the government of Gambia have launched the country’s largest adaptation project, which aims to develop a sustainable natural resource-based economy.
Rainwater harvesting system for small-scale irrigation
This case study discusses the use of an innovative and cost-efficient roof catchment rainwater harvesting system for off-season small-scale irrigation developed by IDE Honduras and Ennos AG.
Building a Climate-Resilient City: Water supply and sanitation systems
This policy brief looks at measures that cities can take to improve water supply and sanitation systems in order to build their resilience to climate change impacts.
Adaptation to Climate Change in Mahbubnagar district, Telangana
This project aims to develop strategies for reducing negative impacts on rain-fed agriculture production systems, and bridging adaptation activity at the national level with that at the local level.
PHD Rural Development Foundation
The Progress Harmony Development Chamber of Commerce and Industry, established in 1905, is a proactive and dynamic multi-State apex organisation working at the grass-root level and with strong na
Yachaykusun: Lessons on climate change from the Andes
Restoring reservoirs in rural Moldova
Moldova is heavily agriculture-dependent, yet current water reserves are already classified as “insufficient”. This study documents the impact of two grant-supported pilot reservoir projects.
The Experience of Nomads in Blue Nile Area
This case study describes how Nomads in Sudan have adapted to climate change and regional insecurity by forming collaborative agreements with farmers that benefit both parties.
RainGrid
RainGrid is a lot-level stormwater utility that offers a smarter, more cost-effective alternative to conventional stormwater infrastructure.
Helping Communities Cope with Climate Change in the Bay of Bengal
Paribartan works with communities to create plans to address climate impacts, improve ability to cope with these impacts, test innovative practices and share lessons for advocacy and replication.
A holistic approach to community-based adaptation in Namibia
Namibia is plagued with a dry climate and poor soils and the country’s small-scale farmers produce the lowest agricultural yields in the world. Climate change exacerbates these realities.
Communities in Jamaica adopt rainwater harvesting to cope with water scarcity
Jamaica's Pleasant Valley and White Chapel towns are nationally-recognized hotspots. Irregular rainfall and rising temperatures lead to water scarcity and crop failure.
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