This report describes the results of a low flow study of Scotland commissioned
by the Scottish Development Department and carried out by the Institute of
Hydrology. The main objective of the study was to improve techniques for
low flow estimation at the ungauged site. The study was based on mean daily
discharge data for 232 stations held on the UK surface water archive. The
authors would like to acknowledge the assistance of the River Purification
Boards of Scotland not only for collecting and processing the data used in the
study, but also for their contnbution to the production of a Base Flow Index
map of Scotland. This report is part of a series of Low Flow Study Reports
the first of which was published by the Institute of Hydrology in 1980
