Freshwater quality

If you don’t have a net, you can collect stones from the streambed and collect the invertebrates that are clinging to the stones.

Macrophytes are large aquatic plants. How to assess macrophyte cover with just a measuring tape and a willingness to get wet.

How you can assess the types and amount of periphyton: communities of algae and cyanobacteria attached to the sediment surface or plants.

Phosphate is measured in SHMAK using the Hanna Instruments Phosphate Checker.

The nitrate test included in SHMAK is a colorimetric test. You can order additional test kits from NIWA.

Temperature and conductivity are two easy measurements you can take in your stream. Here's how to use a temperature logger.

Some SHMAK tests require you to collect a water sample. You can use SHMAK to test some parameters, alternatively the water sample can be sent to a lab for analysis.

SHMAK is available as a standard kit and SHMAK Plus. Here we explain what is included in the kit and what extras you need to purchase on your own.

The various assessments in SHMAK are done over different lengths (reaches) of stream. Mark out the longest reach first, then shorter reaches.

SHMAK Stream Site Assessment - How to record some basic information about your stream site so you can interpret your results.

Download the entire manual or just the chapters you need. A printed version is also available.

Health and safety is the most important element of any activity. Watch this video before you go out into the field.