are and . The pH of Heberly Run at its mouth ranges from 4.15 to 6.40, with an average of 5.60. Downstream of Meeker Run, the pH ranges between 3.88 and 6.36. The average pH here is 4.97. At the stream's headwaters, the minimum pH is 3.48 and the maximum pH is 6.30. The average is 4.91. Geography and geology The elevation near the mouth of Heberly Run is above sea level. There are some ravines in the vicinity of Heberly Run. Upstream of the waterfalls, there are smooth sandstone outcroppings in the streambed of Heberly Run. The stream has created a "steep and rugged" glen in the plateau that it is located on. Watershed The watershed of Heberly Run has an area of . It is difficult to access the stream by road. There are a number of waterfalls on Heberly Run. These include Lewis Falls, Twin Falls, Big Falls and several others. Most of these waterfalls are fairly small. Big Falls is high and Lewis Falls is high. The upper Twin Falls are high and the lower Twin Falls are high. There is also an unnamed waterfall that is high. There are also waterfalls on the tributary Quinn Run. The vicinity of Heberly Run is described as "very scenic" in the Sullivan County Natural Areas Inventory. The community of Jamison City is fairly near the watershed of Heberly Run. Biology There are second-growth woods in the watershed of Heberly Run. Trees found near the stream include hemlock and black birch. Other plants living there include wood sorrel and violets. A plant species that is threatened in Pennsylvania is found near the stream, as is one that is endangered in the state. The endangered species is becoming less common in the area. The low pH of Heberly Run makes it difficult for fish to reproduce in the stream. Recreation Heberly Run flows through the Pennsylvania State Game Lands Number 13. This area is less frequently visited than the nearby Ricketts Glen State Park. A hiking trail known as Waterfall Wonderland follows Heberly Run for part of its length. A more difficult version of this hike is considerably closer to the stream and at times goes up the streambed itself. The trail requires bushwhacking in places. See also List of tributaries of Fishing Creek (North Branch Susquehanna River) Sullivan Branch References Rivers of Sullivan County, Pennsylvania Tributaries of Fishing Creek