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Waquoit Bay TN: Long-Term vs 2010 - 2016 <br /> LongTerm mean m2010-2012 ki 2013-2015 m2016 <br /> 2.5 <br /> 2.0 <br /> °M Threshold <br /> z 1.5 <br /> 0,38 mglL <br /> 1.0 <br /> 0.5 <br /> R; ,b, Y � R . P,Y •.. <br /> E <br /> 0.0 <br /> E <br /> Figure 7. Distribution of Total Nitrogen within the Waquoit Bay Estuarine System,long-term and during the summers of 2010 <br /> through 2016, Nitrogen enters through groundwater inflows all along the shoreline,with additional"point"loads from the upper <br /> regions of the watershed via Moonakis River,Childs River,and Red Brook. These nitrogen loads plus recycling within the <br /> estuary mix with the low nitrogen waters of Nantucket Sound entering through the tidal inlets to create the observed gradient.CR <br /> -Childs River,ER-Eel River,QR-Quashnet River,IP-3ehu Pond,GR-Great River,LR-GR-Little River=Great River <br /> confluence,HP-Hamblin Pond,SeaR-Seapit River,WB-Waquoit Bay main basin;head-uppermost reach,mid-middle <br /> reach,to-lower basin near mouth or inlet. The red line shows the offshore TN concentration(0.28 mg/L)and"Threshold"is the <br /> TMDL target for restoration. <br /> 25 <br />