De-authorizing navigation on the Missouri River would do wonders to ensure a robust water supply for irrigation and recreation in the Midwest—although at a cost to certain interest groups, many of them downstream. Photo: Harry Weddington, Omaha District, USACE Some call for de-authorizing navigation to relieve restrictions on water for crops. Photo: Harry Weddington, Omaha District, USACE Spillway is at Gavins Point Dam, near Yankton, S.D. Every option is on the table as the U.S. Army Corps of Engineers launches a study to challenge whether the “eight purposes” enshrined in a 66-year-old federal act that governs water management policy on
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.