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The Runoff Effect
W e wanted to find out how mountain runoff and orchard runoff differ. We thought the stream water would have the best water quality because it came from mountain runoff and looked clean. We thought the water quality of Dry Lake would be poor because it looked dirtier and the runoff was from the orchards.
Megan: We went to three different sites to test water. The first site was Lake Chelan because it is the main lake and the water department regularly tests it for water quality. The second site was Dry Lake which is a smaller lake that gets agricultural runoff. The third site was Veroske Creek, it gets its water from the mountains
Remedios: We used the rag doll method to grow our test plants. We took a sheet of wax paper and laid it flat on the table and placed the bean seeds on the paper and placed paper towels on top of them and wrapped the whole thing up and put it in a cup and kept it moist. After one week, we transplanted the plants to buckets. We watered different groups of plants with water from the three sites and measured plant height at the end of several weeks.
Antonia: We also tested the water chemistry. We used Hatch testing kits to test for Dissolved Oxygen (DO), pH, and C02
Turbidity: measures the sediments in the water.
Hardness: measures the minerals in the water.
pH: tests for acidic conditions.
Dissolved Oxygen: tests for dissolved oxygen in the water.
Ammonium Nitrogen: tests for sewage in the water.
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"Rural Girls in Science" is a program of the Northwest Center for Research on Women