Water Quality Monitoring Surveys
Before commencing any water quality monitoring survey is it important to understand what is the aim of the project? Is it understanding differences between sites (spatial trends) , trends over time (temporal trends) or both. Too often water quality monitoring surveys kick off with little refinement of the overall goal of the project. This results in a waste of time and money. The sampling survey design of the water quality monitoring survey must have the overall project goal as its core delivera...
November 11, 2026Wetland Delineations
When undertaking a wetland delineation, an important consideration is the underlying geology. If the underlying geology has a dark colouration, this is a sign of oxidised soils representative of anoxic conditions common in wetlands. Conversely if the underlying soils are more orange this is a sign that the soils are aerobic and not representative of wetlands. The vegetation overlying the soils of course will enable you to better determine the wetland status but be sure you have consulted the pas...
October 27, 2026When is a stream a stream?
When undertaking Ecological Impact Assessments we often need to undertake a watercourse assessment to provide resource consent advice to Council as to whether the property contains a stream or an overland flow path. In this photo, I am showing an overland flow path, it is not a stream because it does not show substrate sorting processes, it does not contain any aquatic life and it lacks any aquatic vegetation. Stream ecological valuations are not undertaken on overland flow paths because they la...
October 26, 2026The EIA Stream Dream Team
Meet our team of aquatic bug pickers from left Sarah, Kushaal, Brett (the boss), Gary and Kanchan. Collectively we have a capacity to process large numbers of aquatic invertebrate samples which then provides information for any resource consent application near water. For smaller consignments (2-6 samples) we can usually turn around the work within 2 days. For larger consignments we guarantee we will provide a better turn around than any laboratory in New Zealand....
March 31, 2025Spat ropes not always the best remedy
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October 18, 2024The same stream in 2024
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July 4, 2024Urban Stream 2023
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July 4, 2024Not Good Enough
I recently visited the Kiwitea Stream in the Manawatu. I noticed some extreme river works had been done to the entire stream channel that has resulted in a mass sediment load to the reach. This can result in degraded spawning habitat, reduced interstitial dissolved oxygen and reduced habitat quality for the entire stream fauna. I lodged this with Horizons Regional Council Pollution hotline on December 30th. Today is January 18th and I'm still waiting for a response. I wouldn't call it a hotline!...
July 4, 2024Our new EIA resident!!
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January 12, 2024Community Planting Morning, Beachaven
A big thanks to Pest Free Kaipatiki for hosting this vegetation planting morning in a stream gully at Beachaven. We even get people come to these events from GreyLynn! And thanks to our Kaipatiki Local Board for supporting these initiatives. Getting like minded people together is a great thing....
September 7, 2023How to prepare your macroinvertebrate sample for dispatch
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June 21, 2023Urban Stormwater Monitoring in the Wairarapa - First Flush Sampling
We have begun a stormwater sampling regime for Carterton District Council's urban stream environments. The photo shows a cool low tech way to capture the first flush event. As the stream rises , more stormwater is entering the system and the bottle attached to the waratah simply samples the surface water which is then despatched to a lab for metals analyses....
June 11, 2023Kahika Creek - A Sad Case Story
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May 8, 2023Another pest fish out of the water.
I extracted this fish using a technique called fly fishing!!...
April 26, 2023Wetland Gully in Hamilton
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April 6, 2023Awataha Greenway Opening , April 1st 2023
The Awataha Greenway opening occurred on Saturday April 1st. Despite average weather conditions there was a good turn out of people (likely to be in the thousands). It provided the opportunity for the Northcote community to celebrate the daylighting of over 1 km of stream with riparian planting and exploring the network of public open spaces that follow the Awataha Stream channel. A greenway is a green ‘corridor’ designed to make it easy and pleasant for people to move around part of a ...
April 4, 2023Kahika Creek - Sewage Fungus and Detergent Foam - not a good look
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March 27, 2023Our latest newsletter
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February 3, 2023Contrasting Colours of a Wetland in Coromandel
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January 18, 2023Giant Kokopu in Tuakau!
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December 7, 2021Here's good size longfin eel I captured recently!
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September 30, 2021Grazing heavy stock on steep terrain - it's nuts. This photo was taken from Battle Hill
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August 6, 2021Community Science In Action
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June 29, 2021Chelsea Reservoirs
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June 21, 2021Awataha Stream Restoration
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May 27, 2021 Posts 1-25 of 33 | Page next