We investigated the transport dynamics of dissolved and particulate fractions of both mercury (Hg) and organic carbon during the spring 2000 snowmelt in 10 forested and pastured watersheds (2 ha to 111 km²) at Sleepers River, Vermont. Samples were filtered and preserved on-site within 4 hours of collection using ultraclean handling protocols and double-distilled acid. Mercury determination of duplicates by cold-vapor atomic fluorescence spectrometry (n=65) yielded a precision of +/- 6%. Despite a 6-order-of-magnitude lower concentration, dissolved and particulate Hg concentrations tracked variations in the respective dissolved and particulate carbon fractions remarkably close at each site. Significant positive correlations between Hg and carbon also existed when data were pooled from the 10 watersheds of diverse size, land use, elevation, and slope. Dissolved mercury (HgD) ranged from 0.3 to 2.0 ng/L and correlated strongly with dissolved organic carbon (DOC) in stream water (n=64, r2=0.50, p<.0001). The HgD/DOC ratio increased somewhat through the melt period, suggesting that the available supply of DOC was more easily depleted during sustained high flow conditions. HgD correlated positively with stream specific discharge (n=56, r2=0.46, p<.0001) and inversely with alkalinity (n=64, r2=0.43, p<.0001). Particulate Hg (HgP) ranged from 0.3 to 11.5 ng/L and correlated strongly to particulate organic carbon (POC) (n=63, r2=0.84, p<.0001). HgD and HgP behavior was similar (albeit concentrations were generally lower) to that at other Vermont sites, where episodic export of HgP was found to dominate the streamwater flux. Our results are not definitive as to whether the mobility of Hg and organic carbon are biogeochemically linked, or whether they behave alike simply because they reside in a common reservoir – the surficial organic soil horizon -- which accumulates atmospheric mercury deposition throughout the year and is flushed during snowmelt.