Fish Kill

Scenario 1

• Water temperature: not even throughout, changes often
• pH: basic
• Lead amounts vary (heavy metal ion)
• Small amounts of pesticide during the summer months
• High rainfall in the first few days of September
• Pesticides decrease as fall comes

Scenario 2

• pH: basic
• Water temperature: varies a lot (highest is 27'C; lowest is 0.5'C)
• High rainfall for September compared to spring or the first year
• Again in September, a huge spike in organic carbon
• During spring, high amounts of lead
• Huge nitrate spike in September but at the end it decreases
• Orthophosphate is high in September
• Water temperature decreased during September as did rainfall

Results
In scenario 1, the results contrasted from those of scenario 2. For the first situation, there was a huge amount of rainfall and a high amount of pesticides. The pressure of the rainfall pushed the pesticides into the river, killing the fish. In scenario 2, there was a high amount of rainfall in September and a high amount of nitrate. As a result, the rainwater washed the nitrate from the soil into the river, which served as a death sentence for the fish.