Dissolved Metal and Metalloid Concentrations for Northwest Branch Anacostia River, Prince George's and Montgomery Counties, MD, USA

This resource includes stream chemistry for the NW Branch Anacostia River, Prince George's and Montgomery Counties, MD. This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network. Stream grab samples are collected biweekly, as well as longitudinal synoptics 2-3 times per year, and analyzed on an ICPMS for 38 dissolved metals and metalloids. Stream sampling sites are co-located with USGS stream gaging stations 1651000 (NWB1) and 01650500 (NWB2). Data are collected for the purpose of (1) trend analysis as a function of space and time; (2) evaluation of the effects of regional geology, anthropogenic perturbations, and weathering processes on stream chemistry; and (3) comparison with stream chemistry from other sites in the Urban CZ cluster.