Abstract. A historical dataset of river chemistry and discharge is presented
for 140 monitoring sites along the US East Coast, the Gulf of
Mexico, and the US West Coast from 1950 to 2022. The dataset, referred to here
as River Chemistry for the U.S. Coast (RC4USCoast), is mostly derived from
the Water Quality Database of the US Geological Survey (USGS) but also
includes river discharge from the USGS's Surface-Water Monthly Statistics
for the Nation and the U.S. Army Corps of Engineers. RC4USCoast provides
monthly time series as well as long-term averaged monthly climatological
patterns for 21 variables including alkalinity and dissolved
inorganic carbon concentration. It is mainly intended as a data product for
regional ocean biogeochemical models and carbonate chemistry studies in the
US coastal regions. Here we present the method to derive RC4USCoast and
briefly describe the rivers' carbonate chemistry patterns. The dataset is
publicly available at https://doi.org/10.25921/9jfw-ph50 (Gomez et al.,
2022).
