Products & Publications

A.     Products

A web-based tool for extreme climate analysis for Serayu and Krishna River Basins (code is developed by T S S S Prasad. The work is as part of the project Understanding Space-Time Variability of Climate Extremes for Societal Resiliency in Indonesia and India funded by the Asia-Pacific Network (APN) for Global Change Research, more information of the project can be found here)

A web-based streamflow forecasts’ diagnostic and post-processing tool, Hydro-EMOS

A web-based poverty visualization and analysis tool

B.    In Referred Journals

Ponukumati, P., and S. K. Regonda, Development of a Flood Impact Assessment Framework Integrating Crowdsourced Data and Geospatial Information for Data Sparse Urban Regions,  International Journal of Disaster Risk Reduction, https://doi.org/10.1016/j.ijdrr.2024.105048, 2025

Gorugantula, S., BVN. P. Kambhammettu, J.H. Srirangam and S.K. Regonda, Multivariate drought indices to analyse spatiotemporal drought propagation in a semi-arid river basin, Theoretical and Applied Climatology, https://doi.org/10.1007/s00704-024-05236-7, 2024

Mohammed, A., S. K. Regonda, and V. Cheruvu, Analytical probabilistic model to estimate exceedance probabilities of event runoff depth in urban catchments, Journal of Hydrology, https://doi.org/10.1016/j.jhydrol.2024.132407, 2024

Guniganti, S. K., S. K. Regonda, P. Athira, and S. Reed,  Modified calibration strategies and parameter regionalization potential for streamflow estimation using a hydrological model, Hydrological Sciences Journal. https://doi.org/10.1080/02626667.2024.2335294, 2024

Mohammed, A., S. K. Regonda, Synoptic circulation patterns of urban floods for the city of Hyderabad, International Journal of Climatology, https://doi.org/10.1002/joc.8250, 2023

Ponukumati, P., A. Mohammed, and S. K. Regonda, Insights on Satellite-Based IMERG Precipitation Estimates at Multiple Space and Time Scales for a Developing Urban Region in India. J. Hydrometeor., 24, 977–996, https://doi.org/10.1175/JHM-D-22-0160.1., 2023

Yanto, B. Rajagopalan, B. and S.K. Regonda, Linear and copula model for understanding climate drivers of hydroclimatic extremes: a case study of Serayu river basin, Indonesia, Acta Geophysica, https://doi.org/10.1007/s11600-023-01078-5, 2023

Gedam, S., H. Pallam, BVN. P. Kambhammettu, V. Anupoju, and S.K. Regonda, Propagation of uncertainties in short-term weather forecasts into irrigation schedules and crop growth simulations. Journal of Water Resources Planning and Management, https://doi.org/10.1061/JWRMD5.WRENG-5644, 2023

Mohammed, A., S. K. Regonda and N.R. Kopparthi, Climatological features of high temporal resolution rainfall over the Hyderabad city, India, Urban Climate, 42, https://doi.org/10.1016/j.uclim.2022.101118, 2022

Anupoju,V., BVN P Kambhammettu, and S.K. Regonda, Role of short-term weather forecast horizon in irrigation scheduling and crop water productivity of Rice. Journal of Water Resources Planning and Management, ASCE, https://doi.org/10.1061/(ASCE).WR.1943-5452.0001406, 2021

Sharma, V.C., and S. K. Regonda, Multi-Spatial Resolution Rainfall-Runoff Modelling—A Case Study of Sabari River Basin, India, Water, 13, https://doi.org/10.3390/w13091224, 2021

Dagani., K.R. S. K. Regonda, and C. Dornadula, Water and Food Nexus: Role of Socio-Economic Status on Water–Food Nexus in an Urban Agglomeration Hyderabad, India Using Consumption Water Footprint, Water, 13, doi: 10.3390/w13050637, 2021

Sharma, V.C., and S. K. Regonda, Two-Dimensional Flood Inundation Modeling in the Godavari River Basin, India—Insights on Model Output Uncertainty, Water, 13, doi: 10.3390/w13020191, 2021

 Regonda, S.K., B. F. Zaitchik, H.S. Badr, and M. Rodell, Using Climate Regionalization to Understand Climate Forecast System Version 2 (CFSV2) Precipitation Performance for the Conterminous United States (CONUS), Geophys. Res. Lett., 43, 6485 – 6492, doi:10.1002/2016GL069150, 2016

Brown, J. D., L. Wu, M. He, S. K. Regonda, H. Lee, D.-J. Seo, Verification of Temperature, Precipitation and Streamflow Forecasts from the NOAA/NWS Hydrologic Ensemble Forecast Service (HEFS): 1. Experimental Design and Forcing Verification, Journal of Hydrology, 519, doi:10.1016/j.jhydrol.2014.05.030, 2014

Brown, J. D., M. He, S. K. Regonda, L. Wu, H. Lee, D.-J. Seo, Verification of Temperature, Precipitation and Streamflow Forecasts from the NOAA/NWS Hydrologic Ensemble Forecast Service (HEFS): 2. Streamflow Verification, Journal of Hydrology, 519, doi:10.1016/j.jhydrol.2014.05.030, 2014

Regonda, S.K., D.-J. Seo, B. Lawrence, J.D. Brown, J. Demargne, Short-term Ensemble Streamflow Forecasting Using Operationally-Produced Single-valued Streamflow Forecasts – A Hydrologic Model Output Statistics (HMOS) Approach, Journal of Hydrology, 497, http://dx.doi.org/10.1016/j.jhydrol.2013.05.028, 2013.

Demargne et al., The Science of NOAA's Operational Hydrologic Ensemble Forecast Service, Bulletin of American Meteorological Society, http://dx.doi.org/10.1175/BAMS-D-12-00081.1, 2013.

Regonda, S.K., E. Zagona, and B. Rajagopalan, Prototype Decision Support System for Operations on the Gunnison Basin with Improved Forecasts, Journal of Water Resources Planning and Management,137, 2011 [http://dx.doi.org/10.1061/(ASCE)WR.1943-5452.0000133].

Regonda, S. K., B. Rajagopalan, M. Clark, A New Method to Produce Categorical Streamflow Forecasts, Water Resources Research, W09501, 2006.

Regonda, S. K., B. Rajagopalan, M. Clark, and E. Zagona, Multi-model Ensemble Forecast of Spring Seasonal Flows in the Gunnison River Basin, Water Resources Research, 42, W09404, 2006 [http://onlinelibrary.wiley.com/doi/10.1029/2005WR004653/full].

Regonda, S. K., B. Rajagopalan, U. Lall, M. Clark and Y. Moon, Local Polynomial Method for Ensemble Forecast of Time Series, Nonlinear Processes in Geophysics, Special issue on "Nonlinear Deterministic Dynamics in Hydrologic Systems: Present Activities and Future Challenges", 12, 397-406, 2005 [http://www.nonlin-processes-geophys.net/12/397/2005/npg-12-397-2005.pdf].

Regonda, S. K., B. Rajagopalan, M. Clark, and J. Pitlick, Seasonal Cycle Shifts in Hydroclimatology Over the Western US, Journal of Climate, 18, http://dx.doi.org/10.1175/JCLI-3272.1, 2005.

Regonda, S. K., Sivakumar, B, and Jain, A., Temporal Scaling in River Flow: Can it be Chaotic?, Hydrological Sciences, 49(3), 373-385, 2004.

C.    Presentations at Conferences

Sharma, V.C, S.K.Regonda, Y.V.Rama Rao, Y.K. Reddy, K. Nagaratna,  Comparison between radar-, rain gauge- and satellite- based rainfall for the Hyderabad region, 3rd conference on India Radar Meteorology, IITM Pune, January, 2019 

Phanindra KBVN and S.K. Regonda, Decision Support Tools for Real-time Management of Water Resources: Opportunities and Challenges in Urban Context, Visakhapatnam Urban Observatory Workshop, Visakhapatnam, Andhra Pradesh, India, 21 March 2017

Demargne J., J.D. Brown, L. Wu, S.K. Regonda, M. He, M. Fresch, D.-J, Seo, Short-to-Long Range Hydrologic Ensemble Forecast Service in the U.S. National Weather Service, the Centre for Australian Weather and Climate Research (CAWCR) Workshop, Melbourne, Australia, October 21 - 23 2013. 

Regonda S.K, Ensemble Postprocessor (EnsPost): Science Details of EnsPost Technique and EnsPostPE Control Options, HEFS Training Workshop (3), National Weather Service, Silver Spring, MD, April 30 – May 2, 2013

Demargne J., J.D. Brown, L. Wu, S.K. Regonda, M. He, M. Fresch, Hydrologic Ensemble Forecast Service for Operational Short-to-Long Range Hydrometeorological and Hydrologic Ensembles in the U.S. National Weather Service, European Geophysical Union (EGU) General Assembly, Vienna, Austria, April 7-12, 2013.

Regonda S.K, Ensemble Postprocessor (EnsPost) Calibration: Software Demonstration and Scientific Guidance, HEFS Training Workshop (2), National Weather Service, Silver Spring, MD, September 17 – 21, 2012

Regonda S.K, Ensemble Postprocessor, HEFS Training Workshop (1), National Weather Service, Silver Spring, MD, March 20 – 22, 2012

Regonda S.K, J.D. Brown, J. Demargne, and D.-J. Seo, Evaluation of a Gaussian Regression Based Streamflow Postprocessor Using Simulated Streamflows for Test Basins in the Southeast U.S., HEPEX International Workshop on Post-processing and Verification of Hydrological Ensemble Predictions, Delft, the Netherlands, June 7-9, 2011.

Demargne J., L. Wu, S.K. Regonda, and J.D. Brown, Verification of Experimental Short-term Streamflow Ensemble Forecasts Produced by the U.S. National Weather Service, American Geophysical Union (AGU) Fall Meeting, San Francisco, CA, December 13-17, 2010.

Seo, D.-J., J. Demargne, L. Wu, Y. Liu, J.D. Brown, S.K. Regonda, and H. Lee, Hydrologic ensemble prediction for risk-based water resources management and hazard mitigation, 3rd Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling (JFIC2010), Las Vegas, NV, June 27 - July 1, 2010.

Regonda, S.K, D.-J. Seo, and B. Lawrence, Short-term Ensemble Streamflow Forecasting Using Operationally-Produced Single-valued Streamflow Forecasts, European Geophysical Union (EGU) General Assembly, Vienna, Austria, May 3-7, 2010.

Regonda, S.K., H. Herr, B. Lawrence, and D.-J. Seo, Short-term Ensemble Streamflow Forecasting - A Hydrologic Model Output Statistics (HMOS) Approach, American Geophysical Union Fall Meeting, San Francisco, CA, December 15- December 19, 2008.

Schaake, J. C., R. Hartman, K. Werner, S.K. Regonda, and J. Brown, Post-Processing Hydrologic Ensemble Forecasts to fix Bias and Spread Problems, American Geophysical Union Fall Meeting, San Francisco, CA, December 15- December 19, 2008.

Regonda, S.K., and D.-J. Seo, Statistical Post Processing of Streamflow Ensembles to Improve Reliability over a Wide Range of Time scale, poster presentation at the Climate Prediction Program for the Americas Meeting, Silver Spring, MD, September 29 – October 1, 2008.

Regonda, S.K., H. Herr, B. Lawrence, and D.-J. Seo, Hydrologic Model Output Statistics (HMOS) Streamflow Ensemble Processor, National Development and Operations Hydrologist (DOH) Workshop, Silver Spring, MD, July 15-July 17, 2008.

Schaake, J. C., R. Hartman, J. Brown, D.-J. Seo and S.K. Regonda, A Post-Processor for Hydrologic Ensemble Forecast Products, National Development and Operations Hydrologist (DOH) Workshop, Silver Spring, MD, July 15-July 17, 2008.

Schaake, J. C., R. Hartman, J. Brown, D.-J. Seo and S.K. Regonda, A Post-Processor for Hydrologic Ensemble Forecasts, European Geosciences Union, Vienna, Austria, April 13-April 18, 2008.

Demargne, J., D.-J. Seo, L. Wu, J. Brown, S.K. Regonda, and H. Lee, Short-Term Ensemble Activities, COMET Advanced Hydrologic Sciences Course, UCAR, Boulder, CO, May 15-May 24, 2007.

Regonda, S. K., B. Rajagopalan, M. Clark, and E. Zagona, Statistical Multimodel Ensemble Forecasting Technique: Application to Spring Flows in the Gunnison River Basin, River Forecast Center Short-Term Ensemble Workshop, National Weather Service, Silver Spring, MD, November 28- November 30, 2006.

Regonda, S. K., B. Rajagopalan, U. Lall, M. Clark and Y. Moon, Local Polynomial Method for Ensemble Forecast of Time Series, poster presentation at the American Geophysical Union Fall Meeting, San Francisco, CA, December 5- December 9, 2005.

Regonda, S. K., B. Rajagopalan, M. Clark, and E. Zagona, Multi-model Ensemble Forecast of Spring Seasonal Flows in the Gunnison River Basin”, American Geophysical Union Spring Meeting, New Orleans, LA, May 23-May 27, 2005.

Regonda, S. K., B. Rajagopalan, M. Clark, and J. Pitlick, Seasonal Cycle Shifts in Hydroclimatology over the Western US, American Geophysical Union, Hydrology Days, Fort Collins, CO, Mar 10- Mar 12, 2004. 

Regonda, S. K., B. Rajagopalan and K. Strzepek, Storage Analysis Using Stochastic Nonparametric Streamflow Simulation: Case Study of the Proposed Seaman Reservoir Expansion in Northern Colorado, American Geophysical Union, Hydrology Days, Fort Collins, CO, Mar 31 – Apr 2, 2003.

D.    Book Chapter

 Rajagopalan, B., K. Grantz, S. K. Regonda, M. Clark and E. Zagona, Ensemble Streamflow Forecasting: Methods and Applications, in Advances in Water Science Methodologies Ed by U. Aswathanarayana, Taylor and Francis, Netherlands, 2005.

E.    Invited Seminars

Invited seminar entitled Hydrologic Ensemble Forecasting as part of the Virtual Seminar Series entitled Advanced Research in Water Engineering and Management on 14 October 2020 by Jenderal Soedirman University, Purwokerto, Indonesia 

Delivered an invited lecture entitled “Google Earth Engine and its applications” and an hands on session as part of the seven-day (1 - 7 July, 2022) SERB Sponsored Workshop on Remote Sensing and GIS for Agriculture and Water Resources Management at IIT Hyderabad (7 July 2022). The session was attended by around 22 selected students of different disciplines from different academic institutes. 

F.    Scientific activities 

One of the organizers of a session “H111 - Understanding, Modeling, Forecasting and Mitigation of Urban and Riverine Flood Risks in South Asia” at the AGU Fall 2021 conference held in (13-17) Dec. 2021. The session was related to scientific challenges and solutions specific to urban and riverine floods in the south Asian region.