Water Supply and Scarcity

According to the United Nations, water scarcity is defined as the point at which the aggregate impact of all users impinges on the supply or quality of water. Water scarcity is a relative concept and can occur at any level of supply or demand. Scarcity may be socially-constructed or the consequence of altered supply patterns stemming from climate change. Resources available in this sub-theme include U.S. drought monitoring data, workshops for rural water supply systems, among other resources that support water supply and scarcity.

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Water Supply and Scarcity Resources

Investment Criteria and Mathematical Modelling Techniques for Water Resources Planning in Argentina, the MIT - Argentina Project

Published: 
January 1, 1973
U.S. Agency for International Development
The objective of this paper is to describe a research program at MIT (USA) for the application of modern investment criteria and mathematical modeling techniques for water resources planning in Argentina. The project lasted for two years and had three principal objectives: (1) to adapt modern water...Read more
Regional focus: 
ArgentinaLatin America and the Caribbean

Groundwater Extraction and the Water Balance

Published: 
January 1, 1973
U.S. Agency for International Development
This report looks at groundwater extraction and the water balance. Groundwater extraction and net use are related to groundwater depletion and the water balance. Potential evapotranspiration, actual crop or vegetative evapotranspiration, dependability of precipitation, moisture deficits and...Read more
Regional focus: 
Latin America and the Caribbean

Water Management in Arid and Sub-Humid Lands of Less Developed Countries; Annual Progress Report, 1972/1973

Published: 
January 1, 1973
U.S. Agency for International Development
The general objective of this research is to increase food production in the arid and sub-humid lands of the less developed countries through the improvement of water management practices and the integration of those with other good management practices in the semi-arid lands of the Latin American...Read more
Regional focus: 
Latin America and the Caribbean

Manual on Water Desalination: Technology - Suppl. No. 1

Published: 
October 1, 1972
U.S. Agency for International Development
THIS SUPPLEMENT PRESENTS NEW REFINEMENTS AND COMMERCIAL APPLICATIONS OF DESALINATION PROCESSES COVERED IN VOLUME 1 OF THE DESALINATION MANUAL. IT UPDATES TECHNICAL GUIDES, DESCRIBES TYPICAL PLANTS BUILT SINCE 1967, AND PROVIDES A SECTION OF CONCEPTUAL PLANT DESIGNS. THIS DOCUMENT REQUIRES REFERENCE...Read more

Manual on Water Desalination: Economics - Suppl. No. 1

Published: 
October 1, 1972
U.S. Agency for International Development
THIS SUPPLEMENT TO VOLUME II (ECONOMIC ASPECTS OF DESALINATION) OF THE DESALINATION MANUAL UPDATES THE MATERIAL OF THAT VOLUME AND REQUIRES REFERENCE TO IT TO BE OF USE. IT PROVIDES NEW GUIDELINES FOR ENVIRONMENTAL CONSIDERATIONS AND ADVANCEMENTS IN DESALTING TECHNOLOGY (ESPECIALLY REVERSE OSMOSIS...Read more

Irrigation Requirements and Water Balance, Arenal Proposed Project, Costa Rica

Published: 
June 1, 1972
U.S. Agency for International Development
ICE has completed a preliminary study for the construction of a dam and reservoir on the Rio Arenal. The principal purpose is the production of electrical energy. Construction of this power facility will make available an adequate supply of irrigation for a large area of agricultural lands in...Read more
Regional focus: 
Costa RicaLatin America and the Caribbean

Needs and Requirements for Irrigation, Comayagua and Vicinity, Honduras

Published: 
June 1, 1972
U.S. Agency for International Development
The valley areas in the vicinity of Comayagua and Siuatepeque offer considerable potential for agricultural development. Irrigation facilities have been constructed capable of delivering irrigation water to areas for more extensive than those currently irrigated. An analysis is made of the adequacy...Read more
Regional focus: 
HondurasLatin America and the Caribbean

Two Theoretical Models of Radiation Heat Transfer Between Forest Trees and Snowpacks

Published: 
May 17, 1972
U.S. Agency for International Development
Two simple theoretical models describe the effect of forest cover on radiation transfer to a snowpack: Model 1, which describes the effect of varying canopy closure on the net radiation received by an interior snowpack, suggests that the net radiation may increase or decrease monotonically as the...Read more

Economics of Hydrologic Modelling

Published: 
May 1, 1972
U.S. Agency for International Development
The proliferation of hydrologic models suggests either a situation where-in hydrologists are homing onto the true model or a situation wherein hydrologists are uncertain about the appropriate model. The latter seems more likely in the face of constraints on data availability, budgets, time,...Read more

Estimation of Irrigation Requirement for Venezuela

Published: 
January 1, 1972
U.S. Agency for International Development
Christiansen's formula was used to compute evaporation and potential evapotranspiration using 1013 months of data from 19 stations in Venezuela. Thirteen probability levels of precipitation were determined for each station. Potential irrigation requirements for 16 stations were computed based...Read more
Regional focus: 
Latin America and the Caribbean

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