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Titre du document / Document title

Impact of small dams on agriculture and groundwater development : A case study from Pakistan

Auteur(s) / Author(s)

ASHRAF M. (1) ; KAHLOWN M. A. (1) ; ASHFAQ A. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Pakistan Council of Research in Water Resources, Khyaban-e-Johar Road H-8/1, Islamabad, PAKISTAN

Résumé / Abstract

Water resources development and management is imperative for sustainable agriculture in water scarce areas. In Pakistan, the state of Punjab has constructed 32 small dams, in the Pothwar region, to store and conserve water for agricultural production. However, little information is available on the impact of these small dams on agriculture and socio-economic conditions of the area. This study was undertaken to evaluate the impact of three small dams, Jawa, Kasala and Dhok Sanday Mar, on agriculture and groundwater development in the area and to provide guidelines for the effective utilization and sustainable management of small dams in Pakistan. Data related to on-farm practices were collected during personal interviews using a pre-tested questionnaire. Water-table depth was measured from the open wells in the area with a water-table recorder. Secondary data such as inflow, outflow, rainfall, water charges and land use were collected from small dams organization. After the construction of these dams and irrigation canals, cropping intensity and crop yield have increased. Due to availability of irrigation water there has been a shift of cropping pattern from wheat and forage crops to vegetable crops. Farmers are earning up to $2433 per ha per year. An analysis of inflow-outflow of the dams shows that, if properly managed, the storage is sufficient to irrigate all the crop lands within the command area. The depth to the water table has also decreased since the dams were constructed. The water table varies from 6 to 15 m in the irrigated areas served by the Khasala dam as compared to 7-39 m before the dam was constructed. The water table depths for the areas served by the Jawa dam ranged from 7 to 39 m before the dam was constructed to 9-25 m after construction. The shallower water table has made the groundwater accessible and as a result the number of wells has increased. This has reduced drudgery on the local inhabitants particularly for women who had to fetch water from far away for their domestic uses. The area has potential for expanding both land use and cropping intensities, if innovative irrigation and agronomic practices are adopted. Moreover, mobilizing local water user associations, proper maintenance of irrigation infrastructure and technical support of the agricultural and extension services can enhance the productivity in the area.

Revue / Journal Title

Agricultural water management    ISSN  0378-3774   CODEN AWMADF 

Source / Source

2007, vol. 92, no1-2, pp. 90-98 [9 page(s) (article)] (3/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1976) (Revue)

Mots-clés anglais / English Keywords

Agricultural hydraulics

;

Engineering

;

Hydrogeology

;

Indian Peninsula

;

Meteorological phenomenon

;

Atmospheric precipitation

;

Arid environment

;

Semi arid zone

;

Subtropical zone

;

Developing countries

;

South Asia

;

Agricultural economics

;

Water engineering

;

Asia

;

Water storage

;

Irrigation water

;

Rain

;

Irrigation

;

Socioeconomic impact

;

Water management

;

Outlet flow

;

Inlet flow

;

Water conservation

;

Sustainable agriculture

;

Pakistan

;

Impact study

;

Case study

;

Small dimension

;

Dam

;

Water resource management

;

Ground water

;

Agricultural development

;

Mots-clés français / French Keywords

Hydraulique agricole

;

Ingénierie

;

Hydrogéologie

;

Péninsule Indienne

;

Phénomène météorologique

;

Précipitation atmosphérique

;

Milieu aride

;

Zone semi aride

;

Zone subtropicale

;

Pays en développement

;

Asie du sud

;

Economie agricole

;

Aménagement hydraulique

;

Asie

;

Stockage eau

;

Eau irrigation

;

Pluie

;

Irrigation

;

Impact socioéconomique

;

Gestion eau

;

Ecoulement sortie

;

Ecoulement entrée

;

Conservation eau

;

Agriculture durable

;

Pakistan

;

Etude impact

;

Etude cas

;

Petite dimension

;

Barrage

;

Gestion ressource eau

;

Eau souterraine

;

Développement agricole

;

Mots-clés espagnols / Spanish Keywords

Hidráulica agrícola

;

Ingeniería

;

Hidrogeología

;

Península India

;

Fenómeno meteorológico

;

Precipitación atmosférica

;

Medio árido

;

Zona semiárida

;

Zona subtropical

;

Países en desarrollo

;

Asia del sur

;

Economía agricola

;

Aprovechamiento hidráulico

;

Asia

;

Almacenamiento agua

;

Agua de riego

;

Lluvia

;

Irrigación

;

Impacto socioeconómico

;

Gestión del agua

;

Flujo salida

;

Flujo entrada

;

Conservación agua

;

Agricultura sostenible

;

Pakistan

;

Estudio impacto

;

Estudio caso

;

Pequeña dimensión

;

Presa

;

Gestión recurso agua

;

Agua subterránea

;

Desarrollo agrícola

;

Localisation / Location

INIST-CNRS, Cote INIST : 15970, 35400015000707.0100

Nº notice refdoc (ud4) : 18948773



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