The Tabusintac Lagoon and River Estuary is a wetland in Alnwick Parish, Northumberland County, in north-eastern New Brunswick, Canada. It was classified as a wetland of international importance on June 10, 1993. It is also a globally significant Important Bird Area for the population of common terns, and shorebirds in general, that it supports.[2] Primarily a shallow coastal estuary with gentle slopes, the 50 km2 site is underlain by various sedimentary rocks, including red sandstone and shale.[3] The lagoon system is protected from the Gulf of Saint Lawrence by a constantly shifting barrier beach and dune system
[4] that frequently blocks commonly used navigation channels.[3] It attains an elevation of no more than 8 m above sea level.
It is located on the Acadian Peninsula, and includes Tabusintac Bay and the mouth of the Tabusintac River.[5] It also contains roughly 6 km2 of peatlands, within which are numerous freshwater ponds.[6]
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