Student Research Reports
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How does Rainfall Affect Dissolved Oxygen Levels?
Organization(s):Ottawa Hills Jr/Sr High School
Country:United States of America
Student(s):Roz Dougherty and Camille Weaver
Grade Level:Secondary School (grades 9-12, ages 14-18)
Educator(s):Gloria Kreischer Gajewicz
Contributors:Sara Mierzwiak - University of Toledo, Ohio/GLOBE Mission EARTH and Dr. Gloria Kreischer Gajewicz
Report Type(s):International Virtual Science Symposium Report, Mission Earth Report
Protocols:Dissolved Oxygen, Water Temperature
Presentation Poster:
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Language(s):English
Date Submitted:03/05/2025
In this project, we performed a series of tests to find answers to our research question, how does rainfall affect dissolved oxygen levels. We began by creating a hypothesis which is, if precipitation levels increase then dissolved oxygen levels will also increase because rainwater absorbs oxygen from the atmosphere as it falls, therefore adding more oxygen to the water when it mixes in. Then, we recorded the amount of rainfall before collecting water samples and measuring its dissolved oxygen. Finally, we added our data into multiple different types of graphs, bar graphs and lines graphs, and then analyzed the data and results. We came to the conclusion that our hypothesis was indeed correct as our data showed a positive correlation, as the precipitation levels increased, so did the dissolved oxygen levels.