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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Community management of water resources in the southern region, Adelaide /

Hale, Angela. January 1997 (has links) (PDF)
Thesis (M.Env.St.)--University of Adelaide, Mawson Centre for Environmental Studies, 1998. / Bibliography: leaves 153-168.
2

Management of water resources under different socio-economic conditions

Bokhari, Syed Manzoor Hussain, January 1975 (has links) (PDF)
Thesis (Ph. D. - Arid Lands Resources)--University of Arizona. / Includes bibliographical references.
3

An evaluation of environmental problems associated with local decision-making a case study of Marshall landfill, Boulder, Colorado /

Evans, Elisabeth, January 1983 (has links) (PDF)
Thesis (M.S. - Water Resources Administration)--University of Arizona, 1983. / Bibliography: leaves 68-70.
4

Water resources management for part of the lower Gila valley

Matias Filho, Jose, January 1974 (has links) (PDF)
Thesis (Ph. D. - Watershed Management)--University of Arizona. / Includes bibliographical references.
5

Economic efficiency and distributive consequences of interbasin water transfers : a framework for analysis

Beattie, Bruce R. 11 July 1969 (has links)
If informed and rational judgments are to be made concerning proposed large scale interbasin water diversions, it is imperative that competent positive analysis be undertaken by scientists of relevant disciplines. It is the primary purpose of this thesis to pull together into a single interrelated package, the economic theory needed to establish a framework for analyzing the economic efficiency and distributive impacts of interbasin water transfers. Accordingly, a model is developed such that efficiency implications of resource transfer schemes can be ascertained; the components of the model are identified so that direct regional income redistributive effects might be determined. The model is then extended to consider value in transit, intrafirm production interdependencies, interfirm production interdependencies, and indirect benefits and costs. Finally, a method is demonstrated for estimating one component of the efficiency model. The marginal value productivity of water in irrigated agriculture is estimated from secondary data sources using least-squares regression analysis. / Graduation date: 1970
6

Numerical simulation and optimisation studies of groundwater in northern Nigeria

Agbede, O. A. January 1985 (has links)
No description available.
7

The applicability of linear programming to resource allocation in an irrigated agriculture with special reference to the Punjab of Pakistan

Rehman, Tahir Ur January 1972 (has links)
No description available.
8

Development of a decision support system for a multipurpose reservoir

Onanda, Michael Robert January 1992 (has links)
No description available.
9

An investigation of integrated management of irrigation systems for agriculture and aquaculture

Li, Qionfang January 2002 (has links)
No description available.
10

Exploratory groundwater modelling in data-scarce environments : the shallow aquifer of river Yobe basin, north east Nigeria

Hassan, Muhammad January 2002 (has links)
This thesis addresses the issues of modelling a groundwater system in a data-scarce environment, the Yobe river basin, north east Nigeria. Despite significant investment in the past towards water resources developments, basic data on groundwater resources are limited. Short-term studies by Consultants contain some weaknesses and have not fully investigated the mechanisms of flow to and from the aquifer. Fieldwork studies conducted during this work and in the past (Alkali, 1995) showed that the shallow aquifer system is hydrogeologically complex. Concerns such as the relative magnitudes of recharge mechanisms to the aquifer, hydrologic conditions of the aquifer, a large change in river stage, presence of unconfined 'windows' for vertical recharge, and the fact that the region is located in a semi-arid region need to be addressed. This increased the concerns for the need to explore the system through modelling. Modeling can give insights into the whole system behaviour which other approaches cannot provide. Therefore modelling was carried out and it has provided valuable insights into the complex system. This thesis reports on the procedure of developing a groundwater model that is basic and exploratory based on limited data. Detailed conceptual model was developed using data from previous workers and from a fieldwork undertaken in this study. The conceptual model provided key hydrogeological information on the various physical processes and how they interact with the shallow Fadama alluvial aquifer. It describes the aquifer as around 10 m thick and about 4 km wide with the river partially penetrating it. The aquifer consists of areas that are confined and some that are unconfined. The river is ephemeral and its stage changes rapidly over 4 m. Recharge mechanisms to the aquifer consist of vertical recharge from rainfall and overland flooding through permeable topsoil, river to aquifer flow and 'leakage' through low permeability cover. The conceptual model was idealized and translated into a computational groundwater model using MODFLOW. The model investigated the role of each components of flow in determining the overall water balance of the system. The relationship between river stage and river coefficient in the study of river-aquifer interaction was investigated. Finally the response of the aquifer system to pumping was explored. Groundwater head output from the model was used in the calculation of the various flow components. The main findings and conclusions of the work are that: (i) a comprehensive conceptual model is fundamental in developing a numerical groundwater model; (ii) the exploratory model developed using limited data is plausible because it is hydrologically credible and fits the available data; (iii) the water balance shows that the river to aquifer flow dominates the recharge from rainfall and overland flooding. Contrary to initial belief, the largest river to aquifer flow occurs before the river reaches its peak; (iv) flows between river and aquifer are insensitive to variation of river coefficient with river stage. The limiting factor in the exchange of water between them is the hydraulic gradient and the transmissivity of the aquifer; (v) in representing the river with a constant river coefficient, the coefficient has a threshold value above which the river-aquifer interaction does not change significantly; (vi) over-pumping of the aquifer will decrease river flow to disadvantage of downstream users; (vii) the replenishment of the aquifer can be improved by pumping it at a modest rate.

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