Expert report on hydropeaking measures
The expert report, prepared under the direction of eQcharta GmbH, presents experiences and findings from the application of the “Hydropeaking measures” implementation aid module (Tonolla et al., 2017) in remediation projects and from new research projects in the field of hydropeaking in recent years. It offers fundamental considerations and explanations that can be helpful for […]
Bedload dynamics in the Wiese estuary – Canton Basel
High-resolution information on the depth conditions of the Wiese estuary near Basel was required as part of hydraulic engineering measures to estimate bedload dynamics and for modeling purposes. eQcharta GmbH carried out recordings with an Acoustic Doppler Current Profiler (ADCP) in two consecutive years. This enabled the assessment of the bathymetry and water depths and […]
Impact monitoring of restoration – Canton of Bern
Impact monitoring (WiKo) proofs whether watercourse restoration brings the expected structural and ecological improvements. In the Canton of Bern (2021-2023), Hunziker Betatech AG led the WiKo on 11 watercourse sections. eQcharta as deputy project manager was responsible for processing the indicator sets habitat diversity and dynamics as well as temperature in different watercourse sections and […]
Bedload and habitat dynamisation with artificial floods on the Saane – Canton Fribourg
In recent decades, the maintenance of reservoirs with residual flow management in the Saane River has led to a lack of bedload dynamics and a deficit. The consequences included strong vegetation development, extensive restriction of morphological dynamics with habitat losses and clogging of the river bed (colmation). The artificial floods released since 2016 support relocation […]
Dimensioning of artificial floods for floodplain restoration of the Saane – Canton Fribourg
In the Saane River, decades of residual flow management resulted in a lack of flow and bedload dynamics and thus to a macrozoobenthos community with low diversity. The artificial floods released since 2016 have led to positive changes in biodiversity, including an increase in EPT taxa, as an indicator of variable flow and good habitat […]
Temperature change in the Sarneraa – Canton Obwalden
In August 2022, almost 27°C were measured in the Sarneraa, with cooler estuaries of tributaries presumably allowing the survival of trout and grayling. Detailed information on water temperature and possible cold water areas were therefore requested by fishing associations and commissioned to eQcharta GmbH by the Department of Natural Hazards and Hydraulic Engineering of the […]