Udawalawa is a large reservoir constructed in 1960s, mainly for the purpose of irrigation. Later, around 1990s, hydropower reservoir was constructed at the upstream of the same catchment intercepting a large portion of inflows to Udawalawe. Now, due to prevailing drought, Udawalawa farmers are facing severe shortage of water for their ongoing rice cultivation. Electrical authorities are refusing to release water from the upstream reservoir and trying to secure the uninterrupted power production. What are the laws and regulations, national or international, available to tackle this situation and secure water rites of farmers.