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LEWISVILLE (CBSDFW.COM) – The weather this weekend is expected to be very hot and sunny. And, just in time for the summer conditions, Lewisville Lake is opening back up for boaters on Friday. However, not everybody is able to take advantage of the lake quite yet.

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Only boats that are already docked in the water are allowed out on the lake. The public boat ramps are staying closed.

Rain over the last couple of weeks had shut down the fun on Lewisville Lake. Overflowing water flooded campgrounds, parking lots and boat ramps. It was not only dangerous for boaters, it was a hazard for nearby homeowners too. As the water was so high, a large wake from a passing boat could have easily caused a house to flood.

Washed up debris was also creating safety hazards for anyone near the lake.

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Now, after a week of sunshine and warm temperatures, conditions at Lewisville Lake are easing back to normal, letting the Army Corps of Engineers open up the gates at Pier 121 and East Hill Park. But some docks are still underwater and some private marinas are still not operating as usual.

The manager at Pier 121 expects at least a couple thousand boaters to come out this weekend. Anyone who plans to visit the lake is advised to first perform a safety risk assessment. Look for debris around the vessels, and check for insects or snakes in boats or moving through the water.

Also, lake landmarks have changed and many trees are still submerged, which could create problems. “Inexperienced boaters,” said Pier 121 manager Bryan Horne, “the biggest challenge they’re going to have is, they actually have access now to more parts of the lake because the water is up. That’s where all the hidden dangers are. Because now you’ve got trees under the water where they could have seen those in months past.”

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The Magellan Sailing Center crew got onto the lake for sailing lessons for the first time since flooding began. “It’s great. You go out and can go anywhere right now, because all the trees up on the north area are way submerged, so we can sail as far as where we want to without hitting anything,” said sailing instructor Paul Corey.