Casnell Island

Casnell Island
Native name:
Maunganui
Casnell Island in Mahurangi Harbour
Geography
LocationAuckland
Coordinates36°29′24″S 174°43′34″E / 36.49°S 174.726°E / -36.49; 174.726
Adjacent toMahurangi Harbour
Area68,000 m2 (730,000 sq ft)
Length386 m (1266 ft)
Width230 m (750 ft)
Highest elevation40 m (130 ft)
Administration
New Zealand

Casnell Island is an uninhabited island located in the Mahurangi Harbour, Auckland Region, New Zealand. Casnell Island is managed by the Department of Conservation.