Water Yield and Control of Water Yield by Vegetation Management

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WATER YIELD AND CONTROL OF WATER YIELD BY VEGETATION MANAGEMENT:

WATER YIELD:

It is the amount of water which a stream supplies for the satisfaction of human requirements ie drinking, agriculture, hydropower production, livestock mgt, and development, etc.

Criteria for stream’s water yield for the human requirement is that water should be supplied in:

  • Quality of Discharge
  • Quality of Discharge
  • Runoff regime

NATURAL CONDITIONS OF WATER YIELD:

Naturally, stream’s water yield rarely satisfies human requirements because of:

  • Seasonal variation of rainfall (ppt)
  • Offseason flow of streams
  • Over and underflow of streams causing aridity, flood, etc
  • Where good flow it is dirty and of poor quality
  • Human misuse of catchment soil and vegetation for agriculture, wood, etc

REGULATE/ MANAGE WATER YIELD:

Picture elaborated above needs proper mgt of the catchment to regulate sustained yield of quantity and quality water to satisfy human requirements.

This urges and effort has been age-old. For this following techniques have been used by man:

  • Impressive engineering structures construction ie dams, irrigation, and channel system, groundwater well, breast retaining walls, etc but become useless prematurely due to sedimentation
  • Artificial clouding and raining
  • Soil and vegetation mgt is a key approach. Without proper mgt of soils and vegetation, one cannot improve
    • Precipitation and its distribution at the rare loss rate
    • Regulate stream flow and quality water yield
    • Improve engineering works by increasing their effectiveness and less sedimentation, flood control, reducing evaporation loss, modifying the runoff regime.

For correction and improvements please use the comments section below.




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Naeem Javid Muhammad Hassani

NJMH is working as Deputy Conservator of Forests in Balochistan Forest & Wildlife Department (BFWD). He is the CEO of Tech Urdu (techurdu.net) Forestrypedia (forestrypedia.com), Majestic Pakistan (majesticpakistan.pk), All Pak Notifications (allpaknotifications.com), Essayspedia, etc & their YouTube Channels). He is an Environmentalist, Blogger, YouTuber, Developer & Vlogger.

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