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India
Application of a modified SCS-CN model - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 10:20 AMIn this study, the modified version of the Soil Conservation Services-Curve Number (SCS-CN) by Mishra and Singh (1998a) was employed to the data of 14 watersheds falling in the arid (Rajasthan) and 2 watersheds in the sub-humid (Madhya Pradesh and Uttar Pradesh) regions of India and the results were compared with those of the existing SCS-CN method. The modified version is found to perform better than the existing SCS-CN method in all applications to the data of 16 watersheds.
Calibration of a catchment model using Shuffled Complex Evolution Algorithm (SCE-UA) - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 12:17 AMThe study attempts to apply the Shuffled Complex Evolution Algorithm (SCE-UA) of Duan et al for the calibration of a Conceptual Rainfall Runoff (CRR) model. CRR modeling lies intermediate between physically based models and black box models.
Flood estimation for large catchments using deterministic approach – A research report by National Institute of Hydrology
Posted on 28 Jun, 2010 08:04 PMThe report presents an interactive software that has been developed to not only provide design flood estimates for large as well as small sized catchments but also help the users analyse their historical rainfall-runoff records for calibration and validation of the various techniques for part or whole of the catchment and river reaches.
Software for reservoir analysis – A research report by National Institute of Hydrology
Posted on 28 Jun, 2010 05:14 PMThe report describes a software developed by the National Institute of Hydrology (NIH) for reservoir analysis in view of the importance of reservoir operation problem in the Indian context and the non-availability of generalized software for reservoir analysis.
Spectral response of rice plant canopy – A research report by National Institute of Hydrology
Posted on 28 Jun, 2010 04:26 PMThe study was conducted with the objective of establishing the relationship between spectral reflectance of rice canopy and crop growth. Significant relationship was developed between spectral indices and growth period. The coefficient of correlation between crop growth period and spectral reflectance ranged from 0.41 to 0.97 for the plant growth stages and canopy reflectance in single band and ratio spectra.
Expression of interest from enterprises to provide solutions for water challenges under technology mission:Winning, augmentation and renovation for water (Phase-II)
Posted on 28 Jun, 2010 03:52 PMDepartment of Science and Technology (DST), through Consultancy Development Centre (CDC), invites Expression of Interest (EoI) to provide solutions for water challenges under Technology Mission: Winning, Augmentation and Renovation (WAR) for Water from Indian and overseas Enterprises.
Field testing of weighing raingauge - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 10:48 PMThe study attempts to carry out field testing of the weighing raingauge for measurement of rainfall, which is at the core of all hydrological measurements. The tipping bucket rain gauges are generally used for automated recording of rainfall data. It has been reported that the tipping bucket mechanism of such raingauges frequently malfunctions and gives erroneous data, especially during high intensity rainstorms.
Single column hydrologic simulation using SHE models - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 10:31 PMThe Systems Hydrologique European – European Hydrological System (SHE) is a physically based distributed model and it provides a useful setup for understanding the importance of evaporation data and soil parameters.
In this study, single column hydrologic simulations have been carried out for examining the sensitivity of this model to pan evaporation data of the various stations as well as the increase in conductivity of the unsaturated zone. Furthermore, the reduction in the value of exponent appearing in the Averjanov’s formula and reduction in the values of moisture content at wilting point and residual water content has been studied for a single grid of 2 km X 2 km size of the Narmada river.
Analysis of flow to a multi-aquifer well - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 08:51 PMIn this study, unsteady flow towards a fully penetrating well screened in both the aquifers of a two-aquifer system separated by an aquitard has been analyzed using numerical approach. Existence of multi-aquifer systems is common in a sedimentary basin.
Assessment of irrigation return flow - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 08:42 PMThis report presents the various methodologies for correct assessment of irrigation return flow, which is one of the most significant components in the water balance of irrigation command areas. A part of the water applied to the irrigation fields percolates deep to recharge the groundwater and is known as irrigation return flow. In this report methodologies have been presented for assessment of irrigation return flow through soil moisture modeling, water balance approach, experimental determination and groundwater modeling.