Lake Rotomahana

Lake Rotomahana

Lake Rotomahana

Rotomahana means "warm lake". Prior to the Tarawera eruption, this lake comprised two smaller lakes - Lake Rotomahana (warm) and Lake Makariri (cold).

Lake Rotomahana was the site of the geothermal "Pink and White Terraces", once considered the eighth wonder of the natural world. The terraces were destroyed in the 1886 Tarawera eruption, which also substantially altered the lake. Today, it is the deepest of the Rotorua lakes and is said to contain the purest strain of rainbow trout in the world.

At a glance  
Lake size: 900 ha
Catchment area: 8370 ha
Elevation: 339 m
Average depth: 60 m
Deepest point: 125 m
Modified and enlarged in 1886
Tarawera eruption
Drains probably to Lake Tarawera by subsurface flow
 

 

 

 

 

 

 

 

 

Water Quality Status

The long-term water quality trend for Lake Rotomahana is stable.  No actions were undertaken as Lake Rotomahana has not triggered the need for an Action Plan.  We will continue to monitor the lake and if this changes an Action Plan will be developed in consultation with the community.

Catchment Map

Click here to view image of map.

Target and Results

Lake Rotomahana has not yet reached the trigger point to develop and action plan.  We will continue to monitor the lake and if this changes an Action Plan will be developed in consultation with the community.

Water Quality target 

3.9 

2017 result

4.0

2016 result

4.0

 

 

 

 

 

 

 

 

 

 

Actions and achievements

There are no planned actions for Lake Rotomahana as it has not reached the trigger point for an Action Plan to be developed.

We will continue to monitor the lake and if this changes an Action Plan will be developed in consultation with the community