The objective of this project was to provide the NRA with the means to objectively assess the severity of, and define priority in resolving, low flows problems across the whole of England and Wales, which is under their jurisdiction. To meet these objectives, following consultations with the Regions, the Consultants have devised a relatively straightforward numerical system of assessment. The standard assessment method proposed, addresses the conflict between the need for minimum input of staff resources by the NRA and the need to separate low flow impacts from water quality impacts on the ecology by means of a two stage procedure comprising Preliminary Screening and Full Assessment. In practice, Regions had already carried out their own Preliminary Screening before the publication of this method.