UPDATE 7/23/12 @ 6:15 p.m.
LAWRENCE COUNTY, Ky. (WSAZ) -- After two days of search and recovery, another drowning victim's body was recovered Monday afternoon.

WSAZ.com’s Randy Yohe was on the scene at Yatesville Lake.
And once again, it was a swimmer -- who for a still unknown reason -- could not stay above water. And it happened in one of the narrowest, shallowest sections of the lake.

Lawrence County Sheriff Garrett Roberts says a 25-year-old man from Matewan, W.Va., was camping out with friends on a hot Sunday afternoon and decided to take a swim.

About 24 hours later, his body was pulled from the calm but murky waters.

It's not much more than a football field's distance across the Blaine Creek channel at the Yatesvile Lake Lawrence County Campground. But Roberts says when Shawn Blackwell tried to swim across and back Sunday afternoon, he never returned to his home shore.

“He got in trouble, asked for help, went down, came back up, went down again, and did not come back up,” Roberts said.

With family and friends keeping vigil into the second day of recovery in zero-visibility water, dive teams used a side-scan sonar device that detects a human body.

“It's designed to pick up soft and hard tissue, fleshy items -- that kind of stuff,” diver Kyle Morgan said.

Then using the sonar readout, recovery teams from Louisa and Grayson worked with air tanks and ropes to sweep the murky waters.

“They make a fan pattern, then dive and let out rope and cover 5-foot intervals,” Morgan said.

The painstaking effort is tough on all involved – both those waiting and those working.

“Our hearts go out to the family with their loss," EMS Director Harold Slone said. "Even though they are not from here, they feel like a family to us because it happened in our lake, and we will do all in out power to bring them closure.”

Blackwell’s body was recovered about 3 p.m. Monday. With plenty of local support, three dive teams from Louisa, Grayson and Ashland worked as one unit to make the recovery.

This is the fifth lake or river drowning we've covered this summer. The best preventive advice is to do what the sheriff says Blackwell did not do -- swim with a buddy and wear a flotation device. That's because you never know what might happen.

This is only the second drowning at Yatesville Lake since the Corps of Engineers project was established in 1992.

Lawrence County Emergency Manager Director, Harold Sloane tells WSAZ.com that the body of Shawn Blackwell, 25, of Matewan, W.Va. was recovered about 3 p.m. Monday.

The incident was reported just after 3:30 p.m. Sunday.

Sheriff Garrett Roberts.says Blackwell was swimming across a narrow section of the lake, about 150 feet from shore, near Boones Landing when he went under twice and then didn’t come back up.

Crews searched the area until 9:45 Sunday night.

They resumed the search at 8 a.m. Monday using “side scan sonar” in an effort to locate Blackwell’s body.

The incident was reported just after 3:30 p.m., according Lawrence County, Ky. Sheriff Garrett Roberts.

Sheriff Roberts says the victim is Shawn Blackwell, 25, of Matewan, W.Va.

We’re told Blackwell was swimming across a narrow section of the lake, about 150 feet from shore, near Boones Landing when he went under twice and then didn’t come back up.

Crews searched the area until 9:45 Sunday night.

They resumed the search at 8 a.m. Monday using “side scan sonar” in an effort to locate the body.

We have a crew at the scene.

Keep clicking on WSAZ.com for the latest information.