Rule 29 Staff gauges
The construction, laying, or erection of any staff gauge, in, on, under, or over any river or lake bed which disturbs an area covering less than 10 square metres of river or lake bed is a permitted activity, provided it complies with the conditions specified below.
(1) No contaminants (including but not limited to oil, petrol, diesel, paint, or solvent) shall be released to water from equipment being used for the operation, and no refuelling of equipment shall take place on any area of river or lake bed.
(2) Any excess material from the construction operation, shall be removed from the river or lake bed and disposed of in an appropriate manner.
(3) In any part of the river or lake bed covered by water in any water body identified in Policy 4.2.14 (Appendix 4 - Water bodies with important trout habitat (click here for a pdf Important Trout Habitat (146k))), the activity shall not take place between 31 May and 31 August.
(4) All reasonable steps shall be taken to minimise the release of sediment to water during construction.