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Hawke's Bay Dry

The golden summer hills of Hawke’s Bay are clear evidence that much of the region had half the normal rainfall in November and December.

Recent strong westerly winds in the last few weeks will have hastened the drying, resulting in the region wide fire ban.   

Hawke's Bay Regional Council's monthly state of the environment report for December was released today showing the low rainfall data.

“We’ve only had a wet day or two in December and early January which haven’t made any difference, and no significant rain is expected in the near future,” says HBRC climate scientist Kathleen Kozyniak.  

Monitors around the region are showing mostly below average soil moisture. 

The Heretaunga Plains had only a third of normal rain in December, and Ruataniwha only slightly more at 39%.  Southern Hawke’s Bay’s dry coastal strip has fared only slightly better, getting only 43% of their normal December rain.

While the Waikaremoana district was the dampest spot in the region, it still only had three quarters of normal December rainfall.  Similarly, the Kaweka and Ruahine ranges had more rain than the rest of the region, but still had only 62% and 53% of their normal monthly rainfall.

With less rain in the ranges, river flows in December were below normal, except for the Mohaka that had a higher than usual flow for the month.  

Low flow bans for irrigation are now on higher take limits on most of the rivers, and consent holders will have been advised by HBRC when the low flow bans are enforced.  Low flow ban information can also be tracked online here.  Irrigators should recheck their consent conditions to be clear when they should be cutting back on irrigation.

Groundwater levels in the Heretaunga and Ruataniwha aquifers are well below normal and there are a high number of record monthly lows.  Smaller aquifers in northern Hawke’s Bay are mostly normal but southern Hawke’s Bay’s smaller aquifers are also seeing record monthly lows.

 

 

12 January 2017

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