According to City of Richland Facebook page:
The Richland Regatta Boat Races are in town this weekend, it brings some detours/closures .
Boat Launch and Columbia River Closures:
The North Howard Amon boat launch will be closed for the races...
The Army Corps of Engineers warn boaters of high water and swift currents on the Columbia River.
Some boat launches along the Columbia River might not be accessible.
The Bureau of Reclamation issued a warning about high water flows, debris, strong currents and very cold water through at least the next week...