River Ise

The Ise contains many varieties of coarse and game fish, including roach, perch, barbel, rudd, common dace and chub. It is also the only watercourse within Northamptonshire to contain grayling (Thymallus thymallus). ==Tributaries==

The River Ise has various named and unnamed tributaries that join it along its course. Slade Brook The Slade Brook sub-catchment is the largest tributary of the Ise and drains much of the urban area of Kettering, as well as smaller settlements west of the town including Rothwell and Broughton. Two reservoirs were constructed in this system at Cransley and Thorpe Malsor in the 1880s to provide water for local furnaces. Today these artificial lakes are used for recreational fishing and sailing. The Slade Brook joins the Ise just to the south of Wicksteed Park. Swanspool Brook The Swanspool Brook rises in woodland to the west of Hardwick and flows through Mears Ashby and Wilby before entering the urban area of Wellingborough, where its shallow valley forms an extensive area of open green space, as well as Swanspool Lake. It meets the Ise close to the confluence with the River Nene. ==Status==

In 2019, the overall classification of the River Ise under the Water Framework Directive was 'Moderate' for the upper Ise, and 'Poor' for the lower Ise. In both the upper and lower Ise, the predominant factor preventing the rivers from achieving "Good" status under the framework is high levels of phosphate, derived from poor nutrient and livestock management in the surrounding agricultural land and continuous discharge of treated sewage effluent. ==References==