(CNN) — The families of 13 girls and two counselors who died in the catastrophic flooding that swept through Camp Mystic this summer are suing the Texas camp and its owners, accusing them of gross negligence, according to four lawsuits filed this week.

The flurry of litigation marks the first wave of legal action by victims’ families against the all-girls Christian camp since 25 girls and two counselors died in the July 4 disaster.

Many of the youngest victims were housed in the cabins closest to the Guadalupe River, which swelled to a deadly torrent amid epic rainfall and flooding. Richard “Dick” Eastland, who co-owned Camp Mystic with his wife, Tweety, died trying to save some of the girls, a family spokesperson has said.

One lawsuit was filed by the families of five campers and two c

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