“…A decade after TMDL completion, point sources of nitrogen have decreased, but agricultural nonpoint sources remain problematic (Strickling and Obenour, 2018) and organic nitrogen concentrations have increased (Lebo et al, 2012). As a result, chlorophyll a (chl-a) concentrations exceed the State criterion of 40 µg/L for more than the allowed 10% of collected samples (Deamer, 2009), and hypoxia and fish kills remain common in the estuary (Katin et al, 2019;Paerl et al, 2018a;Rachels and Ricks, 2018).…”