Productivity and Efficiency

According to the U.S. Environmental Protection Agency, water efficiency is the smart use of our water resources through water-saving technologies and simple steps. Using water efficiently will help ensure reliable water supplies today and for future generations. Topics addressed in this theme provide insights, lessons, and guidance on how diverse stakeholders are working to improve water management and reduce water use.

Productivity and Efficiency Resources

Water Optimizer

Published: 
January 1, 2013
Developed by UNL faculty and DWFI faculty fellows, the Water Optimizer is a suite of programs to predict the profit maximizing cropping strategy and corresponding amount of applied irrigation when water supplies are limited.Read more

Trophic Models of Aquatic Ecosystems

Published: 
January 1, 1993
U.S. Agency for International Development
An improved version ofJ.J. Polovina's ECOPATH program for the construction of steady-state multispecies ecosystem models from fisheries data is presented. This new version, called"ECOPATH II,"differs from the original, aside from being more user-friendly, in a number of important...Read more

Feasibility Studies and Evaluation of Irrigation Projects: Procedures for Analyzing Alternative Water Distribution Systems in Egypt

Published: 
July 1, 1982
U.S. Agency for International Development
A host of opportunities is currently available for rebuilding Egypt's existing irrigation system and developing new systems. This report outlines a methodology for comparing various irrigation water distribution systems prior to implementing an irrigation program. Following a brief discussion...Read more
Regional focus: 
Egypt, Arab Rep.Middle East and North Africa

Constructing a Biogas System

Published: 
January 1, 1982
U.S. Agency for International Development
This technical note describes how to construct a biogas system. A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. The system consists of one or more digester tanks, a gas holder, an arrangement of gas pipes, and one...Read more

Designing a Biogas System

Published: 
January 1, 1982
U.S. Agency for International Development
This technical note describes how to design a biogas system. A biogas system is a means of digesting animal manure anaerobically to produce methane gas which is burned to provide heat or light. The system consists of one or more digester tanks, a gas holder, an arrangement of gas pipes, and one or...Read more

Design, Operation and Economics of a Small-Scale Hatchery for the Larval Rearing of Fugpo, Penaeus Monodon Fab.

Published: 
July 1, 1978
U.S. Agency for International Development
The economic importance of the Penaeus Monodon Fabricus (sugpo, prawn) cannot be overemphasized. This is evidenced by the interest shown by aquaculturists in Southeast Asia in the mass culture of this species. One of the major problems in the mass production of sugpo is how to obtain a constant...Read more
Regional focus: 
South East Asia

Fish Pond Site Selection, Mid-Western State, Nigeria

Published: 
July 19, 1974
U.S. Agency for International Development
Fish ponds must be in area of impervious, or relatively impervious soils. Technicians visited a number of sites in Nigeria to provide insight into site selection. To be very effective, fish ponds should be at such an elevation that they may be completely drained in order to effect total harvest,...Read more
Regional focus: 
NigeriaSub-Saharan Africa

HydroDesktop

Consortium of Universities for the Advancement of Hydrologic Science, Inc.
HydroDesktop is a free and open source GIS enabled desktop application that helps you search for, download, visualize, and analyze hydrologic and climate data registered with the CUAHSI Hydrologic Information System. HydroDesktop is a free software tool for finding time series of water and climate...Read more

Hydropower Energy and Economic Analysis Tool

Published: 
September 1, 2011
U.S. Department of the Interior | Bureau of Reclamation
This is an “open source” software tool developed by the Bureau of Reclamation (Reclamation) and the contractor Anderson Engineering for the Hydropower Resource Assessment at Existing Reclamation Facilities Report , and it has been made available for public use. This tool is a model that allows...Read more
Regional focus: 
United States

Water Prism, Volume 2: Prototype Applications

Published: 
January 1, 2013
Electric Power Research Institute
Water Prism is a decision support system (DSS) that evaluates alternative management plans to obtain water resource sustainability at the regional, watershed, or local levels. It considers surface, ground, and impoundment waters and all water-using sectors (industrial, agricultural, municipal,...Read more

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