Diaccia Botrona Nature Reserve

Diaccia Botrona Nature Reserve
Riserva naturale Diaccia Botrona
IUCN category IV (habitat/species management area)
Map of Italy
LocationProvince of Grosseto, Tuscany, Italy
Nearest city
Coordinates42°46′N 10°56′E / 42.77°N 10.93°E / 42.77; 10.93
Area1,347 ha (3,330 acres)
Established27 February 1996 (1996-02-27)
Governing bodyProvince of Grosseto
Official namePalude della Diaccia Botrona
Designated22 May 1991
Reference no.522

The Diaccia Botrona Nature Reserve is a protected wetland area located in the Maremma plain between Grosseto and Castiglione della Pescaia, in Tuscany. It preserves part of the former Lake Prile (Lacus Prelius), a large historic lake that was largely drained during reclamation works initiated by the Habsburg-Lorraine rulers in the 18th century.

The area was designated a wetland of international importance under the Ramsar Convention on 22 May 1991. It was subsequently established as a nature reserve by the Province of Grosseto through Provincial Council Resolution no. 17 of 27 February 1996, pursuant to Regional Law no. 49/1995. The protected area lies within the municipalities of Castiglione della Pescaia (33.77%) and Grosseto (66.23%). It is registered under ministerial code EUAP0387 and regional code RPGR01, and has been included in the official list of regional protected areas since 2015.

It is also recognized as a site of significant botanical interest in Italy and was included in both the Natura 2000 network as SCI and SPA, important for the resting, wintering, and breeding of aquatic birds. It is the most important wetland in Tuscany for wintering ducks and also supports breeding herons and the Western marsh harrier.