The US Army Corps of Engineers says a near tragedy last week on the Mississippi River underscores the need for safety during the Independence Day holiday.

Officials say a disabled pontoon boat was being swept downstream by the fast current on the Mississippi River and was headed straight toward the roller gates on Lock and Dam 3 near Red Wing last Friday. An emergency boat was dispatched and everyone on the pontoon was rescued before it went over the dam. Officials are urging extra caution when boating on the Mississippi due to sediment that is shifting in the areas that are normally much deeper because of the extended periods of high and fast-moving water since the spring melt.