Dissolved Oxygen Depletion in the Stockton Deep Water Ship Channel: Physical and Chemical Processes Conceptual Model

Current location:   Home  >  Physical Processes Model  >  Reach 3  >  Primary Driver—Imported Dissolved Oxygen

Home page About These Models Site map Comment or contribute Biological and ecological effects model main page How to use this model Basic Concepts  Aconyms list (opens in a new window) References cited Download printable text for each species Links to other resources TMDL working group home page Additional information about affected fish species Other conceptual models Physical and chemical processes conceptual model main page

Reach 3: Primary Driver—Imported Dissolved Oxygen

DO concentrations in Reach 2 entering Reach 3 are generally at or above saturation levels, based on DO concentrations measured at Mossdale, even at low summer flows, suggesting that reaeration and algal photosynthesis are dominant processes in Reach 2 (Data Atlas 2006) (Kratzer et al. 2004). The figure below shows the DO concentrations measured at the California Department of Water Resources monitoring station at Mossdale, midway along Reach 2, during 2001. These DO values were at or above saturation for nearly the entire year (Jones & Stokes 2002a). As flow continues downstream, DO concentrations may decrease, but DO is generally observed to be near saturation at Channel Point during ebb tide (i.e., downstream flow).

DO in the San Joaquin River at Mossdale in 2003

Jump to "Imported Dissolved Oxygen" discussion under: Reach 1 | Reach 2
Jump to Reach 3 Main Page