mind mapping hydrology
DESCRIPTION
Mind map on hydrology topicTRANSCRIPT
HYDROLOGY
What?
The study of water on the earth’s
surface and in the
Terms Drainage basin
What?
It is an area of land drained by a river & its tributaries
Flow diagram
A system
It is a system because it has input, output and within this system some of the water is stored in lakes, soil or passes through a
series of transfer of flows.
Rainfall –discharge relationship with
drainage basin
Water balance
precipitation
Evapotranspiration
interception
throughflow
stemflow
infiltration
percolation
Channel flow
Overland flow
Is a simple equation which describes how precipitation may be
accounted for within a drainage basin
P= Q+E+ SP: PrecipitationQ: Total stream flow/runoffE: EvapotranspirationS: Storage (soil and bedrock)
Soil moisture balance
1. Winter- PPT>EVT = soil moisture surplus, result runoff & rise river level2. Summer-PPT<EVT=human & plants utilized water from soil store-depleted & fall river level3. Autumn-PP>EVT,surplus water recharge soil until reach field capacity.
W.B. varies with time & places
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Why importance?
Varies between dev and developing (deficit and surplus)
Depends on how obtained, what it is used for,Problems it creates in terms of supply & demand.
-Storm hydrograph?-Characterisctics/terms-interpretation-Why differ-Factor control drainage basin on storm hydrograph
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