A fascinating visit to the Denver Sluice Complex today with a group from #U3AC (University of the Third Age in Cambridge). The complex is a critical centre of #flood control and water management infrastructure for a large part of East Anglia.
The first sluice at this location was constructed in the 17th century as a key step in drainage of the #Fens. The present complex of sluices has successfully enabled prevention of serious flooding and management of drainage in the large catchment for decades, but how long it will continue to be able to function so effectively as sea-level rises in future is uncertain.

@PoLaRobs I love going to see unloved and under appreciated infrastructure like that! It's fascinating to me how complex our society is and yet it's built on these kind of machines chunting along in the background...

(Also, I had no idea there was a Denver in England, though I might have been able to guess).

@Ruth_Mottram @PoLaRobs
This is the kind of thing that a lot of people in the region would be quite distraught to see re-wilded.
@mrundkvist @Ruth_Mottram
The problem is that sea-level rise threatens to rewind the whole region, and as a society we have to decide how much we're willing to invest to stop that from happening.
@PoLaRobs
The Dutch can tell you all about that issue.
@Ruth_Mottram
They're machines, but not automated. Two Environment Agency staff live on site and operate the sluices and locks on the basis of their assessment of information from a network of river level sensors and rain gauges in the catchment, and knowledge of the tides.