The Ōrāri Temuka Ōpihi Pareora (OTOP) water zone has hill-fed braided rivers and coastal areas with strong and complex links between ground and surface water. It is vulnerable to dry periods. Many wetlands have been drained but pockets of unique natural value have survived.

📢 From 2026, new local leadership groups will replace the Water Zone Committees, building on their legacy of community collaboration.