Not precisely documented; the park covers about 21 acres with a network of marked walking trails.
Is there an entry fee at North Branch Tributary Park?
Springfield has no parking sticker program for its parks; the city's swimming is at public pools, which use a free resident Pool Pass instead. No pass or permit required.
Can I bring my dog to North Branch Tributary Park?
Springfield requires dogs to be leashed whenever off the owner's property, including in every city park. That's the town-wide default; watch for posted signs here.