than . The water hardness of the creek (in terms of the concentration of calcium carbonate) ranges from . The concentration of calcium in the creek ranges from . Its magnesium concentration can be as low as or as high as , while its sodium concentration ranges from . There are trace amounts of bromides, phosphorus, orthophosphates, and ammonia in Muncy Creek. All of these occur in concentrations of 0.3 milligrams per liter or less. Nitrites occur in concentrations of less than . The chloride concentration in the creek ranges from . The minimum sulfate concentration is and the maximum is milligrams per liter. The minimum nitrate concentration is milligrams per liter and the maximum is milligrams per liter. The total concentration of nitrogen in the creek ranges from . The concentration of aluminum in Muncy Creek ranges from less than up to and the copper concentration is always less than micrograms per liter. The lead concentration is always less than . In 2013, the creek's concentration of manganese was observed to be . The zinc concentration ranges from less than up to . The nickel and selenium concentrations are less than , respectively, while the boron concentration is less than . The creek's strontium concentration is . Geography and geology The mouth of Muncy Creek has an elevation of slightly less than , while the source of the creek has an elevation of between and . The headwaters of the creek are more than higher than its mouth. The headwaters of Muncy Creek are mountainous and are situated on the Allegheny Plateau. The southern edge of the Allegheny Mountain runs from the creek west as far as Lock Haven or Pine Creek. The valley of Muncy Creek is surrounded by scalloped hills. Muncy Creek's course winds significantly, but flows generally southwest. A narrow belt of the Chemung Formation occurs along Muncy Creek in Shrewsbury Township, Lycoming County. An outcropping of the Catskill Formation also occurs along parts of the creek in Jordan Township, Lycoming County. The Chemung Formation has an outcropping on the creek near Moreland. This outcropping is high and gray in color. It consists of shale and sandstone. Red shale is also found on the creek. In general, rock formations consisting of sandstone and shale are found along much of the creek, while rock formations of limestone occur close to its mouth. The Tombs Run and Muncy