Disposal Sites and Volumes

Under the resource consent, Port Otago disposes of dredged material across three sites. The maximum disposal volume over the three sites remains the same as previous inshore consents - a total of 450,000m3 each year. This is material derived from both maintenance and incremental dredging.  

Map of disposal sites

Disposal sites

Heyward Point

Area: Approximately 225 hectares

Receives: Sand, rock and silt material from both maintenance and incremental dredging

Volume: See notes below

Grid coordinates (map reference NZTM 2000):

• E1420309 N4931834
• E1421276 N4930679
• E1422429 N4931657
• E1421462 N4932797

Aramoana

Area: Approximately 36 hectares

Receives: Sand material from both maintenance and incremental dredging

Volume: See notes below

Grid coordinates (map reference NZTM 2000):

• E1421464 N4929554
• E1422088 N4929053
• E1422376 N4929414
• E1421739 N4929914

Heyward Point and Aramoana volumes:

• The total volume to be deposited across the Heyward Point and Aramoana disposal grounds cannot exceed an average of 300,000m3/year, calculated over any five-year period. 
• However, the total volume deposited at Aramoana cannot exceed an average of 100,000m3/year, calculated over any five-year period. 
• The intention is that normal deposition will be up to 100,000m3 at Aramoana and up to 200,000m3 at Heyward Point each year.

Shelly Beach

Area: Approximately 14.5 hectares

Receives: Sand derived from eastward of Tayler Point

Volume:  Total maximum of 50,000m3 per year 

Grid coordinates (map reference NZTM 2000):

• E1422239 N4928298
• E1421925 N4927955
• E1422203 N4927759
• E1422465 N4928119