Stream Evaluation: Physical Characteristics (CQHEI)

Describe TWO differences between a "healthy" stream and an "unhealthy" stream.

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Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

What length of stream section should you consider in your evaluation?

• 100 ft.

• 200 ft.

• 300 ft.

• 400 ft.

• 500 ft.

What is the first step in using the CQHEI to evaluate the physical parameters of a stream?

• Draw a map

• Look for fish

• Kick the substrate on the bottom of the stream

• Measure the depth of the stream

"Substrate size" describe what?

• The stuff on the bottom of the stream

• The height of the plants growing on the bank

• The width of the stream at its widest point

• The speed at which the water flows

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

"Smothering" refers to what?

• The rocks on the bottom of the stream are buried and difficult to pick up.

• There are too many plants on the edge of the stream.

• The water is flowing too fast and can't dissolve oxygen from the air.

• Harmful chemicals have been washed into the water.

How can you test for "silting" in a stream?

• Kick the bottom to see if the water gets cloudy for a long time.

• Use a chemical test that measures the amount of silt in the water.

• Look for fish that have been deformed by silt.

• Count the number of bends in the stream.

List three types of fish cover you will look for at the stream.

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When considering the shape of the stream, which of these is true?

• More bends/curves indicates a healthier habitat.

• Fewer bends/curves indicates a healthier habitat.

Tags

NGSS.MS-LS2-4

Describe TWO types of man-made changes you might see when evaluating a stream.

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Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

The "riparian area" describes the what?

• Width of the area where woody plants are growing next to the stream

• Width of the area where grassy plants are growing next to the stream

• Length of the sidewalk that runs next to the stream

• Length of the fence that runs next to the stream