National Wetlands Atlas has mapped 1381 big wetlands in Punjab State. It has also identified 5049 small wetlands of less than 2.25 hectare area. Total wetland area estimated in the state is 86283 hectare which is about 1.71 per cent of its total geographic area. Out of this, with 59864 hectare the river/stream is accounts for for 69.38 per cent of the wetlands. Reservoirs/Barrages ranks second with 13.74 per cent share spread over 11858 hectare of area.. http://www.moef.nic.in/downloads/public-information/NWIA_Punjab_Atlas.pdf
There are three Ramsar sites (wetlands of International importance) in the state- Harike, Kanjli and Ropar. These wetlands are important habitats for waterfowl, fish and diversity of other flora and fauna including endangered and vulnerable species. Two other wetlands- Ranjit Sagar and Nangal are National wetlands.
Ranjit Sagar is an interstate wetland spreading over in three states (Punjab, Himachal Pradesh and J&K). There are 5 small wetlands considered as state wetlands owing to their rich biodiversity and ecological characters. These are – Keshopur-Miani Jheel, Kahnuwan Chhamb, Jastarwal Jheel, Mand Bharthala and Dholbaha Reservoir. In all, Punjab has 12 important natural and 9 man-made wetlands.