Hollenback Township is a township which is located in Luzerne County, Pennsylvania, United States. The population was 1,125 at the time of the 2020 census.

Big Wapwallopen Creek is a tributary of the Susquehanna River in Luzerne County, Pennsylvania, in the United States. It is approximately 23 miles (37 km) long and flows through Bear Creek Township, Fairview Township, Rice Township, Wright Township, Dorrance Township, Hollenback Township, Nescopeck Township, and Conyngham Township. The watershed of the creek has an area of 53.2 square miles (138 km2). The creek has three named tributaries: Balliet Run, Watering Run, and Bow Creek. The creek is designated as a Coldwater Fishery and a Migratory Fishery and is also Class A Wild Trout Waters for part of its length. However, a portion is considered to be impaired by organic enrichment and/or low levels of dissolved oxygen and its pH ranges from moderately acidic to slightly alkaline.