This report presents results of chemical analysis for samples collected during March 1995 as part of a study to quantify the interaction of aquatic organic material (referred to here as dissolved organic carbon (DOC)) with dissolved metal ions. The work was done in conjunction with the South Florida Water Management District, the U.S. Environmental Protection Agency, the USGS South Florida Ecosystems Initiative, and the South Florida National Water Quality Assessment Study Unit. Samples were collected from surface canals and from marsh sites. Results are based on onsite and laboratory measurements for 27 samples collected at 10 locations. The data file contains sample description, DOC concentration and specific UV absorbance, and additional analytical data for samples collected at several sites in the Water Conservation Areas, the Everglades, South Florida.