The main provider of data and the institutional partners for these statistics include the environmental, natural resources and wildlife authorities, and the government agency responsible for hunting. Non-detriment findings", avai lable from https://cites.unia. Policymakers need statistics on water resources, their abstraction, use and returns for many reasons, including to estimate the amount of available water resources, monitor abstraction from key water bodies to prevent overutilization, ensure equitable usage of abstracted water, and track the volume of water returned to the environment.