The National Park Service is expecting over 100,000 visitors to Lake Mead National Recreation Area over the Labor Day weekend. Park rangers want to remind visitors that a fun time at the lake begins with being safe and responsible.

The National Park Service encourages both boaters and beach swimmers to wear life jackets. For children 12 and under, they are required to be worn while on a boat.

Children caught wearing their life jacket will be rewarded by park rangers with a free t-shirt.

Visitors will see more rangers patrolling in areas such as Placer Cove on Lake Mohave, near Nelson, Nev. That area was recently closed to alcoholic beverages.

All rangers will continue their education efforts about new rules prohibiting glass and Styrofoam containers in the entire park. That ban went into effect in March but penalties won't be enforced until January 2010.

Park maintenance crews are asking visitors to help keep the lake clean by making sure they throw away their trash. Receptacles are located throughout the park in picnic areas, near beaches, along roadsides and launch ramps.