This data set contains the results from monitoring in the St. Thomas East End Reserves (STEER) in St. Thomas, USVI, from January 2012 to November 2013. The monitoring was conducted by project partners at the University of the Virgin Islands, and was part of a larger project to conduct an integrated assessment of the STEER. The data set includes measurements of nitrate, nitrate, ammonium, urea, orthophosphate, dissolved inorganic nitrogen, dissolved organic nitrogen, total nitrogen, total phosphorus, orthophosphate, bulk sediment deposition, terrigenous, organic, and carbonate sediment fractions, and total suspended solids (TSS).