The Effect of Boat Activity on Turbidity in a Shallow Broadland River

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Abstract
Measurements of water turbidity and boat movements were made on a shallow Broadland River, the River Ant, above and below Barton Broad [UK]. A simple experimental model of the form y = a + bekt was proposed and tested. It describes the mechanism by which boats can influence turbidity. Of 3 constants derived from the model, 2 were closely related to measured physical variables. The model was used to predict water turbidities from typical boat movement patterns. This demonstrated that long-term build-up of boat-induced turbidity through the holiday season was unlikely and that the major part of the turbidity in and below Barton Broad on the River Ant was due to algae, not to boating activity.

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