1. A short discussion of: Where does water go when it rains?

2. Catchment hydrology within a traditional civil engineering context
Slide, Gordon Grant

3. What we are all taught in Hydrology 101
Quick Flow,
Assumed to be
precipitation
Slow Flow— Assumed to be
Groundwater/interflow
From Linsley, R.K., M.A. Kohler, and J.L.H. Paulhus, 1975.
Hydrology for Engineers, 2nd Ed., McGraw-Hill, New York, 482 pp.

4. What we usually examine…
Runoff (L/s)
Time (Day of Year)

5. Stable isotopes of water a different type of information…
Particle transport through a catchment

6. Catchment hydrology’s biggest finding in the past 20 years
Hillslopes store water for months to years and then release
it in minutes or hours to streams (Kirchner, 2003 HP)

7. What field data are showing

9. Where models are going…