A new offer from Indiana State Parks and Reservoirs makes weeknight camping more affordable during September.

Those who book a new campsite reservation for one or more weeknights (Sundays through Wednesdays) during the month will receive 20 percent off of their reserved weeknights at the time of booking.

The offer applies to all State Parks and Reservoirs campgrounds, Deam Lake and Starve Hollow state recreation areas, and Greene-Sullivan State Forest.

Reservations can be booked at camp.IN.gov or by calling (866) 622-6746. The reservation must be booked and used by Oct. 8. Use the promo code “CAMPIN14.”

The offer does not apply to reservations made before Aug. 27, or to reservations made in combination with any other discount or offer. The offer does not apply to walk-in registrations.

The offer excludes Labor Day weekend.