River maintenance evaluation

In January 1989, the National Rivers Authority (NRA) Severn Trent Region commissioned Silsoe College to undertake a three year study to monitor and evaluate the impact of maintenance on six of its main river sites. The study developed methods for the technical and economic appraisal or fiver maintenance. Subsequent to this, the study was extended to incorporate other NRA Regions, and further develop methods to help design, justify and prioritise maintenance activities. The study reported below involved the monitoring of 12 sites in five NRA Regions during the period March 1992 - October 1995, and further development of guidelines for the management of the maintenance function.