ALMOST three times more rain fell in Opotiki last month than the August average.
According to Bay of Plenty Regional Council data, 294 millimetres of rain fell in the town – 89mm more than in August last year and 170mm more than the August average.
The rain caused flooding, slips and put a strain on infrastructure, as well as inconveniencing farmers in a big way.
“You can certainly say it was a wet August,” said regional council data services manager Glenn Ellery.
“Rainfall occurred over 17 wet days in the month – there weren’t any particularly significant events in terms of intensity of the rain, it was more the fact that there was a lot of it spread over the month.”
Mr Ellery noted it was preceded by “a drier than normal July”.
Dairy farmers faced and are facing major issues due to weather, according to dairy farm owner Doug Leeder.
“It just makes running any pastural farming really difficult,” he said.
“It’s been wet for so long now, farm managers and owners are running out of options as far as what to do.”
Mr Leeder said it was difficult to juggle keeping pastures healthy and stock healthy, while also keeping them adequately fed.
“It’s been really challenging across the board.”
Mr Leeder added that wet weather meant wastage was “really high” in pastures as stock could only graze for limited periods before the ground would be damaged, meaning a faster rotation.
“You have to control that, because as a farmer you have to wait until the spring conditions arrive for grass growth to actually keep up with demand,” he said.
Mr Leeder said access was also a problem for farmers, with many unable to navigate their farms efficiently due to the ground conditions.
“It’s just so wet, and that’s evidenced by all the slips we’ve had in the Eastern Bay,” he said.
“It’s just a symptom of the ground being completely hydraulic-ed, in terms of water capacity.”
Catriona and Mark White own a kiwifruit orchard in the Opotiki district, and Mrs White said the rainfall would be a big delay for pruners.
“It’s pruning season at the moment, and you can only prune in the dry weather,” she said.
“There’s a lot of people quite well behind in their pruning, which is a worry.”
Kiwifruit plants must be pruned before coming out of their “dormancy” over winter, something Mrs White said was not far off.
“The sap is starting to flow now, but different varieties and locations have different time periods,” she said.
Taking orchard size, location and contractors into account, Mrs White said some owners could have been pushed weeks behind by weather conditions.
Whakatohea Mussels chief executive Peter Vitasovich said while the rain had little-to-no-impact on the mussels, the accompanying conditions had drawbacks.
“We have probably been impacted by a reduction of working days because of the high winds and swells,” he said.
“The weather conditions have most definitely been extraordinary.”
Wastewater system coped
OPOTIKI’S wastewater system performed well under the pressure of last month’s substantial rainfall.
Opotiki District Council engineering and services group manager Ari Erickson said with the wastewater rehabilitation project there had been significant improvement in the town pump stations, known to be impacted by inflow and infiltration issues.
Mr Erickson said three of the four pump stations in town were now performing much better and only one pump station struggled with the excess rain.
“We have only just entered the second year of the three-year rehabilitation programme, so we are seeing good results considering we are only 30 percent complete.”
He said the stormwater network “performed as expected” under the conditions.
“We didn’t have the high intensity events, which we define as more than 60mm in an hour, but there was a high volume over several days,” he said.
“Improvements are planned for the stormwater system over the next 10 years to address high intensity rainfall which could threaten floor levels.
“Low level ponding that we experienced in recent weeks is less critical and will be addressed over the longer term as the existing stormwater system is renewed and as home owners upgrade their stormwater and connect it to the upgraded system.”
Save our stopbanks
FOLLOWING a wet winter, Bay of Plenty Regional Council is again reminding rural communities to think twice before grazing stock on stopbanks.
Asset management specialist Kirsty Brown said the council managed and maintained almost 352 kilometres of stopbanks across the region to protect people, property and livelihoods.
Wetter soil conditions, combined with heavy animals, could weaken and damage the region’s flood defence systems.
“During winter it is common sense to keep cattle off the stopbanks as much as possible to prevent the pugging and damage they can cause.
“Most farmers and lifestyle block owners know this and manage their stock accordingly, but there have been recent cases of severe damage on these vitally important community-owned assets.
She said good grass cover on a stopbank helped to “knit together” the soil structure underneath, so churned up ground was not just a surface problem, it could cause much greater issues.
“A weakened area could have a disastrous effect on surrounding properties and potentially the wider community.”
It is an offence to damage stopbanks, and landowners can be held liable for any damage.
Minor offences will receive written and verbal warnings, while more serious offences could face abatement notices, fines and prosecution.
“Our rivers and drainage staff keep an eye on our stopbanks to ensure farmers are doing the right thing.
“There is too much at stake to risk flood damage to the properties and surrounding communities,” she said.
james.sandbrook@whakatanebeacon.co.nz