With additional rain on the way, the risk of more flooding was still high in saturated parts of central Texas.

A July Fourth weekend deluge in Texas caused catastrophic flash flooding that has killed more than 80 people. Camp Mystic in Kerr County says Monday morning that it is “grieving the loss” of 27 campers and counselors as the search continues for victims of the disaster.

Walmart, Sam’s Club and the Walmart Foundation are committing up to $500,000 to support Texas flood relief efforts. This includes up to a $250,000 match of customer and member donations, that can soon be made online or in-stores and clubs in Texas, through the Walmart and Salvation Army match campaign.

At least 80 people are dead and many more are missing in Texas in the wake of torrential rains and resulting flooding. By far the greatest number of fatalities occurred in Kerr County, where 68 people are believed to be dead,