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Introduction How Rivers Run Stories Value Of A River What We Can Do
Quality of a River - Water Quality
Dissolved oxygen story (pg 4 of 4)

Runoff of fertilizer, agricultural waste, and other nitrogen-rich organics-primarily from the ditched and tiled farm fields of the upper Midwest-have created an oxygen-starved plume known as the "Dead Zone" covering from 2,000 to more than 6,000 square miles in the Gulf of Mexico.

To learn about the large scale consequences of this ecological suffocation, read the story in From Farmer to Shrimper: The Dead Zone.


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Introduction
Flow
Shape
Connections
Quality
Description
Temperature
Oxygen
Alkalinity
Nutrients
Sediment
Contaminants
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Life
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