1. Describe three factors that control how much water is flowing in a river. The rate of precipitation, the source of water (snow on mountains), and slope of the river. 2. List the factors that produced the different flow conditions. Rillito Creek, Arizona- An increase in precipitation. Mississippi and Wisconsin Rivers- result of global climate change. Colorado River, Glen Canyon Dam- an increase in precipitation. 3. What do the spikes in the graph indicate?
A big increase in the measured discharge (cfs)
4. List the date and amount of discharge for the two highest peaks on the graph. August 10th 1976- 3 cfs, and August 16th 1976- 1 cfs.
5. What do the spikes in the graph indicate?
An increased amount in precipitation.
6. List the date and amount of precipitation for the two highest peaks on the graph. August 9th 1976- 34-35 mm, and August 14-15th – 25-28 mm. 7. Record the amount and dates of the five discharge spikes and amount and dates of the seven precipitation spikes. What do you notice about the timing of the peaks of discharge and rainfall? Precipitation spikes: August of 1976: 1st= 15-18mm, 4th-7th = 11mm, 8th -11th= 34/35 mm, 12th-13th=1/2 mm, 14th-16th= 25/28 mm, 26th -28th= 15 mm, 28th-30th= 5/7. Discharge spikes: August of 1976:
8. What do you notice about the timing of the peaks of discharge and temperature variation starting in March? What do you conclude from this relationship? What other data might you need to confirm your hypothesis?
9. What do you notice about the timing of the peaks of discharge and rainfall? What do you conclude from this relationship? 10. What relationship exists between temperature and discharge? What do you conclude from this relationship? 11. What do you think is responsible for the regular shape of the discharge peaks? Speculate on the cause of the major discharge peak at the end of March. 12. Write a summary describing the factors that affected the discharge of Hubbard Brook in February, 2000. Refer...
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