Crawl Fish Stream

On Tuesday we went on a class visit to Crawl Fish Stream. Our class was investigating the health of the water in this location. We tested many aspects of the waterway to establish its health. We looked at the temperature of the water, flow rates, invertebrate populations present and periphytons in the waterway. We measured the water flow in the stream, stream bed composition, and water depth. All of the aspects were considered before we could pass a judgement on the stream health. The class undertook this activities because we got a School Kit from Dairy NZ. We chose Crawl Fish Stream because it was within walking distance of the school so we can repeat our visit at different times of the year to monitor the health of the waterway. Our favourite activity was racing the orange downstream and timing it between two points to work out the flow rate of the water. There was an awful lot of maths involved in our investigation.