Storm Dennis: The barrage protecting Cardiff
When the River Taff hit its highest level in more than 40 years on Sunday - it put one location on red alert: Cardiff Bay.
Staff operating the barrage there knew they had to act to help protect the city from flooding - as 803 cubic metres per second of water flowed into the bay.
It is the highest deluge ever experienced since the barrage was built and opened in November 1999.