Nature Environment and Pollution Technology

M. Singh ¹, V. Shinde ¹, S. K. Pradhan ¹, A. L. Chalodiya ¹, K. N. Shukla ¹

Affiliations
1 Deptt. of Soil & Water Engg., N.M.College of Agriculture, Navsari Agricultural University, Navsari-396 450, Gujarat, IN

Abstract

The present study highlights on the application of an Integrated Water Resources Management (IWRM) tool, Water Evaluation and Planning (WEAP) system model for hydrologic simulation of Mahanadi river basin in India. A monthly time step hydrologic model was developed using rainfall-runoff method incorporated in WEAP with an aim to address the challenge of water resources estimation in Mahanadi basin. The model was set-up without taking into account effects of development and it was calibrated against measured flow data available at six gauging stations. A good agreement was observed between simulated and measured flow after calibration. Crop coefficient (Kc) and effective precipitation are the parameters changed during calibration. The range of calibrated parameters was found as ± 5 % and ± 1 % for Kc and effective precipitation respectively for different catchments. The simulation of stream flow using calibrated values revealed that, in most cases, the variation between measured and simulated stream flow values is less than 10%. This shows the good agreement with measured data by using calibrated parameters. The calibrated and validated model can be applied for runoff simulations in other basins with similar hydro-meteorological conditions. The results of the study demonstrate the potential of using WEAP model for water resource management and assessment of future resource development in the basin.

Keywords

Water Resources, Mahanadi River Basin, IWRM, Rainfall-Runoff Method.

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V. Shinde ¹, S. B. Nandgude ¹, M. Singh ¹

Affiliations
1 Agricultural and Food Engineering Department, IIT, Kharagpur-721 302, W.B., IN

Abstract

The present study highlights techniques to identify suitability of water for different purposes such as domestic, irrigation and industrial uses. Water samples from Olidih watershed in Jharia coalfield were collected in premonsoon (PRM) and post-monsoon (POM) seasons and analysed for different physico-chemical properties. Water Quality Index (WQI), Sodium Adsorption Ratio (SAR), percent sodium (%Na) and total hardness (TH) were determined on the basis of various physico-chemical parameters in order to ascertain the suitability of water for domestic, irrigation and industrial uses. The WQI for the study area found to vary from 23.86 to 166.72 in PRM season and from 22.14 to 146.44 in POM season. In 16.3% and 11.4% of watershed area, water is found unfit for drinking during PRM and POM seasons respectively. The calculated values of SAR and %Na indicate 'excellent to permissible use' of water for irrigation uses during both the seasons. High salinity, %Na and Mg-hazard values at some sites limit use for irrigation purposes. Box plots were plotted to represent seasonal concentration of the major ions which shows increasing trend of Ca, Na, NO₃ and SO₄ during POM.

Keywords

Coal Mine Area, Water Quality, Water Quality Index, GIS, Mine Water.

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