groundwater storage surface storage channel storage evaporation and transpiration infiltration...

groundwater storage

Surface storage

channel storage

evaporation and transpiration

infiltration

throughflow

streamflow

overland flow

soil water storage

percolation

precipitation

groundwater flow

Or ‘channel runoff’

Interception

(stored in plants)

Tyne drainage basin

watershed

Watershed - the boundary separating one drainage basin from another.

or catchment area

Constructing a watershed

The watershed defines the boundary of the catchment area.

Drainage Basin1

Drainage Basin1

Drainage Basin2

Drainage Basin

3

Drainage basins interlock…

transpiration

infiltration

channel runoff

overland flow

precipitation

evaporation

Water table

The Tay-Earn basin

River Tay and River Earn catchments, Perthshire, Scotland

River Earn drainage basin

Lunan drainage basin

Firth of Tay

Lunan Burn gauging station

Firth of Tay

The Tay-Earn basin

River Tay and River Earn catchments, Perthshire, Scotland

River Tay video

Things to think about!

What a drainage basin is like.

The impact of flood events on human activity.

The changing landscape from source to mouth.

Why what a river does is important to us.