Hydrology Terminology

Watershed

Streamflow

Routing

Reservoirs

Channel

Precipitation

Snow

Runoff

Infiltration

Unit hydrograph

Timing

Flooding

Flow

-quantity

-timing

-velocity

-”wave” speed

Grade lines

Land Use

Frequency

• The velocity of the flow is based on the slope of the stream bottom. The greater the slope the greater the potential velocity of the flow.

• The “wave” speed is the velocity of the flood wave down the channel. The speed of this wave affects how quickly the downstream area will effected.

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