Some major shipping channels in Texas remain closed as crews work to clean up after an oil spill. 

Early Saturday an oil barge and a cargo ship collided in the Houston Ship Channel, spilling 168-thousand gallons of fuel oil. 

The channels deliver crude to more than a tenth of the nation's refining capacity. 

The spill also forced the closure of the Intercoastal Waterway.

  Coast Guard officials said today that cleanup crews have pumped all remaining fuel oil from the barge and The Channel will stay closed until "clean water is assured."