Hutovo Blato
Hutovo Blato () is a nature reserve and bird reserve located in Bosnia and Herzegovina. It is primarily composed of marshlands that were created by the underground aquifer system of the Krupa River. It is fed from the limestone massif of Ostrvo that divides the Deransko Lake and Svitavsko Lake. The reserve is on the list of BirdLife International's Important Bird Areas. It is the largest reserve of its kind in the region, in terms of both size and diversity. It is home to over 240 types of migratory birds and dozens that make their permanent home in the sub-Mediterranean wetlands surrounding Deransko Lake. In the migration season, tens of thousands of birds fill the lake and its surroundings. Wetlands The valley along the last 30 km of the Neretva River, and the river itself, comprise a remarkable landscape. Downstream from the confluence of its tributaries, the Trebižat and Bregava rivers, the valley spreads into an alluvial fan covering 20,000 hectares. The upper valley, the 7,411 hectares in Bosnia and Herzegovina, is called Hutovo Blato. Ramsar site Neretva Delta has been recognised as a Ramsar site since 1992, and Hutovo Blato since 2001. Both areas form one integrated Ramsar site