At least 34,000 gallons of crude oil spilled into a Louisiana bayou over the weekend, prompting a days-long effort to clean it up.

The spill into Lafourche Bayou was first reported around 7:50 a.m. Saturday.

Lafourche Parish President Archie Chaisson said it came from the Crescent Midstream facility and entered the bayou through a stormwater canal near the intersection of Highway 308 and Highway 182.

Officials said Monday evening that, in total, 820 barrels equaling about 34,440 gallons spilled on facility grounds and then into the water.

The cause of the spill has not been disclosed.

The spill has had a noticeable impact on local wildlife. Seventeen aquatic salamanders, two turtles and one crawfish have been found deceased. Additionally, four ducks and three alligators have been observed with oil on them but have not been captured.