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Impacts of hydro-morphological pressures

The physical modification of water bodies can affect the hydrology of freshwater systems, obstruct up and downstream migration, disconnect rivers from floodplains and wetlands, and change the water flow. The three key components of hydro-morphological pressure are (Figure 4.2):

• change in hydrological regime;
• interruption of river and habitat continuity and disconnection of adjacent wetlands/floodplains; and
• change in erosion and sediment transport.