Wetlands play an essential role in regulating the Earth's hydrologic and biogeochemical cycles. Amounts of soil carbon and manganese are hypothesized to influence soil carbon oxidation and manganese reduction. Four soils with differing amounts of soil carbon and manganese were saturated and manganese oxidation was assessed following a saturation period. These interactions may be valuable when using manganese oxide as an indicator of wetland reduction potential and biogeochemistry dynamics related to manganese and carbon.