Chalk streams are identified by a distinctive set of characteristics, however, they are not all the same. Stretching from the Yorkshire Wolds in the north, down through the southeast of the country and finally over to Dorset in the south, the UK’s chalk bedrock underpins a network of river systems that differ widely in their appearance and behaviour. Northern chalk streams, like those in Lincolnshire, have a unique set of characteristics, shaped by differences in geology, hydrology, ecology, and the influence of human activity compared to their southern counterparts.

Even within Lincolnshire, no two chalk streams are identical. Each one is a product of its physical structure, water chemistry, and the ecological systems it supports, factors that vary naturally but also respond to change and pressures. Over time, these river systems have undergone significant modifications, often to support agriculture, industry or urban demands, which has significantly altered their original states. This can lead to degradation or even the loss of the qualities that define them as chalk streams. Through this project we hope to better address these complexities.