Name: ______________________ Red ID: __________________ Grade: _______

1. (20%) Route the following inflow hydrograph using the linear reservoir method:

   Time (hr)	0	1	2	3	4	5	6	7	8	9	10	11	12
   Inflow (m3/s)	10	20	50	80	90	100	90	60	50	40	30	20	10

   Assume baseflow is 10 m³/s and K = 4 hr.

2. (20%) Given the following inflow hydrograph to a certain stream channel reach, calculate the outflow by the Muskingum method.

   Time (hr)	0	3	6	9	12	15	18	21	24	27	30	33	36
   Inflow (m3/s)	100	120	150	200	250	275	250	210	180	150	120	110	100

   Assume baseflow is 100 m³/s, K = 2.4 hr, and X = 0.1.

3. (60%) Please answer each question in one clear-and-concise paragraph:
   

   1. In reservoir routing, when the inflow and the outflow coincide, why is the outflow is a maximum?
   2. In reservoir routing, why is there is no lag between the start of inflow and the start of outflow?
   3. What is Seddon's contribution to hydrology? Explain.
   4. What is Hayami's contribution to hydrology? Explain.
   5. What is Cunge's contribution to hydrology? Explain.
   6. How do kinematic, diffusion, and dynamic waves differ in their attenuation properties?
   7. Why does the time-area method overestimate the flood peak?
   8. Would you use the method of cascade of linear reservoirs in an ungaged basin? Explain.
   9. Of the three storm properties, intensity, duration, and spatial coverage, which one is most important for small catchments? For midsize catchments? For large catchments?
   10. What happens to rainwater once it infiltrates into the ground? What paths may it follow?
   11. Why are worms important in hydrology?
   12. Why are cowboys important in hydrology?