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Water - Content (The drainage basin (Water table (The level of water in…

- - - - The hydrological cycle is a closed cycle because nothing is lost or gained, the water is at a constant level circulated through stores, powered by solar energy, water on surface evaporates into atmosphere, water is drawn from soil and plants (evapotranspiration), condensation occurs when air rises forming clouds, leading to precipitation returning water to surface, gravitational energy converted back into kinetic, examples of stores: groundwater, ice, oceans, lakes
- - - - larger river, larger catchment, many tributaries which can cause a regime to be complex
    - - reflected by seasonal changes
    - - more evaporation in summer
    - - overlying soils, permeability and porosity, water held in permeable groundwater rocks its gradually released into river
    - - dam building, flow regs, management
    - - amount and type
- - - - Influences amount of precipitation and type of vegetation
    - - Determine infiltration and throughflow
    - - Impacts percolation and groundwater flow
    - - Amount of precipitation and runoff
    - - impacts interception, infiltration, overland flow and transpiirtation
  - - - Storage reservoirs hold back river flows, domestic abstraction reduces river flows, groundwater abstraction for irrigation lowers water tables
    - - Reduces evapotranspiration but increases infiltration and runoff
    - - Compaction of soul by livestock increases overland flow, ploughing increases infiltration and runoff
    - - urban surfaces increase runoff by reducing percolation and infiltration
    - - Introduction of silver iodide pellets or ammonium nitrate to attract water droplets to increase rainfall in areas of drought