Five monitoring sites have been selected in the Grasslands wetland channels. These sites include Site F (Salt Slough), Site J (Camp 13 ditch), Site K (Agatha Canal), Site L (San Luis Canal), and Site M (Santa Fe Canal). These sites are presently receiving agricultural sub-surface drainage, but will cease receiving drainage as a result of the GBP. Water quality monitoring of these sites will allow evaluation of the assumption that water quality will improve in these channels, and that the increased incidence of water quality objective violations in Mud Slough (north) will be offset by a corresponding reduction in accedences objectives in Salt Slough.