I've only heard of one death so far.

I trust UK sources unless it's one of those ridiculous rags.

Shouldn't be hard to find. Everything I've seen on this family tragedy in particular hasn't been fully sourced yet nor has there been bodies found as of the last time I looked.

Which is why, at the time, it was not being included anywhere.

Strange

What's the actual number?

EDIT: 14 reported dead by a news source I will not link to (faux)

Some are confirmed dead, some not. Some are confirmed to be due to the storm, some not.

Many news channels assume all deaths during a hurricane are due to the hurricane. Because people don't die otherwise, I guess. Really, they just want the number to be as high as possible, not as accurate as possible. Accuracy is a minimal limiting factor, not the goal. High death tolls = viewers.

So one of the fatalities confirmed was due to a heart attack. Storm related? Maybe. But I have a sort of flatfooted way of dealing with the numbers.

(Total dead during the time of the storm and immediate clean-up)
- (the number expected to die of natural causes during that time period)
= storm-related deaths.

People who'd have died from a heart attack from heavy labor at work or in car crashes but who don't die because they're at home or in a shelter are "saved" by the storm but can't be identified. Those who die from natural causes like heart attacks aren't always storm related, but some are. Suicides happen, but might increase during a disaster (or might decline, I have no idea). I think my method of looking at the increase over baseline makes sense. It tends to give lower numbers for most disasters than the media prominently report, though, but I think they're more accurate.

These are the first page of hits in order of what Google returned, minus Breitbart and NY Post which also reported it. (Oddly, The Guardian didn't surface in a search.)

http://www.khou.com/weather/harvey/family-of-6-drowns-inside-van-while-trying-to-escape-harvey-floods/468579903

http://www.nola.com/hurricane/index.ssf/2017/08/family_of_6_drowns_in_texas.html

https://www.aol.com/article/news/2017/08/28/report-family-of-6-drowned-inside-van-hurricane-harvey/23188509/

http://www.foxnews.com/us/2017/08/28/family-6-feared-drowned-while-trying-to-escape-harvey-reports-say.html

http://wreg.com/2017/08/28/six-family-members-believed-dead-after-van-swept-away-while-fleeing-harvey-report/

http://www.dailymail.co.uk/news/article-4830886/Family-6-die-van-swept-away-Hurricane-Harvey.html

The story cycles in and out of the local news quite a bit. KHOU is local and all the local news sources include it.

It's sad, but at the same time the last time I saw it cycle through it always ended a bit sadly: There was no indication that the family was actually in danger (that may have been updated this morning, I haven't checked) but the driver ignored all the warnings not to drive where you can't see the actual road bed. "Don't drown, turn around" is the mantra that we've heard for years in the news, on billboards, in PSAs, on roadway traffic signs. Most of the local news has felt sorry for the kids but used the driver's actions as a warning. Maybe it helped some people. Dunno.