Geography

Lake Matiri was formed over 350 years ago by a massive earthquake generated landslide. From the outlet of the lake the terrain falls steeply (approximately 95m over 2km) to the site of the proposed power house lower down the valley on NZ Electricity owned land.

[Click image for a larger view]

[Click image for a larger view]

The power station will be located at the southern end of the red line adjacent to the confluence of the East branch and main streams of the Matiri river. A 1.6m diameter penstock extends as indicated by the red line from the power station to just beyond the prominent sweeping bend where it traverses through bush to 100 metres below the main lake outlet. Detailed layout of proposed site.
This photograph shows the Matiri river to the left with cattle on the south bank of the west branch.

Public vehicle access will be extended across NZ Energy owned land to just south of the west branch of the Matiri river. A ford is proposed to provide vehicle access across the west branch for power station operation.
The proposed power station site shown here is upstream of the west branch and located on NZ Energy owned land. This general view is looking down the valley.
The penstock will be laid at the rivers edge upstream of the power station Around the prominent sweeping bend
To the point where it enters the bush Some of the bush section is along the old track that was bulldozed for stock access in earlier years.
The last bush section is through rough untracked terrain. Emerging at the rivers edge below the main lake outlet seen here in the distance.
View above the main outlet just above where the no 1 weir will be constructed feeding the penstock. General view of river below lake Matiri showing the significant rock slide that formed the lake
 
General view from above the sweeping bend looking downstream toward power station location