With the death toll from the catastrophic floods in the Texas Hill Country now topping 130 people, heavy rain further complicated the search for the missing. It comes as NBC News has learned new details about the response at Camp Mystic as floodwaters were rising.

If you would like to volunteer to help with flood recovery, the city said to register in advance online. Registered volunteers are asked to come to Tivy Antler Stadium, located at 1310 Sydney Baker Street in Kerrville. Check-in starts at 8 a.m.