Assessment of the February 1990 Flooding in the River Tay and Subsequent Implementation of a Flood‐Warning System

Abstract
Between 4 and 7 February 1990, exceptionally high river flows on the River Tay resulted in widespread flooding of land and property. Roads and railway lines were rendered impassable, and villages and farms were isolated for a prolonged period. In the Tay Valley, 42 km of flood banks were overtopped and 34 km2 of land were inundated.This paper describes the extent and effects of the flooding and reviews the relevance of various factors in terms of their likely contribution to the magnitude of flooding. Flood‐mitigation measures are discussed with particular attention being given to the implementation of a flood‐warning system for the Tay Valley.

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