Argumentation of the River Derwent using Thirlmere

This is the Argumentation of the River Derwent using Thirlmere produced by the Cumberland River Authority in 1972. This report focuses on the augmentation of the River Derwent by a limited discharge from the Thirlmere Reservoir in short terms. A Working Party of officers from both the Authority and the Corporation was established and experimental releases of water from Thirlmere were made in dry periods in order to assess more clearly their effect upon river flows, and on the level of Bassenthwaite Lake. This report contains the Working Party's evaluations, conclusions and recommendations.