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SOLUTION TO CREATING A FISH MIGRATION SYSTEM OVER THE BOTTOM/DISCHARGE SILL ON THE SOMESUL MIC RIVER NEAR THE TOWN OF GHERLA
Razvan VOICU1
1National Institute of Hydrology and Water Management, Sos. Bucuresti-Ploiesti 97, Bucuresti, cod 013686, România, Tel.: +40-21-3181115, Fax.: +40-21-3181116, Email: razvan.voicu@hidro.ro
Abstract
Longitudinal connectivity within a hydrographic network refers to the ways in which organisms move and also to energy and material exchanges located throughout the water. Discontinuation of longitudinal connectivity of watercourses caused by waterworks (sills and dams) has a major impact on sediment transport, hydrological regime, downstream moving and biota migration. Hydromorphological elements (river continuity), as well as chemical, biological, physicochemical elements characterize the ecological status of waters. The proposed engineering solution for fish fauna migration upstream – downstream of the discharge / bottom sill near the town of Gherla supports the need to put into practice such measures planned by the Water Framework Directive.
Keywords:Somesul Mic, Gherla, fish migration, solution
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