Reservations for Squantz Pond State Park are full for the 4th of July holiday, the Connecticut Department of Energy and Environmental Protection announced on Wednesday.

Only those with reservations will be permitted to enter the New Fairfield park on Thursday, according to DEEP. Additional visitors are encouraged to go to ctparks.com to make plans to visit alternate locations, including Sherwood Island State Park.

Earlier this spring, DEEP announced a new online reservation system to manage the increasing number of visitors at Squantz Pond on summer weekends and holidays.

“Park visitors have embraced the new reservation system, and July 4th is the first time that reservations have filled in advance,” the department said in a release on Wednesday. “DEEP is pleased with the public’s utilization of the reservation system and anticipates that Squantz Pond State Park will continue to fill in advance on summer weekends (reservations are also full for Saturday, July 13), and encourages visitors to purchase reservations before attempting to visit the park.”

As of Wednesday at 6 p.m., reservations were still available for July 5-7 at www.reserveamerica.com.

According to DEEP, Squantz Pond State Park often fills to capacity, leading to crowded conditions and travel disruptions.

“To help improve the visitor experience and avoid these operations challenges, DEEP launched a new reservation system to enable visitors to secure a parking spot up to 14 days in advance for summer holidays and summer weekends,” the department said.

The new system allows visitors to see if parking spots remain in order to plan holidays and weekends accordingly.

Since Connecticut state parks often fill to capacity on summer weekends and holidays, DEEP updates park closures in real time on its X social media feed @CTStateParks.