Identification of Suitable Sites for Artificial Groundwater Recharge Structures in Semi-arid region of Anantapur District: AHP Approach

The conservation and sustainable advancement of soil and water assets is one of the fundamental standards for improvement of arid and semi-arid regions of India. The present study is underway to evaluate the Artificial Groundwater Recharge Zones (AGRZ) in the semi-arid region of Anantapur district, Andhra Pradesh, India using Remote Sensing (RS), Geographical Information System (GIS) and Analytical Hierarchy Process (AHP) technique. The comparative weights were assigned to different thematic layers with the help of the decision making tool of AHP. A set of eight thematic layers influence groundwater potential (GWP) is determined based on their corresponding weights, which depend on a Saaty’s 9 points scale. These weights are normalized using AHP technique to identify the AGRZs. Five AGRZs were recognized as very low, low, moderate, good and very good, depending on its suitability to identify the sites for groundwater recharge. About 4.29 % (8.96km2) and 17.70 % (36.95km2) area in the region show very good and good potentials of artificial groundwater recharge, respectively. On the other hand 61.59% (128.60km2), 11.94% (24.94km2) and 4.48 % (9.35km2) area showed moderate, poor and very poor potentials. Overall accuracy of AGRZ map is 82.05%. 92 check dams, 19 percolation tanks and 7 check walls were found suitable in the region. The effectiveness and prediction ability of the method depends on integrity of the criterion used. AHP based methodology can be useful for precise and reliable analysis and predictions of groundwater in semi-arid regions of India.

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Identification of Potential Groundwater Recharge Sites in a Semi-arid Region of Pakistan Using Saaty’s Analytical Hierarchical Process (AHP)

Geomatics and Environmental Engineering ◽

10.7494/geom.2022.16.1.53 ◽

2021 ◽

Vol 16 (1) ◽

pp. 53-70

Author(s):

Muhammad Suliman ◽

Samiullah Samiullah ◽

Muhammad Ali

Keyword(s):

Arid Region ◽

Groundwater Resources ◽

Drainage Density ◽

Groundwater Potential ◽

Geographical Information ◽

Arid Environments ◽

Analytical Hierarchical Process ◽

Gis And Remote Sensing ◽

Semi Arid Region ◽

Semi Arid

Groundwater is a precious source of fresh water and a major component of the entire water supply. Both water quality and quantity could be satisfied by evaluating the groundwater potential sites (GWPS). This paper analyzes the ground-water potentials in a semi-arid region of Khyber Pakhtunkhwa, Pakistan. It describes a standard methodology to identify and map GWPS using integrated Geographical Information System (GIS) and remote sensing (RS) methods. Eight parameters including elevation, slope, drainage density, lineaments density, soil, geology, land use/land cover and rainfall were integrated to explore areas with groundwater holding capability. GWPS were delineated through subjective weights assigned after coupling various thematic layers using Saaty’s Analytical Hierarchical Process (AHP). The modelled GWPS were cross-checked with tube wells data. The result indicates that the central part of the study area has good potential for groundwater reserves/exploitation, where the factors i.e. moderate to high drainage density, sedimentary sequence of alluvial plain, low elevation etc. discern the central portion of the study area as a suitable site for groundwater. This study suggests that the applied method proves to be very significant and reliable tool for timely assessment of quality assured evaluation of groundwater resources. This study could be a systematic guide for future investigations for water related explorations, especially in semi-arid environments.

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Identification of Artificial Groundwater Recharge Zones in Semi-arid region of Southern India using Geospatial and Integrated Decision-Making Approaches

Environmental Challenges ◽

10.1016/j.envc.2021.100278 ◽

2021 ◽

pp. 100278

Author(s):

M. Rajasekhar ◽

K Ajaykumar ◽

Raju G Sudarsana ◽

Vijay Bhagat

Keyword(s):

Decision Making ◽

Groundwater Recharge ◽

Arid Region ◽

Southern India ◽

Artificial Groundwater Recharge ◽

Integrated Decision Making ◽

Semi Arid Region ◽

Semi Arid

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Effects of Genotype and Rainfall on Forage Oats in a Semi-arid Region

Experimental Agriculture ◽

10.1017/s0014479700007936 ◽

1977 ◽

Vol 13 (3) ◽

pp. 217-223 ◽

Cited By ~ 5

Author(s):

A. Hadjichristodoulou

Keyword(s):

Arid Region ◽

Selection Criteria ◽

Crude Protein ◽

Dry Matter ◽

Arid Regions ◽

Correlation Coefficients ◽

Annual Rainfall ◽

Varietal Response ◽

Semi Arid Region ◽

Semi Arid

SUMMARYThere were significant differences in dry matter yield among five forage oat varieties tested at ten environments during 1970–75. The correlation coefficients between annual rainfall and DM yield varied with variety from 0·69 to 0·88, late varieties tending to give higher yields. Lateness, and high varietal response to annual rainfall and improved environmental conditions, can be used as selection criteria in semi-arid regions. Late varieties had higher DM and lower crude protein contents, and forage produced under lower rainfall conditions tended to have more DM and crude protein.

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