River Spirit Casino Resort Chief Executive Officer Pat Crofts estimates the resort will remain closed through the month of June.
The resort was evacuated and closed a week ago due to the flood risk. The Muscogee Creek Nation says water is seeping into the lower level of the River Spirit Casino Resort.
Flooding from the Arkansas River is also covering the outside swimming pool and several parking lots. The water has made it inside the lowest level, where the entry to the outdoor pool is located.
The casino says the tower was designed to withstand a major severe weather event, and they have engineers on site evaluating the other buildings.