The Effect of Land Use on Water Quality
Organization:St. Francis Xavier Catholic School
Grade Level:Middle School (grades 6-8, ages 11-14)
GLOBE Teacher:$user.getFullName() (inactive)
Report Type(s):International Virtual Science Symposium Report
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How does land usage affect the water quality of Rock Creek? The effect of land usage on the health of the stream was tested. The independent variable is the stream testing location.The dependent variables measured are dissolved oxygen, nitrates, pH, water temperature, conductivity, and water transparency over a period of five weeks.The controls are the day and time of testing, and how samples are collected and tested.
Results were analyzed and compared to land use using FieldScope 5.0. The results support the hypothesis stating if the testing site is changed from rural upstream, upstream wastewater treatment plant, downstream wastewater treatment plant, and downstream rural that passed through town, then the chemical parameters that indicate stream health, would be in the healthiest range upstream rural because as the water is moving downstream into the city the stream may pick up more wastes and pollutants from the land use and other merging streams as it travels through the town. A future experiment involves extending the testing process to determine to track patterns in changes of season and specifically involving weather events and resulting land use, tracking rainfall, blasting, wastewater discharge, alkalinity, and evaluating stream and watershed geology.
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