SYSTEM FOR FACILITATE FISH MIGRATION UPSTREAM/DOWNSTREAM OF THE BULZ DAM

• Main Authors: Voicu Razvan, Luca Ecaterina, Voicu Liliana
• Format: Article
• Language: English
• Published: Romanian Limnogeographical Association 2013-05-01
• Series: Lakes Reservoirs and Ponds
• Subjects: longitudinal connectivity; dam; fish migration
• Online Access: http://www.limnology.ro/Lakes/2013/201307103.pdf

The study area is part of the Iad River basin, one of the largest basins, a right tributary of the Crisul Repede River. The Iad River, a tributary of the Crisul Repede River is located in the north-western Romania, and is intensively arranged in the matter of engineering. Throughout its length the Iad River is provided with three dams and reservoirs (Bulz, Munteni and Leşu), which are part of the hydropower developing system on the Crisul Repede River. Bulz Dam (17 m height), which is subject to this paper, is located near the confluence between the Iad River and Crisul Repede River and is part of the grayling fishing area, where there are three species of protected migratory fish: The Danube gudgeon (Gobio uranoscopus), the barbel (Barbus barbus) and the common nase (Chondrostoma nasus). In order to facilitate the possibility of migration of the above mentioned migratory fish species upstream of Bulz dam, we recommend to perform the execution of a canal for migrating fish, which is fastened to the right abutment of the dam. The achievement of such migration system suggested in this paper will help restoration the longitudinal connectivity of the Iad River on a length of about 5 km, creating optimal conditions for the development of aquatic fauna