Upper parts of the Rancocas Creek, North Branch. Rancocas Creek Flows West. Originates in the NJ Pine Barrens National Reserve. Maps appreciate North Branch Drainage and Flow Patterns. Over the winter months Rancocas Creek’s natural history, geology, water resources, issues and various other areas will be presented. Enhanced awareness of the Rancocas Creek Watershed is crux for protecting and preserving public access for multi-use recreation inside the 360 Square Mile Rancocas Creek Watershed.