The Avon River Aboiteau and Windsor Causeway replaced 26 km of dyke and 36 individual aboiteaux when they were constructed in 1968-70. Since that time much of the older dykes and aboiteaux infrastructure have been removed or naturally degraded. The current Avon River Aboiteau and Windsor Causeway system protects approximately 1,400 hectares (3,400 acres) of agricultural land, and provides flood protection to the Town of Windsor and nearby communities in the Municipality of West Hants. The aboiteau is near the end of its lifespan and requires upgrading to continue to protect lands upstream.