scholarly journals Utilizing GRACE and GLDAS data for estimating groundwater storage variability over the Krishna Basin

2018 ◽  
Vol IV-5 ◽  
pp. 129-136 ◽  
Author(s):  
A. S. Nair ◽  
J. Indu
Keyword(s):  
Fresh Water ◽  
South India ◽  
Water Security ◽  
Primary Reason ◽  
Wet Season ◽  
Groundwater Storage ◽  
Groundwater Balance ◽  
Human Needs ◽  
Irrigation Projects ◽  
Krishna Basin

<p><strong>Abstract.</strong> Groundwater is utilized intensively as a source of fresh water for irrigation and human needs. Hence, it is necessary to monitor groundwater storage for water security of the region in the future. The present study aims to evaluate the groundwater resource over the Krishna basin in South India. The basin comprises of 210 major and medium irrigation projects, which makes it important to evaluate the groundwater balance for a sustainable groundwater draft. This study evaluates the trend in groundwater anomaly derived from GRACE mascon product. Results indicate that the Krishna basin is subjected to a strong decline in groundwater at a rate of 0.34<span class="thinspace"></span>cm per year. Further, the study explores the seasonality of precipitation and its effect on groundwater by adopting an entropy-based approach. Results indicate the combined effect of delay in precipitation to attain peak and reduced duration of the wet season as a primary reason for the decline in the groundwater storage. The result shows that the reduction in groundwater storage affects the evapotranspiration over the region.</p>

Studies on the fresh-water Oligochaeta of South India

Hydrobiologia ◽  
1965 ◽  
Vol 26 (3-4) ◽  
pp. 463-483 ◽  
Author(s):  
K. Vanamala Naidu
Keyword(s):  
Fresh Water ◽  
South India

scholarly journals Groundwater Balance Study in the High Barind, Bangladesh

2013 ◽  
Vol 39 ◽  
pp. 11-26 ◽  
Author(s):  
AHM Selim Reza ◽  
Quamrul Hasan Mazumder ◽  
Mushfique Ahmed
Keyword(s):  
Groundwater Recharge ◽  
Groundwater Storage ◽  
Balance Study ◽  
Groundwater Balance ◽  
Thiessen Polygon ◽  
Storage Potential ◽  
Polygon Method ◽  
Annual Discharge

The annual groundwater recharge and discharge of aquifer of the Sapahar and Porsha Upazillas is estimated by Thiessen polygon method varies from 106.41 to 244 Mm3 and 93.77 to 291 Mm3 respectively. The calculated groundwater recharge of aquifer of the study area shows that the rate of groundwater recharge of aquifer in Porsha Upazilla is higher than that of Sapahar Upazilla and is characterized by very suitable groundwater storage potential. The overall groundwater balance study in the study area indicates that there exists a balance between annual recharge and withdrawal up to 1993 but after period of 1993 discharge exceeds the recharge continuing till today. But hereforth a cumulative annual deficit is found to exist because of progressive annual discharge in Sapahar Upazilla. 23.99 to 42.08 Mm3 of groundwater is discharged by discharging mechanisms. The rest of groundwater is discharged by natural seepage. DOI: http://dx.doi.org/10.3329/rujs.v39i0.16539 Rajshahi University J. of Sci. 39, 11-26 (2011)

scholarly journals Spatial Variation and Controlling Factors of H and O Isotopes in Lancang River Water, Southwest China

2019 ◽  
Vol 16 (24) ◽  
pp. 4932 ◽  
Author(s):  
Kunhua Yang ◽  
Guilin Han ◽  
Jie Zeng ◽  
Bin Liang ◽  
Rui Qu ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
River Water ◽  
Hydrological Cycle ◽  
Water Cycle ◽  
Water Security ◽  
Controlling Factors ◽  
Main Stream ◽  
Wet Season ◽  
Lancang River ◽  
O Isotopes

Climate changes and other human activities have substantially altered the hydrological cycle with respect to elevation. In this study, longitudinal patterns in the stable isotopic composition (δ2H and δ18O) of Lancang River water, originating from the Qinghai–Tibetan Plateau, are presented, and several controlling factors in the wet season are hypothesized. Lancang River water δ2H (−145.2‰ to −60.7‰) and δ18O (−18.51‰ to −8.49‰) were low but close to those of the Global Meteoric Water Line. In the upper reaches of the river, δ2H decreased longitudinally, potentially due to groundwater inputs and melting ground ice in the headwater zone and to an increasing proportion of glacier meltwater with decreasing elevation. In the middle reaches of the river, δ2H values increased slowly moving downstream, likely due to shifts in precipitation inputs, as evidenced by the isotopic composition of tributaries to the main stream. In the lower reaches of the river, the isotopic composition was relatively invariant, potentially related to the presence of large artificial reservoirs that increase the water resident time. The results reveal different hydrological patterns along an alpine river in central Asia associated with both natural and anthropogenic processes. Understanding the degree and type of human interference with the water cycle in this region could improve water management and water security.

Assessment of fresh water security in coastal Bangladesh: An insight from salinity, community perception and adaptation

2017 ◽  
Vol 137 ◽  
pp. 68-81 ◽  
Author(s):  
M. Tauhid Ur Rahman ◽  
Md. Rasheduzzaman ◽  
Md Arman Habib ◽  
Afzal Ahmed ◽  
Syed Mohammed Tareq ◽  
...  
Keyword(s):  
Fresh Water ◽  
Water Security ◽  
Community Perception ◽  
Coastal Bangladesh

scholarly journals Socio-hydrology and the science–policy interface: a case study of the Saskatchewan River basin

2014 ◽  
Vol 18 (4) ◽  
pp. 1413-1422 ◽  
Author(s):  
P. Gober ◽  
H. S. Wheater
Keyword(s):  
First Nations ◽  
River Basin ◽  
Water Cycle ◽  
Environmental Flows ◽  
Water Security ◽  
Resource Exploitation ◽  
Economic Sectors ◽  
Rapid Urbanization ◽  
Science And Policy ◽  
Human Needs

Abstract. While there is a popular perception that Canada is a water-rich country, the Saskatchewan River basin (SRB) in Western Canada exemplifies the multiple threats to water security seen worldwide. It is Canada's major food-producing region and home to globally significant natural resource development. The SRB faces current water challenges stemming from (1) a series of extreme events, including major flood and drought events since the turn of the 21st century, (2) full allocation of existing water resources in parts of the basin, (3) rapid population growth and economic development, (4) increasing pollution, and (5) fragmented and overlapping governance that includes the provinces of Alberta, Saskatchewan, and Manitoba, various Federal and First Nations responsibilities, and international boundaries. The interplay of these factors has increased competition for water across economic sectors and among provinces, between upstream and downstream users, between environmental flows and human needs, and among people who hold different values about the meaning, ownership, and use of water. These current challenges are set in a context of significant environmental and societal change, including widespread land modification, rapid urbanization, resource exploitation, climate warming, and deep uncertainties about future water supplies. We use Sivapalan et al.'s (2012) framework of socio-hydrology to argue that the SRB's water security challenges are symptoms of dynamic and complex water systems approaching critical thresholds and tipping points. To Sivapalan et al.'s (2012) emphasis on water cycle dynamics, we add the need for governance mechanisms to manage emergent systems and translational science to link science and policy to the socio-hydrology agenda.

scholarly journals PREHISTORIC ARCHAEOLOGY IN NORTHERN AUSTRALIA

1986 ◽  
Vol 7 (2) ◽  
pp. 1-3
Author(s):  
Harry Allen
Keyword(s):  
Fresh Water ◽  
Coastal Plain ◽  
Northern Territory ◽  
Northern Australia ◽  
Prehistoric Archaeology ◽  
Wet Season ◽  
Mountain Area ◽  
Plain Area ◽  
The North ◽  
North Western

The northern part of North Australia is not far from Java and Timor. There are great numbers of influences in the North Western part of Australia from Indonesian region. The coast alligator river area is 200 kilometres east of Darwin, Northern Territory is now 60 kilometres from the coast to the mountain area. The plain area is flat and the water is salty, being tidal on the coast. Further inland the river is fresh water. To day there are few mangroves in this area, but there is evidence that mangroves were more widespread between 6.000 - 3.000 BP. During the wet season the coastal plain is flooded.

scholarly journals Mapping irrigation potential from renewable groundwater in Africa – a quantitative hydrological approach

2014 ◽  
Vol 11 (6) ◽  
pp. 6065-6097 ◽  
Author(s):  
Y. Altchenko ◽  
K. G. Villholth
Keyword(s):  
Economic Factors ◽  
Groundwater Balance ◽  
Physical Constraints ◽  
Human Needs ◽  
Groundwater Irrigation ◽  
Irrigation Potential ◽  
Environmental Requirements ◽  
High Uncertainty ◽  
Irrigation Requirements ◽  
Socio Economic Factors

Abstract. Groundwater provides an important buffer to climate variability in Africa. Yet groundwater irrigation contributes only a relatively little share of cultivated land, approximately 1% (about 2 million hectares) as compared to 14% in Asia. While groundwater is over-exploited for irrigation in many parts in Asia, previous assessments indicate an under-utilized potential in parts of Africa. As opposed to previous country-based estimates, this paper derives a continent-wide, distributed (0.5° spatial resolution) map of groundwater irrigation potential, indicated in terms of fractions of cropland potentially irrigable with renewable groundwater. The method builds on an annual groundwater balance approach using 41 years of data, allocating only that fraction of groundwater recharge that is in excess after satisfying other human needs and environmental requirements, while disregarding any socio-economic and physical constraints in access to the resource. Due to high uncertainty of groundwater environmental needs, three scenarios, leaving 30, 50 and 70% of recharge for the environment, were implemented. Current dominating crops and cropping rotations and associated irrigation requirements in a zonal approach were applied in order to convert recharge excess to potential irrigated cropland. Results show an inhomogeneously distributed groundwater irrigation potential across the continent, even within individual countries, reflecting recharge patterns and presence or absence of cultivated cropland. Results further show that average annual groundwater available for irrigation ranges from 692 to 1644 km3 depending on scenario. The total area of cropland irrigable with groundwater ranges from 27.2 to 64.3 million ha, corresponding to 12.5 to 29.6% of the cropland over the continent. The map is a first assessment that needs to be complimented with assessment of other factors, e.g. hydrogeological conditions, groundwater accessibility, soils, and socio-economic factors as well as more local assessments.

scholarly journals Water Security in Green Campus Assessment Standard

2019 ◽  
Vol 93 ◽  
pp. 02003 ◽  
Author(s):  
Mia Wimala ◽  
Bob Zirads ◽  
Rindu Evelina
Keyword(s):  
Fresh Water ◽  
Analytical Hierarchy Process ◽  
Human Life ◽  
Water Security ◽  
The Earth ◽  
Green Campus ◽  
Points Of View ◽  
Assessment Standard ◽  
Hierarchy Process ◽  
Process Method

The importance of fresh water in human life entails people to be conscious of conserving the resources since only one percent of the total fresh water on the earth is easily accessible. Green campus is a concept implemented by campuses where policies are lead to ecological points of view. This research aims to update the UI GreenMetric standard, focusing on Water (WA) category as a recommendation for Universitas Indonesia as the initiator. Referrals from other related standards, i.e. STARS® and Greenship were done on developing the category with its contents. Furthermore, the re-weighting and re-scoring system of the newly developed category were carried out using Analytical Hierarchy Process method, adjusted to the existing laws/regulations in Indonesia. For verification purposes, a study on campus performance at Universitas Katolik Parahyangan, was conducted using the newly developed category. The proposed strategies were then set to improve the campus performance in the future.

Industry and water security: overarching conclusions

2001 ◽  
Vol 43 (4) ◽  
pp. 101-103
Author(s):  
Björn Stigson
Keyword(s):  
Sustainable Development ◽  
Fresh Water ◽  
Water Use ◽  
Best Practice ◽  
Water Security ◽  
Public Private Partnerships ◽  
New Public ◽  
Internal Operations ◽  
Framework Conditions ◽  
Water Issues

Fresh water is key to sustainable development. World Business Council for Sustainable Development members are addressing fresh water use 'within the corporate fenceline'. However, to address water issues 'outside the corporate fenceline' will require creative new public-private partnerships. Government's role is to provide sound framework conditions that will encourage businesses to invest time, staff and resources to address vital fresh water issues. Industry is committed to best practice within its internal operations and is ready to enter into partnerships to address broader fresh water issues.

Sign in / Sign up

Export Citation Format

Share Document