Houstonians looking to cool off this summer can soon take a plunge in a brand-new water park. The Big Rivers Waterpark and Gator Bayou Adventure Park attractions — part of the new Grand Texas entertainment complex — are slated to open June 29.

Annual passes for the first two attractions are on sale now, park owners announced. The annual passes are available for $59.95 through April, according to the release. The regular price then jumps to $89.99.

The highly anticipated Big Rivers Waterpark, which spans some 40 acres, was set to Memorial Day weekend, however, construction “is going extremely well,” said Grand Texas CEO, Monty Galland, adding that the park “...will be worth the wait.” Eager locals have been watching progress via the park’s Facebook page.

Passholders receive unlimited access to Big Rivers Waterpark whenever it is open to the public, as well as access to Gator Bayou's Wild Isle, Gator Gulch Alligator Exhibit and Big Al's Fishing Hole, according to a statement. Passholders also receive discounts on individual Gator Bayou tickets, food, beverages and merchandise purchased in the parks.

The 365 Pass now on sale for the park is valid for one year starting with the first day it is used. Passes can be purchased online or at the Grand Texas RV Resort, located at 22846 Hwy. 242, New Caney.

Plans for the Grand Texas Theme Park include five roller coasters, live entertainment, and a Texas history theme. Galland says the park is designed for year-round use; other activities at Gator Bayou Adventure Park include such as zip lines, challenge courses, and a petting zoo.

Grand Texas will be located at the intersection of Hwy. 242 and Hwy. 59 in New Caney. The two attractions opening this year are the first scheduled openings for the 632-acre entertainment venue. Construction on Grand Texas' namesake amusement park and a sports complex is expected to begin when Big Rivers is completed.

Watch a video of the Big Rivers park, courtesy of CultureMap content partner ABC13.