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Upper Catchment Update

Upper Catchment Data between 17/06 and 20/07/2020

What a beautiful frosty morning! Dean, Kaden, Jonathan, and I scrambled over the fence and up the catchment. At each site we collected data and gathered water samples. At 3a the water was sluggish and cold with a significant amount of sediment present, be careful how you collect the samples! We are testing the water not the water and sediment. There are sheep grazing the pasture.

Map of the sites 3A, 3 and 3C in the upper catchment

Then we followed the sheep up the catchment dropped off bottles at 3B and continued up to 3C, scrambled under the fence and did the business at 3C, much less sediment.

The bottom or substrate at 3B, rocks and smaller gravel covered with a thin layer of sediment. The large rock on the foreground is about 70cm across. Many small snails, mayfly nymphs and koura present.
This is looking down the catchment from beside 3B. There is no protection of the banks other than pasture grass.

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Site 3B Story

June 16th – 20th 2020 – Site 3B John McGlashan

Frosty calm start to the day.

In the 20th May, air temp increased from 6.5oC at 9.14 through to 11.1oC by midday, no wind but a slight build up by midday to 17.2 kph from NNE

No rain fall.

High wispy cloud, blue sky and around 20% CCV.

1mm of rainfall over the previous 5 days, no rainfall but the ground is damp and boggy.

Looking eastwards from Site 3B
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Site 5 Update!

June 17th 2020 – Site 5 OGHS

Our team of Cara, Harriet and Ayla braved the increasingly cold weather at Site 5. With the north easterly breeze providing just enough waves to lap over the top of our gumboots we braved the cool water to check the depth, temperature, oxygen and salinity. Dissolved oxygen and salinity values were consistent as were the wet socks from the previous monitoring due to a significant increase in the water’s depth. A summary of nutrients is included below.

Bird life comprised mostly swans, paradise ducks, mallard/grey ducks and scaups. Swans in particular were present in large numbers. A solitary pukeko was spotted by Ayla.

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