The RiUP was committed to providing environmentally sustainable solutions to the millions of poor families in Africa-Asia whose livelihoods depend on Renewable Natural Resource. RiUP approached to environmental issues, including climate change, is in keeping with the principles of sustainable development, the MDG''s (Millennium Development Goals) and DFID''s. The PAPD was conducted in Shiyalmara Pani Babosthapona Samabay Samity Ltd. at Sunamganj district and Cchoyhara Bohumukhi Samabay Samity Ltd. at Jamalganj upazila under Sylhet division of Bangladesh. It was found that the community used previous knowledge and technology in current development and it is more effective than Top-Down concept. The Haor area, alternatively referred to as the Haor basin or the Sylhet basin, is estimated to spread over an area between 4,450 km? and 25,000 km? by experts. Faster changes in inundation are expected at low temperature increases than of higher temperature changes. Also shown substantial changes in rice agriculture and cropping patterns. Reduction of increased flood hazard due to climate change requires strengthening of flood management policies and adaptation measures in Haor basin.