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1. GULLY CONTROL
MEASURES
RICHA RAI (39)
NATURAL RESOURCE
MANAGEMENT

2. Introduction
What is Gully?
Gullies are the landform that are
created by running water eroding
sharply into a hillsides.
How gullies are formed?
Gullies are generally formed by an
increase in surface runoff.

3. Areas of Concern
 Reduction in cultivable land
 Increased velocity of run-off water
 Reduces storage capacity of
reservoirs and dams.
 Source:www.fao.org

4. FACTORS AFFECTING GULLY
FORMATION
 MAN-MADE FACTORS
1. Improper land use
2. Forest and grass fires
3. Overgrazing
4. Mining
5. Road construction
6. Livestock and vehicle trails
7. Destructive logging

5. Physical Factors
 Precipitation
a) Monthly distribution of rainfall
b) Rainfall intensity and run-off
c) Rapid snowmelts
 Topography
a) Shape of catchment
b) Size of catchment
c) Gradient of the slope.

6.  Soil properties
 Vegetative cover

7. Criteria for selecting control
measures
1.Gully catchment area – the larger the area
is ,the greater will be the surface runoff.
Thus more water will enter the gully which
may further make the case worst. So,
large structures are preffered to stop this
incoming water like check dams.

8. 2.The Gradient
 The steeper the slope will be the greater
will be the speed with which water will
flow, more speed of water may lead to
more erosion of soil, so those structures
should be made that can reduce the speed
of incoming water.

9. 3.Length of the gully channel
 If the length of the gully channel will be
large than with due time the speed of the
water flowing in it will get reduce, on
other hand if the length of gully will be
small the chances of erosion increases.

10. Types of Control Measures
 Mechanical: Any earthern, stone or
masonry structure constructed across the
slope.
 Vegetative: Any live bund or vegetation
established across the slope.

11. Vegetative Filter Strips
 Stripes of plant
species
 Reduces velocity of
water flow, arresting
silt.
 Adoptable in all areas
irrespective of soil
and rainfall
 Semi-permanent
vegetative measure
plantandsoil.unl.edu/.../siteIma
ges/P325LG.jpg

12. Brush wood check dams
 Driving wooden pegs
into the ground
 Intertwining brush
wood
 Adoptable in all areas
 Semi permanent
mechanical &
vegetative measure.
www.fao.org/DOCREP/006/AD
082E/images/3_3.jpg

13. Loose Boulder Check Dams
 Porous checks
 Loose boulders
 Adoptable in all
areas
 Semi permanent
mechanical
measure.
www.fao.org/DOCREP/006/AD08
2E/images/3_9.jpg

14. Percolation Tanks
 Embankments across
natural depressions in
arable, non-arable
and community lands.
 Recharges ground
water
 Permanent
mechanical measures
raigarh.nic.in/images/jal6.jpg

15. Gabion Structures
 Wire woven baskets
filled with stones
 Trap erosion debris
during heavy rains in
active gullies
 Adoptable in high slope
& heavy rainfall areas
conducting high velocity
runoff, carrying large
sediments and cutting
of banks.
 Semi permanent
mechanical measure
www.chandla.com/image/ne
w1/poto19.gif

16. Rubble Dams
 Rubble (A loose mass
of angular fragments
of rock ) obstructions.
 Adoptable in all areas
 Semi permanent
mechanical measure
www.cr.nps.gov/.../graphics/R
oosevelt1.jpg

17. CHUTE SPILLWAY
 Open channels with steep
slopes
 Consist of Inlet, vertical
curve section, steep slope
channel & outlet
 Constructed in areas of
steep slopes & sudden
drops
 Permanent mechanical
measure
statelibrary.vic.gov.au/...
/0/1/im/rw001931.jpg

18. Nala Bunds
 Earthen
embankments across
nala
 Regulates excess flow
through channel
 Adopted in low to
medium rainfall areas
 Permanent
mechanical measure
kar.nic.in/watershed/nal
a_bund.jpg

19. Drop Structure
 Dams constructed
across nala
 Excess run off passes
through weir
 Check water velocity
& permit storage
 Permanent
mechanical measure
www.ars.usda.gov/images/do
cs/5537_5721/dec2.gif

20. References
 http://www.fao.org/DOCREP/006/AD082E/
AD082e02.htm
 Information kit produced by MYRADA and
the International Institute of Rural
Reconstruction.