EDI Staging Environment
Dissolved oxygen levels in the Stockton Deep Water Ship Chanel (SDWSC) have been monitored since 1968 by the Interagency Ecological Program's (IEP) Environmental Monitoring Program (EMP). The SDWSC is located on the San Joaquin River near Stockton, California. Beginning in 1997, 14 stations were routinely monitored typically in summer and fall. Dissolved oxygen impairment can occur in the SDWSC; therefore, two water quality objectives were established. The objectives of the dissolved oxygen monitoring study in the SDWSC are to: (1) determine if dissolved oxygen levels comply with the water quality objectives, (2) monitor long term trends, and (3) detect and document changes along the SDWSC. The EMP collects discrete dissolved oxygen readings near the surface and bottom of the water column during ebb slack tide. The 14 stations are located between Prisoner's Point on the San Joaquin River and ends at the terminus of the channel called Turning Basin. The site locations were selected at the channel markers on the San Joaquin River; therefore, may be referred as station number or channel marker they are located at. Dissolved oxygen and water temperature were recorded 1-meter below surface and 1-meter above the bottom of the channel. Over the period of record the following water quality parameters have been added: water temperature, specific conductance, pH, fluorescence, turbidity, secchi disk and a rating score for the blue-green algae, Microcystis aeruginosa.
EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:
