Title: Report on the 1995 stock assessment of the Douglas catchment
Author: Darryl Clifton-Dey
Author: Mark Walsingham
Document Type: Monograph
Annotation: EA additional title info: National Rivers Authority North West Region
Abstract:
The River Douglas has a long industrial heritage beginning in the early 18th century with its use by boats carrying goods between Wigan and Tarleton. The River and its tributaries have also historically been, and to a certain extent are still, subject to polluting inputs from the urban, agricultural and industrialised areas located within its catchment. Water quality in the system is generally of Class 2 with some areas of Class IB or Class 3. An electric fishing survey of the River Douglas and it's main tributaries was undertaken in the summer months of 1995. Eighty-two sites were sampled by wading or electric fishing punt. Problems were encountered in the lower reaches of the rivers because of excessive widths and depths. Results were analysed according to the National Fisheries Classification Scheme.
Publisher: Environment Agency
Publication Date: 1996
Publication Place: Warrington
Subject Keywords: Rivers; Water quality; Population structure; Salmonidae; Coarse fishes; Stock assessment; Fishery surveys; Fish migration
Geographic Keywords: Douglas catchment; Lancashire; Douglas (Lancashire); Yarrow (Lancashire); Tawd (Lancashire)
Extent: n.p.[228]
Permalink: http://www.environmentdata.org/archive/ealit:1083
Total file downloads: 53
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