The second person confirmed to have died in devastating flash floods that ripped through the Grand Canyon has been identified as a father of three from Texas as authorities continue searching for a missing hiker.

Brent Rosenkranz, 42, was publicly identified on social media by his wife on Monday. The National Park Service confirmed on Tuesday that he was one of two people whose bodies have been recovered. 

The significant flash floods hit parts of the Grand Canyon on Saturday around 2.30pm, sweeping hikers and backpackers off trails near the Colorado River.

Search crews used night vision goggles and other equipment to find people who needed to be rescued during the deluge, Incident Commander Dave Black said at a news conference Monday night.

By sunset on Saturday, 45 people were rescued. The next day, 37 more were evacuated. Officials at the time said they believed another 15 people remained missing.

But by Sunday evening, Black said there was 'no reason to believe, from the tips we've been through so far, that there's anybody besides the one missing person.'

The National Park Service likewise stated in a press release on Tuesday: 'One member of the hiking group remains missing. Search and rescue operations are ongoing, with teams continuing efforts to locate the missing hiker.'

The man who is still missing appears to be 53-year-old Texas pilot Timothy Smith, as his family has reported he was hiking with the two men whose bodies have been recovered and that they have not heard from him. 

Rosenkranz, the second identified victim, was a father of three boys and had been married to his wife, Elisha Rosenkranz, for 21 years. 

The husband and wife co-founded a martial arts school called Texas Elite that is licensed by ATA Martial Arts in Granbury, Texas, a small city southwest of Dallas. 

The hikers who were killed and the one who is still missing were all friends who lived in Granbury or had family there. All of the families also appear to be involved in martial arts, according to their social media pages. 

An online fundraising effort has been organized to help Elisha pay for funeral expenses and the cost of transporting her husband's body back to Texas. 

On Facebook, she described Brent as her 'balance' and said he 'created a meal for every event, every milestone, and sometimes just because it was Tuesday, always with the same mad-chef style and incredible attention to detail.'

'Together, we created three amazing kids who are the perfect mix of both of our crazy, and I love every bit of them. Each of them carries a part of you, and that makes them even more special to me,' she added. 

The other man whose body has been recovered was identified as 46-year-old John Giusti, a chiropractor and father of three. 

In a separate fundraiser for the Giusti family, John's wife, Janet, said her husband was living out 'a lifetime dream exploring the majesty of the Grand Canyon when tragedy struck.' 

'While our grief is as vast and profound as the canyon itself, we find a small comfort in knowing he spent his final moments surrounded by breathtaking beauty, living life to the fullest,' Janet added.

On Facebook, Elisha thanked the community of the martial arts school she co-founded with Brent for 'the overwhelming number of messages I have received.' 

'During this incredibly difficult time, your words have reminded me that Brent and I truly did live our dream,' she added. 

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