While wetlands are only approximately 6% of Earth's land cover, they provide crucial ecosystem services that support both wildlife and humans alike. Dense and waterlogged peat soils sequester carbon for extended periods of time without releasing it back into the atmosphere, a key function of wetlands. In this study, I researched how rain events impacted two forested wetlands of different ages by measuring how stream flow through wetlands carry gases laterally across landscapes and how rain events impact gas concentrations in the water. I studied Nelson Brook and Arthur Brook, two streams at the Harvard Forest moving through the Black Gum Swamp and the Beaver Swamp, respectively. I measured the temperature and CH4, CO2, and dissolved oxygen concentrations in the streams at six different sampling locations each week from early June to late July 2024. Due to the young (~25 yr) age of the Beaver Swamp, it has a more unstable ecosystem than the Black Gum Swamp because there are higher amounts of labile carbon in the soils leading to more active microbes. The microbes in the much older Black Gum Swamp (~14,000 years old) have already processed the fresher organic matter and are now left with recalcitrant carbon which doesn’t provide as many nutrients. I expect the gas concentrations in the water exiting the Black Gum Swamp to be lower than that of the water exiting the Beaver Swamp. After periods of increased rainfall, I expect the dissolved oxygen in the water exiting the Black Gum Swamp to be higher than that of the Beaver Swamp. Measuring these processes can help us to better understand the relationship between wetland age and carbon cycling.