Mesa Park, also known as Wonderland Lake, is a captivating water resource located in Boulder, Colorado. This local government-owned facility serves multiple purposes, including providing a peaceful spot for recreation and supporting fish and wildlife through its pond. Built in 1907, Mesa Park features an earth dam with a height of 23 feet and a length of 1245 feet, creating a storage capacity of 260 acre-feet.

With its picturesque setting and high hazard potential, Mesa Park is a vital water resource managed by the Colorado Department of Water Resources. The dam's spillway, at 102 feet wide, helps regulate water flow, with a maximum discharge of 3480 cubic feet per second. Despite its age, the dam is in satisfactory condition and undergoes regular inspections to ensure safety and compliance with state regulations.

Water and climate enthusiasts will find Mesa Park to be a hidden gem in the Fourmile Canyon Creek watershed, offering a unique blend of recreational opportunities and environmental benefits. Its historical significance, combined with its modern safety measures and regulatory oversight, make Mesa Park a must-visit destination for those interested in water management and conservation efforts in the region.