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A developer proposes to build a large apartment complex next to the Cedar River. What are the likely effects on the health of the river if the project.

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Presentation on theme: "A developer proposes to build a large apartment complex next to the Cedar River. What are the likely effects on the health of the river if the project."— Presentation transcript:

1 A developer proposes to build a large apartment complex next to the Cedar River. What are the likely effects on the health of the river if the project is built? Consider the likely water quality/habitat impacts from a proposed construction project at our study site (Rotary Park). How would YOUR proposal affect water quality/habitat?

2 Clearing (removing trees/shrubs) and grading of the construction site will result in soil erosion, leading to increased turbidity and total solids.

3 Soil naturally contains nitrates/phosphates. When soil/sediments wash into the river this adds to nitrate/phosphate levels in the water and can result in increased algal growth. Too much algae can result in low DO levels as they die and decompose. BOD increases.

4 Loss of shade (from removal of streamside trees & shrubs) will result in increased water temps & lower DO levels.

5 The Cedar River?! The finished Project… Just Beautiful!

6 Oil & gas and toxic metals (from cars) from parking lots will pollute water through runoff. Once the Apartments are built…

7 Phosphate & nitrate levels will increase due to use of fertilizers on grass/landscaping, resulting in increased algal growth & lower DO.

8 Pesticides & herbicides used on grass/landscaping could enter river through runoff and harm aquatic plants and BMIs.

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