This study aims to describe the indigenous knowledge of farmers at Nagari Padang laweh Malalo (NPLM) and their adaptability to climate change. Not only is water scarcity feared, but climate change is also affecting their food security. Local food security can be achieved if biodiversity in their surrounding area is suitable for the local needs. The study was conducted by using Participatory Rural Appraisal (PRA) such as observation and discussion. The combination of in-depth interview, life history, semi-structure questionnaire, pictures, mapping and expert interviews was implemented. Data was analysed by using MAXQDA 10 and F4 audio analysis software. The result shows that the awareness of the people and scarcity of water conditions has allowed the people of NPLM to face this challenge with wisdom. Aia adat (water resources controlled and regulated by custom) is one of their strategies to distribute the water. The general rule is that irrigation will flow from 6 pm – 6 am regularly to all farmland under the supervision of kapalo banda. When rains occur, water resources can be used during the day without special supervision. They used traditional knowledge to manage water resources for their land and daily usage. This study may be helpful for researchers and other farmers in different regions who encounter water scarcity.

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