From the USGS:
One of the primary ways of determining the health of an aquatic ecosystem is to understand its hydrodynamics, that is the movement of water and impact it has on the environment, including the food web. This allows water managers to make better decisions affecting the preservation of natural resources.
An area of interest in this effort has been the Sacramento River Deep Water Ship Channel, a terminal channel known to support native fish populations, where conditions may be favorable to enhance primary production of phytoplankton.
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