TEXSAR, an Austin-based nonprofit first responder organization, has deployed swiftwater teams, boats, drones and K9s to help search for missing people. It hopes to raise $100,000 to maintain its operation. Donations can be made online.

Social media users shared the news far and wide, highlighting the importance — and the difficulty — of separating fact from fiction during a disaster.

Camp Mystic, a Christian girls' camp, reported that they lost 27 campers and counselors in the devastating floods, with 11 still missing. Several of the victims were from the Houston area.