Debate over detailed solutions to close the gap in funding the nation’s water infrastructure needs has begun. Rep. Earl Blumenauer (D-Ore.) introduced legislation on July 15 to establish a Clean Water Trust Fund for repairing and upgrading the nation's drinking-water and wastewater treatment systems. Photo: The Office of Earl Bluemenaur Blumenauer starts debate on water trust fund. The bill aims to amass $10 billion in annual funding through a mix of taxes on bottled beverages, corporate profits, pharmaceuticals and products typically disposed of in wastewater. Almost half the funds would be distributed as grants and loans through the existing Clean
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.