The interim GBP is intended to remove unusable water from wetland water supply conveyance channels. The project, by combining drainage flow within the SLD, will provide the opportunity for more focused monitoring which may in turn result in improved management of those flows. The project should allow for better measurement of the selenium load being discharged from the Grassland Basin. Further, the monitoring program will provide data which may elucidate the selenium flux (e.g. in-transit losses) between the water column, biota and sediment. Finally, the results of this monitoring program, coupled with information about concurrent drainage management techniques that may be employed by the SLD-MWA, may aid in the identification of effective means by which to improve drainage management in the Basin and attain regulatory water quality standards.