Dillon Dam

Client: Dillion Family Trust
Location: Waihopai, Blenheim, Marlborough
Duration: 18 months, 2018-2020
Engineer: Engineering Geology Ltd.

The Throne station in Marlborough overlooks Waihopai spy base and vineyards. The sheep and beef farm has been in the Dillon family for well over three generations. The Throne has about 7000 Corriedales and runs Charolais bulls and Angus cattle.

David Dillon invested in a private water scheme to develop alternative on-farm income streams including grapevines and woodlots, along with supporting the farm during dry seasons.

The dam is one of the largest privately-owned dams in the South Island. As a high PIC dam, safety was our top priority. The dam required extensive earthmoving to get to bedrock and had some issues with underground water while constructing the cut off keyway which was dealt with accordingly.

Skevingtons had eight staff onsite, 40-tonne dump trucks, 40-tonne excavators and used the Topcon GPS system on a dozer to get accurate results.

Dillon Dam was made with the help of Engineering Geology Limited. Thanks to the Dillon family for allowing us to help them on this project.


We were introduced to use Blair by Trevor Matuschka of Engineering Geology Ltd  Auckland and duly met him on site early last year and after discussing their competitive rate we engaged them to construct our Basin dam.

We have been impressed by the calibre of his judgement and that of his employees' in their ability to carry out good sound work. Blair is very personable and trustworthy and explains what it is when asked. The same could be said of Deano his understudy. This sets them 'apart from the pack' and we would recommend them to others.

Yours sincerely,


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