CIV E 445-APPLIED HYDROLOGY
FALL 2016
FIRST MIDTERM
FRIDAY, SEPTEMBER 30, 2016, 1400-1450
Name: ______________________ Red ID: _________________ Grade: _______
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Instructions: Closed book, closed notes. Use engineering paper.
When you are finished, staple your work in sequence (1 to 3),
and return this sheet with your work.
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- (30%) A 185-km2 basin has 625 mm of mean annual precipitation,
and the mean annual outflow is 1.2 m3 s-1.
What percentage of precipitation is abstracted by the catchment
on a mean annual basis?
- (30%) Fit a Horton infiltration formula to the following measurements:
f = fc + ( fo - fc ) e -kt
Time
(hr) | f
(mm/hr) |
| 1 | 2.5 |
| 2 | 1.5 |
| infinity | 0.7 |
- (40%) Please answer questions in a brief statement.
- What are the four types of mathematical models used in hydrology?
- How did Dalton contribute to evaporation modeling? How did Penman contribute to evaporation modeling?
- What is albedo? What is the albedo of a rain forest such as the Amazon? What is the albedo of a desert such as the Sahara?
- What is the difference between potential and actual evapotranspiration?
- What are the typical upper and lower limits for stream slopes in nature?
- What is a lysimeter? Why is it difficult to built a correct lysimeter?
- What is baseflow? Where does it come from?
- What is the main advantage of the Pfasfstetter topology for catchment ordering?
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