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LakeSPI Categories

Welcome to NIWA Lake Submerged Plant Indicators

LakeSPI (Lake Submerged Plant Indicators) is a lake information and management tool used to assess and report on the ecological condition of New Zealand Lakes.
  • Learn more about the ecological condition of your lake.
  • Discover which submerged plants are growing in your lake.
  • Follow changes occuring in your lake over time.
  • For lake managers, LakeSPI has many other uses.

Use the map to zoom in on a lake. Search for a lake by name or search for a lake meeting specific criteria. Click on a map marker or the lake name in the results list to go to the lake report card.
More about LakeSPI.


Creative Commons License LakeSPI by NIWA is licensed under a Creative Commons Attribution-NonCommercial 3.0 New Zealand License.


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  • Map LakeSPI Lake Condition Map
  • Table LakeSPI Lake Indices Table
  • Chart LakeSPI Lake Condition Pie Chart
  • National Status LakeSPI Lake National Status Rank Chart

LakeSPI Condition

  • Excellent
  • High
  • Moderate
  • Poor
  • Non-vegetated
Lake Status Date LakeSPI % Native Condition % Invasive Impact %