In this research work, environmental monitoring processes and assessments are carried out by the modeling analysis of water quality Chambal River in state Rajasthan. Various samples were collected from different locations along course river flow. This is used for kinds human, animal, agriculture corp. activities. Comparative analyses conducted on parameters, viz. biochemical oxygen demand, chem...

Hydrological Simulation Program Fortan (HSPF) is a mathematical modelling program developed by the United States Environmental Protection Agency (EPA). HSPF is used for simulating of watershed hidrology and water quality. In this paper, an evolutionary algorithm is applied to automated watershed model calibration. The calibration stage of the model is very important in order to reduce the error...

Introduction: Monitoring and controlling water resources and using health risk assessment approaches for water pollutants are essential for health promotion programs. This study aims to determine the water quality status and its spatiotemporal variation across the Kan River Basin, explore the interrelationship between surface and groundwater quality indices, and assess the nitrate health risk i...

In this study, SEDDEER (Sediment Deposition and Erosion), a stand-alone sediment and contaminant model which simulates one water box and the underlying multiple sediment bed layers, was incorporated into Water Quality Analysis Simulation Program (WASP7.4). WASP7.4 toxic module (TOXI7) was modified to include SEDDEER to develop WASP_SEDDEER model. Tests were designed to ensure that the coupling ...

the performance of the swat2012 model for estimation of hydrological budget in gharasou watershed, west of iran, during 1995 to 2005 was assessed. digital elevation model, hydro-climatological data, soil and land use maps with their properties relevant to the watershed were considered to fulfill the model. a branch program in swat-cup software (sufi2) program implemented to simulate and validat...

First posted May 18, 2023 For additional information, contact: Director, New Jersey Water Science CenterU.S. Geological Survey3450 Princeton Pike, Suite 110Lawrenceville, NJ 08648 The central Salem River in is subject to periods of water-quality impairment, marked by elevated concentrations phosphorus and chlorophyll-a, low large diurnal swings dissolved oxygen. These seasonal eutrophic conditi...

Systematic consideration of uncertainty in data, model structure, and other factors is generally unaddressed in most Total Maximum Daily Load (TMDL) calculations. Our previous studies developed the Management Objectives Constrained Analysis of Uncertainty (MOCAU) approach as an uncertainty analysis technique specifically for watershed water quality models, based on a synthetic case. In this stu...

In this paper, the one-dimension river quality system dynamics model was applied to the water quality simulation, and the conceptual GIS-SD frame was constructed. Based on the component GIS and system dynamics model, the experimental system of water quality simulation in water pollution accident was developed. The Songhua River water pollution accident which happened on November, 2005 was used ...

WASP-12 b, WASP-33 WASP-36 and WASP-46 b are four transiting planetary systems which we have studied. These systems' light curves were derived from observations made by the Transiting Light Exoplanet Survey Satellite (TESS) some ground-based telescopes. We used Exofast-v1 to model these calculate mid-transit times. Also, plotted TTV diagrams for them using times those available within literatur...