Skip to main content

PDF


Title: Derivation of discharges used for fish movement at Conwy Falls (project no. N0289)
Author: N.J. Milner
Author: M. Scott
Document Type: Monograph
Abstract:
This report describes derivation of the flow range used by salmon for movement in the upper Conwy, N. Wales. This information was required to recommend levels for the tunnel entrance of the proposed Conwy Falls fishpass. On the basis of angling catch-flow relationships, it was estimated that 90Z of salmon movement would occur within the discharge range 0.05 to 6 times the ADF station (17.37 cumecs) at Cvm Llanerch gauging station. This result is briefly discussed in the context of published information on salmon flow requirements and sources of error in the anlaysis. in addition to flow requirements, recommendations are made in relation to additional hdyrological analysis and m o nitoring of runs through the pass.
Publisher: National Rivers Authority
Publication Date: 1990
Publication Place: Cardiff
Subject Keywords: Fish migrationSalmon fisheriesFish passesFlow rate
Geographic Keywords: WalesConwyConwy and Clwyd catchment
Taxonomic Keywords: Salmo salar
Extent: 7; + tables and figures
Permalink: http://www.environmentdata.org/archive/ealit:3480
Total file downloads: 61

Download PDF    Display PDF in separate tab