Farm Water Harvesting
1. Definition
Farm water harvesting refers to the process of collecting, storing, and managing rainwater,
runoff, or floodwater for agricultural use. It is a key technique in areas where rainfall is
seasonal or unreliable.
2. Objectives
Ensure a steady water supply for crops and livestock.
Reduce dependence on unpredictable rainfall.
Improve soil moisture conservation.
Mitigate effects of drought and climate variability.
Recharge groundwater and reduce erosion.
3. Methods of Farm Water Harvesting
(a) In-situ Water Harvesting (done within the farm field itself)
Contour farming – ploughing along contours to slow runoff.
Terracing – reducing slope length to trap water.
Tied ridges / furrows – small bunds in rows to capture rainfall.
Mulching – covering soil to reduce evaporation and increase infiltration.
(b) Runoff Water Harvesting (collecting water from catchments)
Ponds & pans – small reservoirs to store surface runoff.
Dams & weirs – barriers across streams to retain water.
Tanks & cisterns – storing roof or ground runoff.
Rock catchments – using natural rock surfaces to channel water into tanks.
(c) Groundwater Recharge Structures
Percolation pits and trenches – to allow water to infiltrate.
Recharge wells – directing runoff into aquifers.
, 4. Benefits
Reliable irrigation source → higher crop yields.
Reduces crop failure during dry spells.
Provides water for livestock and domestic use.
Prevents soil erosion and land degradation.
Enhances groundwater recharge.
Lowers dependence on expensive irrigation infrastructure.
5. Challenges
High initial construction costs (for dams, tanks).
Siltation of ponds and pans.
Land ownership disputes where water sources are shared.
Requires proper maintenance and management.
Variable rainfall may limit the amount of water collected.
Water Harvesting Structures
1. Definition
Water harvesting structures are physical systems built to collect, store, and conserve
rainwater or surface runoff for later use in agriculture, livestock, and domestic purposes. They
can be small (farm-level) or large (community-level).
2. Types of Water Harvesting Structures
A. Surface Storage Structures
These capture and hold runoff water above ground.
1. Farm Ponds
Small excavated depressions on farms.
Collect direct rainfall and runoff.
1. Definition
Farm water harvesting refers to the process of collecting, storing, and managing rainwater,
runoff, or floodwater for agricultural use. It is a key technique in areas where rainfall is
seasonal or unreliable.
2. Objectives
Ensure a steady water supply for crops and livestock.
Reduce dependence on unpredictable rainfall.
Improve soil moisture conservation.
Mitigate effects of drought and climate variability.
Recharge groundwater and reduce erosion.
3. Methods of Farm Water Harvesting
(a) In-situ Water Harvesting (done within the farm field itself)
Contour farming – ploughing along contours to slow runoff.
Terracing – reducing slope length to trap water.
Tied ridges / furrows – small bunds in rows to capture rainfall.
Mulching – covering soil to reduce evaporation and increase infiltration.
(b) Runoff Water Harvesting (collecting water from catchments)
Ponds & pans – small reservoirs to store surface runoff.
Dams & weirs – barriers across streams to retain water.
Tanks & cisterns – storing roof or ground runoff.
Rock catchments – using natural rock surfaces to channel water into tanks.
(c) Groundwater Recharge Structures
Percolation pits and trenches – to allow water to infiltrate.
Recharge wells – directing runoff into aquifers.
, 4. Benefits
Reliable irrigation source → higher crop yields.
Reduces crop failure during dry spells.
Provides water for livestock and domestic use.
Prevents soil erosion and land degradation.
Enhances groundwater recharge.
Lowers dependence on expensive irrigation infrastructure.
5. Challenges
High initial construction costs (for dams, tanks).
Siltation of ponds and pans.
Land ownership disputes where water sources are shared.
Requires proper maintenance and management.
Variable rainfall may limit the amount of water collected.
Water Harvesting Structures
1. Definition
Water harvesting structures are physical systems built to collect, store, and conserve
rainwater or surface runoff for later use in agriculture, livestock, and domestic purposes. They
can be small (farm-level) or large (community-level).
2. Types of Water Harvesting Structures
A. Surface Storage Structures
These capture and hold runoff water above ground.
1. Farm Ponds
Small excavated depressions on farms.
Collect direct rainfall and runoff.
