Water isotope data for Northwest Branch Anacostia River, MD, USA

This resource includes water isotope data from Northwest Branch Anacostia River near Hyattsville MD (NWB1) and near Colesville, MD (NWB2), as well as precipitation data collected in University Park, MD. Stream grab samples are collected biweekly; precipitation samples are collected for every precipitation event. Samples are analyzed for d18O and d2H on a Picarro L 2120-i water isotope analyzer at UMBC. Data are collected for the purpose of (1) cross-site comparison with other sites in the Urban CZ cluster; (2) determination of the local meteoric water line; and (3) calculation of mean watershed transit times. Stream sampling sites are co-located with USGS stream gaging stations 01651000 (NWB1) and 01650500 (NWB2). This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network.