Kristianstads Vattenrike Biosphere Reserve, Wetlands biosphere reserve in Kristianstad, Sweden.

Kristianstads Vattenrike Biosphere Reserve is a large area of marshes, open waters, and riverbanks along the Helge å river in southern Sweden. The landscape consists of different habitats layered together, each supporting different forms of life.

The reserve's lowest ground lies at the bottom of Nosabyviken, a bay of Hammarsjön lake that the engineer John Nun Milner had drained in the 1860s to gain arable land for Kristianstad. That reclaimed bed now holds Sweden's lowest point, 2.41 metres below sea level. The wetland area was established as a biosphere reserve in 2005.

The name Vattenrike means "water realm", and the reserve's wetland landscape was long used for grazing and haymaking. The Skåneleden long-distance trail has a sub-trail named after Vattenrike that crosses the reserve north to south through Kristianstad, and the 6 km Linnérundan and 1.8 km Tivolirundan loop through the same ground.

The Naturum Vattenriket visitor center is the main starting point for understanding the area and planning your visit. It provides information about hiking trails, birdwatching locations, and paddling routes for different interests.

The area contains Sweden's lowest point, which sits just below sea level. This unusual feature makes it scientifically valuable and shows how wetlands store carbon naturally.