Coloradans watched for more spills in flooded oilfields as crews waited for the waters to recede so they could begin cleanup operations.
Four new spills were discovered Friday, including 2,400 gallons of oil from a toppled storage tank and almost 900 gallons from an unspecified source. Oil spilled from two other damaged tanks but authorities did not know how much.
That brings the known volume of oil released since massive flooding began last week along Colorado's Front Range to an estimated 22,060 gallons or about 525 barrels.
Most of the oil releases reported to date came from tanks operated by Texas-based Anadarko Petroleum Co. At least four of the releases reported by the company were in Weld County and spilled oil into the South Platte River or a tributary, according to information submitted to regulators.