Water isotope data for Pennypack Creek, Philadelphia, PA, USA

This resource includes water isotope data from Pennypack Creek at Lower Rhawn St Bridge, Philadelphia, PA (PPRH) and Pennypack Creek at Pine Road, at Philadelphia, PA (PPRI) as well as precipitation data collected in Fort Washington, PA. Stream grab samples are collected biweekly; precipitation samples are collected for every precipitation event. Samples are analyzed for d18O and d2H on a Picarro L2120-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 01467048 (PPRI) and 01467042 (PPPI). This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network.