Probable effects of increasing pumpage from the Schofield ground-water body, Island of Oahu, Hawaii

1976 ◽  
Keyword(s):  
Author(s):  
P. V. R. M. Reddy M. Girija Shankar ◽  
B. Janardhan Reddy Y. Shankar Naik ◽  
Swati P. Jayakannan ◽  
V. S. Kiran G. Prabhaker

The study was piloted to assess the impact of watershed project interventions from 2011-2018, largely Natural Resource Management (NRM) and Production System Improvement (PSI) measures in Kurichedu PMKSY watershed project, Prakasam district, Andhra Pradesh. The specific objectives included detecting changes in agricultural land use, water body surface area, soil moisture; ground water levels, crop diversification, crop yields and livestock productivity. The net treatable area of the project is 4311 ha. Area under cultivated crops, both agriculture and horticulture crops increased by 414 ha, accounting to 16.6% over pre project period. The NRM activities augmented total water body surface area from 57 ha to 67 ha (17.5%).Ground water table was mainly impacted by deficit rainfall. In kharif season, the area of rice and plantation crops are reduced, while the area of red gram, cotton and chilli improved. In rabi season, the area of tobacco decreased. The horticultural crop area in post project period increased by 84 ha. The productivity of both agricultural and horticultural crops increased during the project period. The yield increase ranged from 2.0 percent in red gram to 12.1 percent in cotton. The milk productivity enhanced from 2.3 to 3.2 L per animal per day with total milk production increase by 15.8 percent. The milk production increase per year in the project period is mainly due to higher milk yield per day per animal.


Author(s):  

Results of experimental research on the diagnostics of a ground dam status with seismic and electric sounding have been discussed. Seismic combined МПВ and MASW methods as well as integrated method of electric vertical and differential sounding have been applied. According to the seismic data ground elastic properties have been determined, and refractors and thinning zones in the embankment have been identified. According to electric sounding conductivity zones within the embankment and its foundation connected with the ground moisture due to water filtration from the water body have been revealed.


1999 ◽  
Vol 19 (4) ◽  
pp. 90-96 ◽  
Author(s):  
Sean M. Dean ◽  
John M. Lendvay ◽  
Michael J. Barcelona ◽  
Peter Adriaens ◽  
Nikolaos D. Katopodes

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Rebecca Tharp ◽  
Dana Allen

Abstract Background Road deicing salts are impacting freshwater ecosystems in snowy regions worldwide. Rock salt (typically sodium chloride) is transported to and stored in regional facilities that operate year-round and are continuous potential sources of chloride discharge to adjacent water bodies, resulting in different impacts to aquatic ecosystems than chloride pollution from spatially diffuse road networks. The regulatory tools and associated monitoring regimes used by state and federal agencies related to permitting of these facilities is inconsistent. Selection of the regulatory standards and monitoring location in the receiving water body (and how the definition of ‘receiving water body’ is applied) can have a significant influence on the measured or modeled impact of a facility on aquatic ecosystems. Additionally, selection of the monitored media (surface water, soil pore water, shallow ground water, or vegetation) can further influence findings, resulting in inconsistent conclusions of environmental impact and potentially allow exceedances of regulatory thresholds of chloride. This study evaluates chloride pollution from salt loading over two years from a state-permitted salt storage and transport facility in Shelburne, Vermont, USA to an adjacent wetland and river that drains to Lake Champlain. Water quality results and modeled assumptions made by the permittee were compared to monitoring data at two discharge points from the site including a drainage channel downstream of the site’s stormwater pond and at a shallow ground water seep below the rail car unloading area. Results Results indicate elevated chloride concentrations (average of 243 and 643 mg L−1) at the discharge points to the receiving water body, in conflict with findings from annual permittee assessments. Soil cores taken in the wetland in the vicinity of the control and two discharge points also indicate elevated Cl− (p ≤ 0.035) and Na+ (p ≤ 0.0006). Samples of Tsuga canadensis at the discharge points and at the control site indicate elevated chloride in plant tissues. Conclusions Determination of exceedances of chronic and acute standards vary based on the sampling location and medium, indicating a need for consistency and outcome-based monitoring point selection criteria and a move away from reliance on self-reporting by permittees.


2016 ◽  
Vol 39 ◽  
pp. 101-104 ◽  
Author(s):  
Anna Grava ◽  
Marco Rotiroti ◽  
Letizia Fumagalli ◽  
Tullia Bonomi

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
NITU SINGH ◽  
FATIMA SULTANA

India is a developing nation and is dependent on its natural resources for growth and development. Water, being one of the vital natural resource, must be used judicially for the sustainable development. Present study focuses on the analysis of physicochemical parameters (pH, Turbidity, Alkalinity, Total Hardness, Total dissolved solids, Conductivity, Chloride, Sulfate, Fluoride contents) of ground water and surface water in Kota City (Rajasthan). The study shows the adverse impact of exploitation and urbanization on water resources of Kota City (Rajasthan). Some physicochemical parameters exceed the desirable limits as defined by WHO and Indian Standards in the selected sites. The level of pollution in ground water and surface water of Kota City is increasing due to urbanization.


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