Dark Hollow is also located within Solebury Township and New Hope Borough, and is a second order stream with an approximately 0.7 square mile watershed. The portion of the watershed within Solebury Township is zoned residential and agricultural. Primary land use in the watershed is forested, residential, and agricultural. The extensive amount of wooded areas within the watershed may be partially due to the steep slopes within the watershed. The watershed is located primarily within the Brunswick formation and underlain by diabase.