Despite their prevalence in many landscapes across Canada, swamps are under-represented in carbon accounting and modeling due to difficult access and unclear classification relative to other wetland types resulting in lack of swamp-specific data. Currently, most data on swamps comes from subtropical and tropical sites rather than temperate and boreal regions as found in Canada. We studied 12 swamps across southern Ontario, Canada for a full annual cycle to estimate carbon pools and fluxes and assess if they varied significantly with hydrogeomorphic setting or canopy type in an extremely dry year. Although there were no significant differences between setting or canopy type, soil carbon pools in the swamps ranged from ~26 – 219 kg C m-2 and were highest in deciduous sites. Similarly, carbon stored in the wood of trees did not significantly differ but ranged from ~7 – 36 kg C m-2 and were highest in deciduous sites. Dry soil conditions during the study year and low understory vegetation cover resulted in CO2 efflux across the sites with no significant differences between hydrogeomorphic settings or canopy types. Methane emissions varied moderately across hydrogeomorphic settings and canopy types, with many sites acting as a net sink for CH4 over the year. In the absence of near-surface water tables, soil temperature became a strong factor in soil carbon processes. Overall, variation in carbon stocks and fluxes were more controlled by site-specific conditions suggesting that carbon in swamps cannot be accurately estimated using hydrogeomorphic setting and canopy type only.