Wetland, in Nepali term “SIMSAR” means field with perennial source of water including swampy paddy fields, water logged areas and ponds. Wetlands are most productive areas for biodiversity conservation [1] .

Wetlands are a crosscutting sector, multidisciplinary in nature and therefore, require a common understanding and integrated approach towards its conservation and wise use of resources [2] . Nepal has many different types of wetlands that range from areas of permanently flowing rivers to areas of seasonal streams, lowland oxbow lakes, high altitude glacial lakes, swamps and marshes, paddy fields, reservoirs and ponds [3] . The Government of Nepal ratified the Ramsar Convention in 1987 and has incremented its contribution to the list of wetlands of international importance to currently include nine wetlands with a surface area of 34,455 hectares [4] . Out of them Koshi Tappu Wildlife Reserve is the largest and the first Ramsar site of international importance of Nepal and Mai Pokahri is a smallest and youngest Ramsar site [5] . Ramsar sites of Nepal are representing 0.19% of total area of global Ramsar sites. In Nepal 193 bird species are known to be dependent on wetlands [3] [6] -[11] and 172 species of the major wetland plants are listed by IUCN [12] . Wetland plants provide food, forage and cover for both domestic and wild animals. Wetlands are also one of the most threatened habitats because of their vulnerability and attractiveness for development [13] .

The systematic study of wetlands in Nepal is very recent [14] . In Nepal 163 wetlands are situated in Terai, and 79 in the hills and mountains [15] . Wetlands continue to be degraded and lost despite their immense eco- logical, economic and socio-cultural values [16] . The Department of National Parks and Wildlife Conservation (DNPWC) is the administrative authority of the Ramsar convention in Nepal [4] . Dhorpatan Hunting Reserve (DHR) is only one hunting reserve managed under DNPWC with no any scientific data about wetlands. In this study, we found out the preliminary information of wetlands of DHR. Main wetland sites are lakes and streams in DHR so we listed the name of streams and prepared the detail information on lakes.

Dhorpatan Hunting Reserve is rich in wetland sites. These wetlands play vital role in wetland biodiversity con- servation within the reserve. Wetlands are prime sources of drinking water for wildlife as well as humans living around the reserve; it has been supporting different diversity of culture and having religious importance with each site. The reserve supports 14 ecosystems types [20] -[22] and each wetland site provided unique support to sustain these ecosystems. During study we recorded some water birds in lakes and streams. Some lakes like

Ganaune, Pupal and Rakesh were getting polluted as well as loosing size due to siltation. It is essential to pay attention to conserve the natural beauty of these lakes and to control the pollution. A management authority should conduct the program to manage these lakes. This study found out the preliminary data about the wetlands of DHR. This information would be useful for further management of wetland in the reserve. Climate change was impacting Himalaya biodiversity [24] , we also concluded that the change in such climate in the DHR might also impact in wetlands biodiversity and its sustainability, therefore, further study on climate change impact on wetland ecosystem is necessary. The lake Sundaha is relatively large and nearer to the lake Rakshes (Monster) and supporting the wetland birds so it is necessary to study to include it in Ramsar site.

The study was possible after the financial and logistic support from the DHR office. We thank to all staffs of DHR who helped for field survey and IDEA WILD, USA for equipment support. We also thank Dr. Achyut Aryal (Institute of Natural and Mathematical Sciences, Massey University, New Zealand) for his guidance to complete this study.