Leeston Stormwater Bypass
2014 Community Survey
Following the June 2013 flooding in Leeston, a public meeting was held in July 2013 during which the community asked the Council to look at options to divert flood waters from the surrounding land around the township and manage localised flooding. Drop in sessions were also held so that individual property owners could talk with Council staff about any issues affecting their property.
Following the public meeting, Council staff worked with the Leeston Community Committee to investigate a number of ideas and suggestions put forward by the Community. These options were discussed at a community meeting held at 7pm on Monday 31st March 2014. The information presented at the community meeting plus further details of the options can be found below.
All rate payers in the Leeston township were given the opportunity to provide feedback to Council via a questionnaire.
Leeston residents who took part in a survey last year indicated they want to see work progressed to upgrade the town’s stormwater system. Of the 846 surveys sent out, 288 survey forms were returned, providing a 34% response rate. 77.4% of those taking part in the survey said they supported work being undertaken on the stormwater system. 19.1% of respondents said they opposed this and 3.5% had no preference.
People were also asked to comment on two stormwater upgrade options.
Option A involved a stormwater bypass which would divert stormwater away from the town centre. A swale connecting the Leeston Creek to the Cunningham Street Culvert through the block of land known locally as the Martin block. Work includes widening and deepening of drains from the stormwater reserve on Country Lane to culverts at the show grounds. Culverts at the show grounds would be upgraded along with key sections of the Tramway Reserve Drain would be widened and deepened to carry additional water. The estimated cost of option A is $1.55 million. Per property this would equate to an extra $110 added to rates for the next 20 years, or a lump sum payment of $1162.
The other option included in the survey, option F, would involve all the works under option A being completed and the drain along Harmans Road being extended and widened to divert water to the west side of the township. This option can only proceed subject to stakeholder liaison and the resource consent process. The cost of option F is estimated at $2.15 million or $185 per household repaid over 20 years. This could also be paid as a lump sum of $1983.
45% of people taking part in the survey wanted the Council to progress option F, and 30% of people wanted option A progressed. Other respondents had no preference.
$500,000 is budgeted to progress investigation work during the 2014/15 financial year including finalising designs, land acquisition, and initial diversion works – Stage 1.
Stage 1 works – Completed
Grant Hood Contracting working on behalf of Council, have completed the first stage of the Leeston Bypass works. These works included upgrading of the following drains and culverts:
- CDHB drain between Cunningham Street and Manse Road
- High Street drain between Manse Road and the showground culverts (Showground Culvert upgrade planned for future stages
Minor landscaping works continue until planting has fully established.
Stage 2 works - Commencing Mid May 2016
Works to enable stage 2 of the Leeston Stormwater Bypass to be constructed will be starting along Manse Road the week commencing 16 May 2016. Undergrounding of the overhead power lines will be occurring along Manse Road between Friars Lane and High Street and along Selwyn Street from Manse Road to just past Cunningham Street. The programme for undergrounding works are expected to continue to the end of August 2016, but is weather dependant. Traffic management will be in place during this time and access to properties maintained at all times.
Following the undergrounding works, upgrades to the southern end of Manse Road drain and roading upgrades are planned for spring/summer 2016.
For further information please contact Jo Golden, Water Services Engineer or Murray England Asset Manager Water Services.