A quality-controlled, 10-year (2015–2025) biogeochemical dataset was published for the Saigon-Dong Nai River-estuary continuum in Ho Chi Minh City, Vietnam, addressing a critical observational gap in tropical Southeast Asia. The observing program couples a biweekly time series at four fixed stations with seasonal longitudinal transects across 27 sites, encompassing over 19,800 observations of physical parameters, nutrients, organic carbon, and chlorophyll-a. This openly accessible archive allows researchers to statistically separate short-term monsoonal variability and climate anomalies from chronic anthropogenic baseline shifts, providing a validated empirical foundation for modeling carbon fluxes and eutrophication in dynamic tropical coasts.
Data repository: https://doi.org/10.23708/KMFNNY