4.3.8 Implementation Methods - Introduction or Planting of Vegetation and Tree Layering on the Beds and Banks of Rivers and Lakes
188.8.131.52 Permitted Activity Rule – Introduction and Planting of Plants
- Except as controlled by Rule 184.108.40.206 and prohibited in Rule 220.127.116.11, the introduction, planting or layering* of any plant or any part of any plant, with the exclusion of plants pests as identified in the Waikato Regional Pest Management Strategy, in, on or under the beds or banks of any lake or river, for the purposes of soil conservation or streamside enhancement, and
- The associated deposition of construction material, and
- The associated discharge of sediment, and
- The associated bed disturbance
is a permitted activity subject to the following conditions:
- The activity shall not result in any increase in the adverse effects of flooding, or obstruct the river or lake bed.
- All materials from the planting, and associated equipment shall be removed from the river or lake bed and floodplain on the completion of that activity.
- The activity shall not disturb any archaeological site or waahi tapu as identified at the date of notification of this Plan, in any district plan, in the NZ Archaeological Association’s Site Recording Scheme, or by the Historic Places Trust except where Historic Places Trust approval has been obtained.
- In the event of any waahi tapu that is not subject to condition ‘x’ (c, or e respectively) being identified by the Waikato Regional Council to the person undertaking the introduction and planting of plants, the activity shall cease insofar as it may affect the waahi tapu. The activity shall not be recommenced without the approval of the Waikato Regional Council.
- No contaminants (including, but not limited to, oil, hydraulic fluids, petrol, diesel, other fuels, paint or solvents, but excluding sediment) shall be discharged to water from the activity.
- The Waikato Regional Council shall be notified in writing at least 10 working days prior to commencing the activity if it occurs within a flood or drainage control scheme area that is managed by the Waikato Regional Council or a territorial authority.
- The activity shall comply with the suspended solids discharge standards as set out in Section 4.2.21.
- Any erosion occurring as a result of the activity shall be remedied as soon as practicable.
- Plants shall not replace indigenous flora or have the potential to smother indigenous flora.
- Except as prohibited by Rule 18.104.22.168, the introduction or planting of any plant or any part of any plant or tree layering in, on or under the beds or banks of any lake or river that does not comply with the conditions of Rule 22.214.171.124 is a discretionary activity pursuant to Rule 126.96.36.199.
188.8.131.52 Prohibited Activity Rule – Introduction and Planting of Plant Pests
The introduction or planting of any, or part of any, of the following plant species in, on or under the bed of any river or lake in the Waikato Region is a prohibited activity:
- Alligator weed (Alternanthera philoxeroides)
- Bladderwort (Utricularia gibba)
- Bogbean (Menyanthes trifoliata)
- Clasped pondweed (Sagittaria graminea ssp. platyphylla)
- Eel grass (Vallisneria gigantea)
- Egeria oxygen weed (Egeria densa)
- Floating sweetgrass (Glyceria maxima)
- Freshwater eel grass (Vallisineria spp.)
- Fringed water lily (Nymphoides peltata)
- Hornwort (Ceratophyllum demersum)
- Hydrilla (Hydrilla verticallata)
- Lagarosiphon (Lagarosiphon major)
- Manchurian wild rice (Zizania latifola)
- Marshwort (Nymphoides geminata)
- Nardoo (Marsilea mutica)
- Parrot’s feather (Myriophyllum aquaticum)
- Phragmites (Phragmites australis)
- Sagittara (Sagittara graminea spp. Platyphylla)
- Senegal tea (Gymnocoronis spilanthoides)
- Salvina (Salvinia molesta)
- Spartina (Spartina ssp.)
- Water poppy (Hydrocleys nymphoides)
- Water primrose (Ludwigia peploides ssp. Montevidensis)
- Yellow flag (Iris pseudacorus)
- Yellow water lily (Nuphar lutea)
- Water hyacinth (Eichhornia crassipes)
- Pussy willow (Salix x reichardtii)
- Grey willow (Salix cinerea)
Explanation and Principal Reasons for Adopting Methods 184.108.40.206 and 220.127.116.11
Section 13(1)(c) of the RMA restricts the introduction or planting of any plant, or part of any plant, in, on or under the bed of a river or lake. Rule 18.104.22.168 therefore enables the introduction or planting of any plant, or any part of any plant, and tree layering in, on or under the beds or banks of any lake or river in the situations described, and where the adverse effects described do not result. Activities that do not comply with this Rule are discretionary activities pursuant to Rule 22.214.171.124.
The purpose of Rule 126.96.36.199 is to prohibit the introduction or planting of any plant, or part of any plant, listed as an aquatic plant pest in the Waikato Regional Pest Management Strategy. The introduction of plant pests is an offence under s52 and s53 of the Biosecurity Act 1993. The plant pests listed in Rule 188.8.131.52 are either banned from sale or are national surveillance plant pests. The two willow species named are very invasive and spread quickly blocking river channels and causing flooding problems. Planting of any of these listed species may cause significant adverse effects.