Hydrology Terminology

Watershed

Streamflow

Routing

Reservoirs

Channel

Precipitation

Snow

Runoff

Infiltration

Unit hydrograph

Timing

Flooding

Flow

Grade lines

Land Use

Frequency

• Infiltration is the movement of water from the surface into the soil.

• The rate of infiltration is based on a number of factors, including but not limited to:
  • soil types
  • current conditions
  • precipitation intensity

• The are many methods to estimate infiltration and/or excess precipitation. To name a few :
  • f index
  • Horton’s
  • Green-Ampt
  • SCS - curve number *
  • Continuous simulations (SAC-SMA)

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