We have recently been commissioned by South West Water (SWW) to undertake a 2-year water quality monitoring programme in a local stream.
The Bourne Stream is a small stream which receives augmentation flow from the SWW treatment works at Alderney in Bournemouth. Proposed changes to the augmentation flow have resulted in the need for baseline water quality data to inform the future flow augmentation scheme within the stream.
The Bourne Stream flows through the centre of Bournemouth and has a wide variety of habitat types throughout its course.
In the upper reaches, the stream exhibits relatively natural (or naturalised) habitat characteristics, whereas further downstream it becomes canalised and artificially constrained through the town centre.
The stream has high amenity value, flowing through heavily populated areas and through the lower Bournemouth gardens to the sea.
The water quality monitoring programme includes sampling fortnightly over a 2-year period and analysing the samples for a large suite of determinands, including nutrients, general chemicals and metals.