ENVIRSC 1C03 Lecture Notes - Lecture 10: Surface Runoff, Hydrosphere, Unit
31 Mar 2018
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Yearly (cid:271)asis: o(cid:374)ly a fra(cid:272)tio(cid:374) of (cid:449)ater (cid:373)o(cid:448)es arou(cid:374)d earth"s syste(cid:373) Water table = the underground depth at which the ground is totally saturated with water. 3 different types: capillary water: returns to the atm by evapotranspiration and is held in micropores, gravitational water: eventually becomes groundwater and is not retained within pores, hygroscopic water: is tightly bound to soil particles. The movement of water on land (overland and interflow) are affected by human development which creates impermeable surfaces. Diagram: the lag time after a stom event (the time it takes for precip to reach a stream after a storm) is shorter in urban settings. Also, the magnitude of the peak discharge (the max volume of water flowing in a stream at one time) is greater in urban settings. The peak discharge of a stream can exceed its max capacity, which leads to flooding. A flowing body of water with a main channel and tributaries that run into it.
