A team of good Samaritans teamed up in Houston to save an elderly man from being swept away by floodwaters.

Drivers noticed the man's SUV getting submerged by the rising flood, and formed a human chain to pull him to safety.

He was evacuated to the hospital and reunited with his family.

Hurricane Harvey has caused many ordinary citizens to work together and help others. Videos have been trending on the internet of a group of cowboys volunteering to save trapped livestock.

After rescue forces announced that they were overwhelmed by the sheer magnitude of the storm, an armada of boaters from across the southern United States known as the 'Cajun Navy' pitched in to save trapped citizens and their possessions.