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San Joaquin River Dissolved Oxygen TMDL - Required Studies

San Joaquin River Dissolved Oxygen TMDL - Required Studies

The TMDL required the completion of specific oxygen demand and precursor studies. These source and linkage studies were to identify and quantify:

  1. Sources of oxygen demanding substances and their precursors in the dissolved oxygen TMDL source area
  2. Growth or degradation mechanisms of these oxygen demanding substances in transit through the source area to the DWSC
  3. The impact of these oxygen demanding substances on dissolved oxygen concentrations in the DWSC under a range of environmental conditions and consider the effects of chemical, biological, and physical mechanisms that add or remove dissolved oxygen from the water column in the DWSC.

The studies were broken down into two different study efforts. The first set of studies, referred to as the "Upstream Studies", mainly focused on the riverine reach of the San Joaquin River between Highway 165 at Lander Avenue to Vernalis with additional research conducted further downstream from Vernalis to Channel Point. The second set of studies, referred to as the "Downstream Studies", mainly focused on the estuarine reach of the San Joaquin River between Mossdale to Turner Cut with additional research conducted at main stem monitoring sites located upstream of Vernalis.

An Independent Peer Review was conducted on the modeling tools developed as part of the TMDL studies. The final reports for the Upstream and Downstream Studies as well as the Peer Review Report can be found below.

Source and Linkage Studies


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--Web page updated 11/04/2014