Úpor–Černínovsko, Nature reserve in Hořín, Czech Republic

Úpor-Černínovsko is a nature reserve of 877.44 hectares along the Elbe between Mělník and Neratovice, made up of nine separate sections at 157–160 m above sea level. It protects floodplain forests, oxbow arms of the Elbe and wet lowland meadows, including sections named Soutok at the Vltava confluence and Zámecký les.

The reserve was created in 2014 by combining three previously separate protected areas: Úpor established in 1957, Cernínovsko in 1950, and Kelské Louky in 2002. This merger unified these adjoining sections into one management system.

The name Úpor comes from the former reserve on the Elbe's left bank opposite Kly, one of three areas merged in 2014. In the floodplain forests near Obříství, coppice management long left selected quality trees standing, and records from 1829 note replanting and sowing there. Pheasantries operated at Černínovsko and Úpor in the second half of the 20th century until they were closed.

You can explore the area by bicycle on paths following the Elbe River, though some trails get muddy during rainy periods. Bring appropriate footwear and be prepared for wet conditions if visiting after rain.

The sandy reddish loams known as Elbe red beds (labské červenky) formed here after sedimentation resumed following flood erosion around 1400 AD. The Elbe's channel was shortened by 6 km between Brandýs nad Labem and Mělník during 20th-century regulation, and removing the old Hadík and Obříství weirs lowered the water level in the eastern part of Úpor by up to 130 cm.