Question

How does surface runoff affect the dissolved oxygen content in any water body?

Answer 1

Explanation:

Adequate dissolved oxygen is necessary for good water quality. ... As dissolved oxygen levels in water drop below 5.0 mg/l, aquatic life is put under stress. The lower the concentration, the greater the stress. Oxygen levels that remain below 1-2 mg/l for a few hours can result in large fish kills.

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Answer 2

Answer:

Adequate dissolved oxygen is necessary for good water quality. ... As dissolved oxygen levels in water drop below 5.0 mg/l, aquatic life is put under stress. The lower the concentration, the greater the stress. Oxygen levels that remain below 1-2 mg/l for a few hours can result in large fish kills.