Navigation and service

River continuity in navigable waterways: Consulting, research, quality assurance

Most of our navigable waterways do not allow the unhindered migration of fish or other aquatic organisms and the natural transport of sediment. Many impoundment weirs must be equipped with upstream fish passes so that migratory species can follow their natural life cycles again. The restoration of the river continuity in navigable waterways is a challenging task. The BfG advises – in close cooperation with the BAW – the Federal Ministry of Transport (BMVBS) and the Waterways and Shipping Administration (WSV) regarding the priority of actions, their implementation, and in matters of quality assurance.

Many aquatic organisms, whether fish or invertebrates, move during their life cycles between different regions along the river course, from headwaters to estuaries or vice versa. In waterways that were impounded to facilitate navigation, the river continuity is usually strongly impaired or at least hindered. Many impoundment weirs constitute insurmountable obstacles to fish and other organisms, so that according to the European Water Framework Directive (WFD) the Federal Waterways and Shipping Administration (WSV) has to restore the river continuity at many of the weirs that it owns or operates. The BfG and the Federal Waterways Engineering and Research Institute (BAW) advise the WSV in the planning, execution, and quality assurance of the required measures.

More on the topic "River continuity in Federal waterways“ (in German language)

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