Riparian margins

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Metres of fencing for riparian protection of lakes and streams  

 
 

Purpose of indicator

Health of riparian margins is an important contributor to lake and stream water quality. Vegetation bordering water bodies helps to filter soil, nutrients and other contaminants from run-off before entering a lake or stream. Excluding stock and planting riparian areas has been a focus of water quality projects of Rotorua lakes catchments to support better water quality.


Current information and trend

During the 2010/11 year $122,957 was spent on works associated with 18 registered environmental programmes within the Bay of Plenty Regional Council area of the Rotorua district. Works undertaken have helped exclude stock from waterways (via fencing) and filtering of nutrients (via planting), improve stream and lake water quality, create new habitat and enhance indigenous biodiversity. Figure 1 shows fencing lengths installed since 2007. Fencing is only one aspect of environmental programmes, however it is important to water quality. Environmental programme activities have contributed towards meeting the following Lakes Action Plan targets:

  • 99% of all Rotorua lakes margins have no stock access. Lakes Okareka, Okataina, Tarawera, Rotokakahi, Tikitapu, Rotomahana, Rerewhakaaitu and Okaro have no lake margin stock access.

  • Approximately 95% of Rotorua lakes catchment streams have no stock access. All streams in lakes Rotoiti, Rotoehu, Rotokakahi, Tikitapu, Rotoma and Okaro catchments have now been protected from stock access, or have no stock access possible.

Where possible, fencing has excluded stock from access to lakes. An example where fencing is not possible or necessary would be where there is a cliff face at the edge of a lake. In this case stock are unable to access the lake therefore fencing is not necessary.

The Bay of Plenty regional and Waikato regional policy statements and Plans, and The Rotorua Operative Plan and Draft Rotorua District Plan encourage establishment, retention and enhancement of riparian margins of both urban and rural environments.

Please note that fencing of riparian margins reported here is only that within the Bay of Plenty Regional Council area of the Rotorua District. Fencing of riparian areas in the Waikato area of the Rotorua district will be included in future reporting.

 
 
Chart of Commulative length of fence cinstructed
Figure 1
Source: Bay of Plenty Regional Council, 2011
 


In Summary

  • 99% of all Rotorua lakes margins have no stock access.
  • Approximately 95% of Rotorua lakes catchment streams have no stock access.
  • Almost 35,000 metres of fencing was constructed to exclude stock from waterways in the period from 2007 to 2011.

Page reviewed: 03 Jul 2019 10:12am