Title

Fish Migraton Via the Shipping Lock at the Hagestein Barrage: Results of an Indicative Study

Authors

M Klinge

Publication Date

1994

Keywords

barrage, barriers, cyprinids, hydraulics, mark-recapture, migration, rainbow trout, salmon, salmonids, shipping lock, translocation, trout, upstream, upstream migration

Journal or Book Title

Water Science and Technology

Abstract

In the Dutch part of the Rhine many hydraulic works (sluices, barrages, etc.) are situated which are considered to be barriers for upstream fish migration. Because of intensive shipping these works are always combined with big shipping locks. Until recently no data were available concerning fish migration via these locks. This was studied in the river Lek at the Hagestein barrage. Due to the short length of the study period and few recaptured salmonids (salmon, sea trout, rainbow trout) no conclusive evidence about the effects of the shipping lock on salmonid migration was obtained. However, the results do suggest that the Hagestin barrage complex forms a serious barrier for upstream migration of salmonids. Several other fish species on the other hand were observed to migrate through the lock. Therefore, depending on target species and management goals, the presence of shipping locks should be taken into account when considering improving fish migration possibilities. http://www.iwaponline.com/wst/02903/wst029030357.htm

Pages

357-361

Volume

29

Issue

3

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