Citizen Crane
This groundbreaking citizen science project has been collecting monthly information on the health of the River Crane and Yeading Brook since 2014. Every month volunteers record the types and numbers of key aquatic invertebrates at specific locations, under a national programme called the Riverfly Monitoring Initiative (RMI). The mix of invertebrates found and the numbers present provides a useful indication of water quality. The project has also been routinely sampling the watercourses for phosphate and ammonium.
Some homes in the catchment have misconnections, meaning that water from washing machines, showers or even toilets can flow into the river system. Also, there are places in the sewerage system where foul water sometimes overflows into pipes that should only be conveying rainwater to the local watercourse. The monitoring work of Citizen Crane can help to pinpoint places where such problems are occurring so that remedial action can then be taken by the appropriate authorities.
In 2016 and 2021, Citizen Crane undertook ‘Outfall Safari’ surveys along the main spine of the Crane river system, spotting and recording drainage outlets – routinely known as ‘outfalls’ – either from the riverbank or, where this was not possible, from within the river channel. The key aim was to identify any outfalls that showed signs of pollution. A further, smaller, survey occured in 2022 (this time focusing on the Yeading Brook East). The information gathered by these surveys has subsequently been used by Thames Water to target investigation work. Another full Outfall Safari took place in the Crane catchment in 2024 and you can view the report here.
Watch this riverfly monitoring video:
Watch this Outfall Safari in-river survey video:
If you would like to participate as a volunteer in Citizen Crane’s routine riverfly monitoring activity, please click the button below:
If you would like to learn more about water quality in the Crane Catchment, please click the button below:
