Dupage Policy Journal

The Forest Preserve District of DuPage County has reaffirmed its commitment to the dark sky movement and adherence to guidelines developed by DarkSky International, a leading authority on light pollution. This decision was announced at a recent board meeting.

Recognizing the detrimental effects of light pollution on various species, including amphibians, birds, mammals, insects, and plants, the Forest Preserve District manages 26,000 acres of land with only 125.6 acres currently impacted by lighting. Specific examples include Pratt’s Wayne Woods in Wayne and Springbrook Prairie in Naperville, where just one acre each is affected by district-emitted lighting.

“We’re regrouping to see where we can take things even further,” said Jason Berger, facilities manager at the Forest Preserve District. “We’re conducting a comprehensive exterior lighting audit to eliminate any unnecessary lighting altogether and to identify additional opportunities for improvements.”

The district prioritizes outdoor lighting in its capital projects planning and is retrofitting or replacing existing systems as part of routine maintenance. The evaluation process follows DarkSky International’s five principles for responsible outdoor lighting: useful, targeted, low-level, controlled, and warm-colored.

“Artificial outdoor light can disrupt the natural environment for many species,” said Erik Neidy, director of Natural Resources. He highlighted how nocturnal animals use darkness for hunting cover and how migrating birds navigate by moonlight and starlight. Additionally, he noted that artificial light attracts insects which can disadvantage certain species like lightning bugs.

Lighting upgrades are prioritized in the current budget year with enhancements planned or underway at Fullersburg Woods in Oak Brook; Greene Valley in Naperville; Herrick Lake in Wheaton; Hidden Lake in Downers Grove; Churchill Woods in Glen Ellyn; Danada in Wheaton; and Blackwell family campground in Warrenville. Fixtures will be DarkSky compliant and energy-efficient.

Safety remains paramount for visitors and staff. Facilities Management collaborates with Law Enforcement on fixture placement using motion sensors, timers, manual switches, and other technologies.

In celebration of dark skies appreciation, the district will cohost “Astronomy Night” on Oct. 7 at Greene Valley with the Naperville Astronomical Association. The event includes stargazing and planet viewing with telescopes provided. Admission is $10 per car with registration available online or via phone.

For over 100 years, the Forest Preserve District of DuPage County has connected people to nature through its preserves and programs visited by more than 5.5 million people annually. For more information call 630-933-7200 or visit dupageforest.org.