the stage that only dozens of trout could be counted when returning to spawn. The fish in the river have been described as low in number and the majority of the fish are quite small. Pollution The Canterbury Regional Council (ECan) has permitted intensive dairy farming around Selwyn and it has been suggested that this has led to a deterioration in the water quality of the Selwyn river. In May 2021, it was reported that Nitrate levels in the Selwyn River has increased by 50%. It is no longer recommended that people go swimming in the Selwyn River. Coes Ford was once a well known swimming spot in Canterbury. The water at Coes Ford was reported to be in the worst 25% in New Zealand for total nitrate levels in 2020. The pollution at Coes Ford is thought to come from Silverstream creek, which used surrounded by many of the dairy farms in the area. Chamberlain's Ford which crosses the Selwyn RIver had an algal bloom health warning issued in December 2020. There were benthic cyanobacteria found in the river. Algal Blooms of benthic cyanobacteria have also been reported at in the Selwyn river at Whitecliffs Domain and Whitecliffs Road in March 2021. Greenpeace placed billboards in the Selwyn River to protest the degree of pollution in it in February 2020. Naming The Selwyn River and its gorge were named in 1849 by the chief surveyor of the Canterbury Association, Joseph Thomas, for Bishop Selwyn. The name was later adopted for the township, the district, and an electorate. The New Zealand Ministry for Culture and Heritage gives a translation of "gravelly stream" for . References Rivers of Canterbury, New Zealand Rivers of New Zealand Braided rivers in New Zealand