Microplastic pollution in freshwater is increasingly studied in the waterways of New York State. Detrimental to organisms, both through physical mechanisms such as false satiation and through chemical mechanisms due to contaminant adsorption and particle leaching, microplastics originate from a variety of yet-to-be-quantified sources. This ongoing study aims to support the quantification and source identification of microplastic pollution in the Hudson River through investigative studies to uncover patterns in microplasic concentrations. The past funding cycle supported four projects. Two found plastic concentrations in rivers vary based on time of sampling and presence of dams. A third found that fish collected from the Hudson River showed signs of preferentially consuming plastic particles. The forth study is still ongoing and looks to compare samples collected using a grab technique to samples collected using a neuston net.