<p dir="ltr">Yearly water quality data collected on a YSI EXO2 multiparameter sonde at the MarineGEO and San Francisco Bay National Estuarine Research Reserve (SF Bay NERRs) Richardson Bay water quality monitoring station. Location: 37.876692, 122.487564. The local time at this site is Pacific Standard Time (UTC-7). Note that timestamps in this dataset are reported as Coordinated Universal Time (UTC).</p><p dir="ltr"><br></p><p dir="ltr">The authors thank the National Estuarine Research Reserve System (NERRS) System-Wide Monitoring Program (SWMP) data group for their collaboration and support. The quality assurance and quality control steps taken on this data set were carried out by the NERRS SWMP. Character codes are applied to denote data that should be removed or to provide comments </p><p><br></p>