Authorities say the intervention on the Casais dyke on the Mondego River has provisionally restored watertightness, stopping water passing from the riverbed to adjacent fields and allowing drainage of flooded land, Público and RTP report. The repair is described as temporary and aimed at stabilising the area near Coimbra and the A1 motorway while longer repairs are planned. Residents and drivers near Coimbra should note reduced immediate flood risk but follow municipal updates on road access and land clearance.
Temporary repair completed on Mondego dyke
Sunday, 22 February 2026AI summary
Context & Explainers
The Mondego River is the longest river entirely within Portugal, about 234 km long, rising in the Serra da Estrela and flowing west through Coimbra to the Atlantic at Figueira da Foz. Rising Mondego levels often cause floods in Coimbra and downstream towns, so people in the river basin should monitor alerts and avoid riverside areas during heavy rain.
A dyke is a built embankment or wall that holds back water from a river, sea or lake to protect land and property. In flood or irrigation operations, fixing a dyke's watertightness stops water passing into adjacent fields and lets crews pump or drain still-flooded areas to return land to use.