Longer summers, shorter winters, more extreme weather

HDC are looking at climate change impacts:

Scientific studies show the district could be headed for longer summers and shorter winters, but with a forecasted increase in temperature comes the increased possibility of more extreme weather. …

The potential effects of any possible rises in sea level on beach communities and extreme weather events on the district meant HDC would soon be forced to adopt policy and planning guidelines to manage future potential risk. …

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Dangerous and unwanted: Sea Spurge plants

We’ve received information from Horowhenua District Council and Department of Conservation about a weed we do not want in our dunes: Euphorbia paralias or Sea Spurge:

…a potentially serious weed threat for our coastal dunes.

DOC have confirmed that a single plant of this type has been identified at Himitangi Beach, and that care must be taken as the sap is harmful.

If sighted it needs to be reported to the MPI Biosecurity NZ Exotic Pest and Disease hotline 0800 80 99 66 as soon as possible.

The plant in Himitangi had not seeded so great that it appears to be an isolated plant not established and spreading.

Any help in keeping this from becoming established in our unique dunelands would be greatly appreciated and the more eyes we have out there looking, the better.

Please look out for this plant as you go about Waikawa Beach. If you see any don’t touch but do note its location, take a photo if possible and contact the Hotline above.

Sea Spurge plant.
Sea Spurge plant in close-up at Himitangi Beach.
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Drone photos, January 2020

Blair very kindly takes regular drone photos of the river mouth. This time he has also included the village and Strathnaver. The photos below have been reduced in size and quality. The full-size versions are worth viewing though, so at the end of the post is a set of links to the larger, better quality photos, each of which is around 5 MB in size. Beware data use on phone plans.

Update: See a 3D model of the area. Also added: an overhead view.

Drone Photo 01: Manga Pirau Street and river mouth.
Drone Photo 0002: Manga Pirau Street and river mouth.
Drone Photo 0401. Coastal Waikawa Beach.
Drone Photo 0401. Coastal Waikawa Beach.
Drone Photo 0400. Village and Strathnaver.
Drone Photo 0400. Village and Strathnaver.
Drone Photo 0399. The village.
Drone Photo 0399. The village.
Drone Photo 0398. River from footbridge to groyne.
Drone Photo 0398. River from footbridge to groyne.
Drone Photo 0381. River by groyne.
Drone Photo 0381. River by groyne.
Overhead view from drone.
Overhead view from drone.

Full size photos

  1. Drone Photo 01 large: Manga Pirau Street and river mouth.
  2. Drone Photo 0401 large. Coastal Waikawa Beach.
  3. Drone Photo 0400 large. Village and Strathnaver.
  4. Drone Photo 0399 large. The village.
  5. Drone Photo 0398 large. River from footbridge to groyne.
  6. Drone Photo 0381 large. River by groyne.

Rain, wind, trees

On Sunday, 08 December 2019 we had a good amount of rain — about 28mm. We also had some gusty winds in the evening. By Monday it was obvious that some trees had suffered. Outside 41 Manga Pirau Street quite a few branches came down, while 9 Duncan Street suffered a broken fence when a large tree fell on top of it.

Later in the day workers dealt with the fallen tree.

Fallen tree branches outside 41 Manga Pirau Street.
Fallen tree branches outside 41 Manga Pirau Street. Photo by Lesley-Anne Walker.
Fallen tree outside 9 Duncan Street.
Fallen tree outside 9 Duncan Street. Photo by Lesley-Anne Walker.

River mouth photo 07 October 2019

Drone photo of the river mouth, taken on 07 October 2019.

Drone photo of the river mouth, taken on 07 October 2019.
Drone photo of the river mouth, taken on 07 October 2019.

Note: since then the river cut through that narrow stretch of sand and started flowing more directly out to sea.

Compare this with the River mouth photo 20 July 2019:

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