IWMP-2 - Commissionerate of Rural Development Gujarat State ...

Detailed Project Report IWMP-2
Table no. 10: Flood and drought condition
Sr.
Village Flood (Incidence) Drought (Incidence)
No.
1 Ninama
2 Nana Haraniya
Rare
Every 3rd or 4th year may be drought year
3 Kotda
4 Pipaliya
Source: Official record at Grampanchayat
3.2 Edaphic factor
An edaphic factor relating to the physical or chemical composition of the soil found in a particular area. For example, very alkaline soil may be an edaphic factor
limiting the variety of plants growing in a region. Edaphic factors that influence soil organisms are derived from the development of soils and are both physical and
biological (e.g. mineral and humus content, and pH).
3.2.1 Soil erosion
Erosion is the process of weathering and transport of solids (sediment, soil, rock and other particles) in the natural environment or their source and deposits them
elsewhere. It usually occurs due to transport by wind, water, or ice; by down-slope creep of soil and other material under the force of gravity; or by living
organisms, such as burrowing animals, in the case of bio erosion. As per above mentioned Land use pattern (Table no 8), soil properties and topography (Table no
9) soil erosion is generally through water. And geographically project area is hilly so runoff of rain fall is main cause of erosion. There is no wind erosion. In the
water erosion; splash erosion impinges on 70 to 74 % of total project area by detachment and airborne movement of small soil particles caused by the impact of
raindrops on soil. Rill erosion impinges on 17 to 19 % of the total area by the development of small, ephemeral concentrated flow paths, which function as both
sediment source and sediment delivery systems for erosion. This is typically found in channels of streams and rivers. Gully erosion impinges on 9 to 11 % of the
total area; this is occurred when water flows in narrow channels during or immediately after heavy rains. There is no Ravenous in the project area.
Tillage and cropping practices, as well a land management practices, directly affect the overall soil erosion problems on a farm. Certain conservation measures can
reduce soil erosion. For example, Farm bunding, earthen dam, check wall, gully plugs, loose boulder checks may be considered.
Gujarat State Watershed Management Agency
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