Quantifying available water supply in rural Mali based on data collected by and from women

2013 ◽  
Vol 60 ◽  
pp. 43-52 ◽  
Author(s):  
Cara Shonsey ◽  
John Gierke
Keyword(s):  
Water Supply ◽  
Available Water

Spatial and Temporal Water Allocation in the Kissimmee River Basin

1977 ◽  
Vol 9 (1) ◽  
pp. 107-113 ◽  
Author(s):  
John E. Reynolds ◽  
J. Richard Conner
Keyword(s):  
Water Management ◽  
Water Supply ◽  
River Basin ◽  
Water Allocation ◽  
Cooperative Effort ◽  
The Public ◽  
Available Water ◽  
Kissimmee River ◽  
Strong Competition ◽  
Southern Florida

In many areas of the country, there is strong competition among agricultural, municipal, industrial and other users of water. Water managers are faced with the problem of allocating available water among alternative uses.The study [11] upon which this paper is based was a cooperative effort with the Central and Southern Florida Control District which is typical of many water management districts making decisions regarding allocation of a limited amount of water among uses and users. When the District was formed, it was developed with emphasis on facilities to provide relief from flooding. Water management responsibilities such as water supply, recreation and the preservation and enhancement of fish and wildlife have become important to the public and consequently have received recognition by those responsible for managing the water.

Water-Stressed Pakistan

Asian Survey ◽  
2019 ◽  
Vol 59 (6) ◽  
pp. 1116-1136
Author(s):  
Amit Ranjan
Keyword(s):  
Water Supply ◽  
Supply And Demand ◽  
Agriculture Sector ◽  
Available Water ◽  
Water Supply And Demand

The widening gap between water supply and demand is the biggest threat and challenge before Pakistan. Of the available water, much is polluted. Both scarcity and pollution threaten the agriculture sector, on which the country’s economy depends.

scholarly journals Calculation of available water supply in crop root zone and the water balance of crops

2015 ◽  
Vol 45 (4) ◽  
pp. 285-298 ◽  
Author(s):  
Jan Haberle ◽  
Pavel Svoboda
Keyword(s):  
Water Balance ◽  
Water Supply ◽  
Soil Water ◽  
Root Zone ◽  
Potential Evapotranspiration ◽  
Pedotransfer Functions ◽  
Soil Water Retention ◽  
Available Water ◽  
Available Water Content ◽  
Access To Data

Abstract Determination of the water supply available in soils for crops is important for both the calculation of water balance and the prediction of water stress. An approach to calculations of available water content in layers of the root zone, depletion of water during growth, and water balance, with limited access to data on farms, is presented. Soil water retention was calculated with simple pedotransfer functions from the texture of soil layers, root depth, and depletion function were derived from observed data; and the potential evapotranspiration was calculated from the temperature. A comparison of the calculated and experimental soil water contents showed a reasonable fit.

MAGNITUDE AND ECONOMICS OF FERTILIZER NITROGEN RESPONSE OF WHEAT IN RELATION TO AMOUNT AND TIMING OF WATER INPUTS

2002 ◽  
Vol 38 (1) ◽  
pp. 65-78 ◽  
Author(s):  
K. S. Sandhu ◽  
V. K. Arora ◽  
Ramesh Chand
Keyword(s):  
Water Supply ◽  
Grain Yield ◽  
Capital Investment ◽  
Wheat Yield ◽  
Fertilizer N ◽  
Nitrogen Response ◽  
Fertilizer Nitrogen ◽  
Available Water ◽  
Irrigation Regimes ◽  
Input Prices

Long-term data (20 years) on wheat (Triticum aestivum) grain yield under various fertilizer-nitrogen (N) and water conditions in rainfed and irrigated environments of sub-tropical north India were used to assess the magnitude and economics of N response in relation to amount and timing of irrigation. Treatments comprised combinations of fertilizer N rates (ranging from 0 to 150 kg ha−1) and irrigation regimes (rainfed, supplemental, limited, and adequately irrigated). Regression analysis of wheat yield against available water supply and fertilizer N showed a strong interaction between the two variables for grain yield and input use efficiency. The effect, on grain yield and returns, of increasing the N rate for a given water supply was influenced by the irrigation regimes. Economic optimization of water and N, based on constrained profit maximization technique, showed that optimum amounts of available water (or irrigation) and fertilizer N are related directly to the capital investment. Increased input prices lowered their optimum levels for a given investment. The analysis suggests an approach for resource allocation that relates to capital investment and input prices.

Estimating shallow soil available water supply for Douglas-fir forests of the coastal Pacific Northwest: climate change impacts

2018 ◽  
Vol 48 (4) ◽  
pp. 421-430 ◽  
Author(s):  
K.M. Littke ◽  
D. Zabowski ◽  
E. Turnblom ◽  
R.B. Harrison
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
Pacific Northwest ◽  
Climate Change Impacts ◽  
Douglas Fir ◽  
Future Climate Change ◽  
Available Water ◽  
Temperature And Precipitation ◽  
Shallow Soil ◽  
Severe Climate Change

Douglas-fir forests of the coastal Pacific Northwest experience yearly summer droughts; however, the variation in shallow soil available water supply throughout the region is not well understood nor is the effect of future climate change. Soil moisture sensors were installed in 60 Douglas-fir plantation forests over 6 years. Stands were grouped by physiographic regions to describe differences in climate and available water supply. Monthly available water supply (MAWS) (0–50 cm) was calculated as the average daily available moisture content. MAWS was modeled using monthly climate variables, and the equation was then used to predict the change in MAWS due to mild, moderate, and severe climate change predictions. Regional monthly air temperature and precipitation were strongly predictive of MAWS. Mild to severe climate change are predicted to decrease yearly available water supply by 8% to 19%, while summer available water supply will decrease from 25% to 72%. The greatest decreases due to climate change will be found in the coastal regions of Washington and Oregon due to greater negative effects of temperature on available water supply. Climate change, especially the most severe predictions, was shown to have a sizeable effect on shallow soil available water supply in coastal Douglas-fir forests.

scholarly journals Improving Water Supply Capacity of Drainage Systems at Humid Areas in the Changing Climate

2021 ◽  
Vol 68 (1) ◽  
pp. 29-40
Author(s):  
Lyudmyla Kuzmych ◽  
Galyna Voropay ◽  
Nelya Moleshcha ◽  
Olena Babitska
Keyword(s):  
Water Supply ◽  
Water Scarcity ◽  
Resource Saving ◽  
Drainage Systems ◽  
Changing Climate ◽  
Available Water ◽  
Close Proximity ◽  
Different Types ◽  
The Face ◽  
Supply Capacity

Abstract The paper focuses on research on improving the water supply of drainage systems of humid areas in the context of climate change. The aim of the research is to elaborate on the ways for increasing the available water supply of drainage systems and restoring active water regulation on reclaimed lands in a changing climate. The paper presents the results of the research on improving the available water supply of drainage systems in the humid zone of Ukraine in a changing climate. It was specified in the face of increasing water scarcity providing the optimal water regime regulation on drained lands is possible due to the increase in the available water supply of drainage systems. It can be achieved thanks to the accumulating capacity of reclaimed areas, namely usage of free soil capacity of the aeration zone and open canals, accumulation of water reserve volumes in storage tanks due to the accumulation of surface and drainage runoff. Taking into account the design features of different types of drainage systems, existing water management technologies, characteristics of water sources and their close proximity to the drainage systems, the technological schemes of water intake from rivers and reservoirs, and its supply to the drained areas for irrigation needs were developed. In a face of increasing water scarcity, it is also expedient to apply resource-saving technologies to control the available water supply for crops.

Enumeration and Identification of Asbestos Fibres in Water

1974 ◽  
Vol 32 ◽  
pp. 526-527 ◽  
Author(s):  
O. Mudroch ◽  
J. R. Kramer
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Drainage Basin ◽  
Lake Superior ◽  
Research Work ◽  
List Type ◽  
The West ◽  
Asbestos Fibre ◽  
Amphibole Asbestos

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.

Bacterial biofilm behavior in water-supply lines of dental units

1992 ◽  
Vol 50 (1) ◽  
pp. 882-883
Author(s):  
B.D. Tall ◽  
K.S. George ◽  
R. T. Gray ◽  
H.N. Williams
Keyword(s):  
Water Supply ◽  
Medical Devices ◽  
Biofilm Formation ◽  
Bacterial Biofilm

Studies of bacterial behavior in many environments have shown that most organisms attach to surfaces, forming communities of microcolonies called biofilms. In contaminated medical devices, biofilms may serve both as reservoirs and as inocula for the initiation of infections. Recently, there has been much concern about the potential of dental units to transmit infections. Because the mechanisms of biofilm formation are ill-defined, we investigated the behavior and formation of a biofilm associated with tubing leading to the water syringe of a dental unit over a period of 1 month.

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