Hydrokinetic Resource Assessment in the Davao River: Integrating Flow Duration Curve with HEC-RAS 1D Model.

Additional Titles: This study conducted a hydrokinetic (velocity-based) resource assessment of the Davao River in Mindanao, Philippines. Using a twenty-year flow duration curve, nine steady-state flow boundary discharge rates were established within a calibrated 1D HEC-RAS model, discretized at 150-meter intervals. Depth-averaged velocities and channel depths were extracted to identify cross-sections that met the criteria of 1-2 m/s velocity and depths exceeding 1 meter for theoretical power density (PD) calculations. PD was estimated with the formula 0.5ρV^3C_p (where C_p = 1.0 for theoretical PD) and resulted in a reach-scale cumulative PD of 179.52 kW/m² at 10% exceedance probability, and 11.86 kW/m² at 90% exceedance probability. Potential sites are identified in the river segments situated along Barangays Callawa and Mandug. The identified sites are indicative of low-head turbine deployment but may necessitate higher-order modeling for a more robust hydrodynamic analysis. Nevertheless, the study's findings provide a foundational input for prototype design and techno-economic evaluations.

Authors: Renyl B. Barroca, Vincent Noe L. Gimagan, Althea Alexa M. Bentayao, Ken P. Cosares

Index Terms: Hydrokinetic Resource Assessment, HEC-RAS, Power Density, Flow Duration Curve, Davao River, Conference Paper., VoR.

URL: https://doi.org/10.5109/7395761
https://hdl.handle.net/2324/7395761
https://catalog.lib.kyushu-u.ac.jp/opac_download_md/7395761/2025_p1889.pdf

Trend Analysis of Variables and Modeling of Flow and Salinity of the Gorai River Using 1D HEC-RAS Model

Authors: Sabrina Mehzabin

Source: World Environmental and Water Resources Congress 2019. :374-381

Subject Terms: 0208 environmental biotechnology, 0207 environmental engineering, 02 engineering and technology

Estimation of Peak Flood Discharge for an Ungauged River and Application of 1D Hec-Ras Model in Design of Water Levels

Authors: Emina Hadžić, Ajla Mulaomorević-Šeta, Hata Milišić, Nerma Lazović

Source: Lecture Notes in Networks and Systems ISBN: 9783319713205

Subject Terms: 13. Climate action, 15. Life on land, 6. Clean water

Spatiotemporal variations of Manning’s roughness coefficient in the estuary of Langsa River based on field measurements and hydraulic modeling

Authors: Isma, Faiz ^{a, d, ⁎}, Kusuma, Muhammad Syahril Badri ^a, Adityawan, Mohammad Bagus ^{a, b, c}, Nugroho, Eka Oktariyanto ^a

Source: In Journal of Hydrology: Regional Studies October 2025 61

Efficient and Systematic Calibration of Manning’s Roughness Coefficients in River Networks: An Integrated Workflow Using Orthogonal Experiments and Successive Approximation

Authors: Xinyue Qiu, Junyu Hou, Yajun Xie, Weipeng Hu, Zhicheng Zhong, Liang Wang, Jinxian Qiu, Jilin Cheng

Source: Water ; Volume 18 ; Issue 4 ; Pages: 445

Subject Terms: 1D HEC-RAS model, parameter calibration, roughness coefficient, integrated workflow, orthogonal experiment, successive approximation

Subject Geographic: agris

File Description: application/pdf

Relation: Hydraulics and Hydrodynamics; https://dx.doi.org/10.3390/w18040445

Availability: https://doi.org/10.3390/w18040445

Dam Break analysis using 1D HEC RAS Model

Authors: BOZKUŞ, ZAFER, ASHRAF, Ammar

Availability: https://avesis.metu.edu.tr/publication/details/23e5dbf9-c27a-41a5-9551-f89b7dec1234/oai

Evaluating the Impact of Climate Change on Future Flooding Extent Using HEC-HMS and HEC-RAS Models: A Case Study of the Grand and Chagrin Rivers in Northeast Ohio.

Authors: Joshi, Umesh, Sharma, Suresh, Jha, Aayush

Source: Natural Hazards Review; Aug2026, Vol. 27 Issue 3, p1-20, 20p

Subject Terms: Floods, Hydrologic models, Hydraulic models, Riparian areas, Climate change

Geographic Terms: Ohio

Dam Break analysis using 1D HEC RAS Model

Authors: Ashraf, Ammar, Bozkuş, Zafer

Relation: https://hdl.handle.net/11511/73095

Availability: https://hdl.handle.net/11511/73095

Investigating the scour at piers of successive bridges with debris accumulation.

Authors: Al-Khafaji, Mahmoud Saleh, Abdulameer, Layth, Al-Awadi, Aysar Tuama, Al Maimuri, Najah M. L., Al-Dujaili, Ahmed N.

Source: Journal of Infrastructure Preservation & Resilience; 7/31/2025, Vol. 6 Issue 1, p1-18, 18p

Subject Terms: Scour (Hydraulic engineering), Bridge design & construction, Streamflow, Erosion, River conservation, Hydraulic models

Geographic Terms: Tigris River, Baghdad (Iraq)

Integrated Flood Hazard Assessment using GIS and 2D Hydraulic Modelling: A Case Study of Sanica River, Bosnia and Herzegovina.

Authors: Lazović, Nerma, Mulaomerović-Šeta, Ajla

Source: European Journal of Computational Mechanics; 2025, Vol. 34 Issue 3/4, p299-324, 26p

Subject Terms: Flood damage prevention, Geographic information systems, Hydraulic models, Canyons

Geographic Terms: Bosnia & Herzegovina

Exceptional Backwater Effects on Wedge Storages and Flood Stages in a Large River-Type Reservoir: HEC-RAS Modeling of Feilaixia Gorge in the North River, South China.

Authors: Zhong, Zhiwei, Wang, Xianwei, He, Yong, Cai, Silong, Tong, Hongfu

Source: Water (20734441); May2025, Vol. 17 Issue 10, p1447, 21p

Subject Terms: Water storage, Backwater, Watersheds, Floods, Gorges

Flood analysis using HEC-RAS 1D model for the delta of Brahmani river, Odisha, India.

Authors: Samal, Padminee, Swain, Prakash Chandra, Samantaray, Sandeep

Source: Natural Hazards; Apr2025, Vol. 121 Issue 7, p7941-7966, 26p

Subject Terms: Flood risk, Earth sciences, Water levels, Flow velocity, Physical geography, Embankments

Analyzing sedimentation patterns in the Naumure Multipurpose Project (NMP) reservoir using 1D HEC-RAS modeling.

Authors: Dahal, Vishan, Kunwar, Subash, Bhandari, Shishir, Chaudhary, Subash, Gautam, Saurab, Bhatt, Nabin, Regmi, Ram Krishna

Source: Scientific Reports; 9/27/2024, Vol. 14 Issue 1, p1-12, 12p

Subject Terms: Sedimentation & deposition, Earth dams, Flood control, Reservoir sedimentation, Transport equation, Sediment transport

Effect of topographic data, geometric configuration and modeling approach on flood inundation mapping

Authors: Cook, Aaron ¹, Merwade, Venkatesh ^⁎

Source: In Journal of Hydrology 2009 377(1):131-142

Sustainable Hydraulic Design of Water Structures Through Optimal Technical Pairing of Upstream Wing-Wall Geometry and Canal Inside Slopes: HEC-RAS Numerical Investigation.

Authors: Ashour, Mohamed A., Abu-Zaid, Tarek S., Ali, M. Khairy, Abueleyon, Haitham M., Abdou, Abdallah A.

Source: Sustainability (2071-1050); Aug2026, Vol. 18 Issue 16, p8552, 31p

Salinity Intrusion Prediction in the Estuary Using Machine Learning: Vietnam's Mekong Delta Tested for Global Study.

Authors: Nguyen, Huu Duy

Source: Iranian Journal of Science & Technology: Transactions of Civil Engineering; Aug2026, Vol. 50 Issue 4, p4305-4323, 19p

Subject Terms: Water salinization, Machine learning, Ensemble learning, Estuary management, Long short-term memory, Recurrent neural networks, Saltwater encroachment

Geographic Terms: Vietnam, Mekong River

Large floods on the lower Ohio River inferred from slackwater deposits.

Authors: Wiman, Charlotte¹ (AUTHOR) wiman.c@northeastern.edu, Harden, Tessa² (AUTHOR), Shen, Zhixiong³ (AUTHOR), Curry, B. Brandon⁴ (AUTHOR), Reinders, Joeri B⁵ (AUTHOR), Beighley, R. Edward⁶ (AUTHOR), Muñoz, Samuel E⁷ (AUTHOR)

Source: Progress in Physical Geography: Earth & Environment. Feb2024, Vol. 48 Issue 1, p79-95. 17p.

Subject Terms: *Optically stimulated luminescence, *Historic sites, *Rock texture, *Caves, *Historical source material, *Flood risk, *Paleohydrology

Geographic Terms: Louisville (Ky.)

Assessment of Long-Term Impact of Floods on Electricity Transmission Infrastructure: A Case Study in the Tinguiririca River Basin in Central Chile.

Authors: Valdés-Pineda, Rodrigo, González-Leiva, Fernando, Valdés, Juan B., Peredo, Felipe Pérez, Villalobos, Omar, Pizarro, Abraham, Camiroaga, Mauricio Vera

Source: Journal of Water Management Modeling; 7/17/2026, p1-40, 40p

Subject Terms: Electric power transmission, Flood risk, Flood damage, Climate change adaptation, Hydrogeological modeling, Infrastructure (Economics), Digital elevation models, Watersheds

Geographic Terms: Chile

Assessing flood risks in an urbanizing floodplain adjoining the megacity Dhaka in Bangladesh considering land use and socioeconomic changes.

Authors: Hossain, Md. Irfan, Biswas, Subir, Mondal, M. Shahjahan

Source: Discover Geoscience; 5/25/2026, Vol. 4 Issue 1, p1-23, 23p

Subject Terms: Flood risk, Floodplains, Socioeconomics, Land use, Analytic hierarchy process, Socioeconomic factors, Climate change, Urbanization, Risk assessment, Megalopolis, Floodplain management

Geographic Terms: Bangladesh, Dhaka (Bangladesh)

Influence of DEM Spatial Resolution on the Accuracy and Computational Efficiency of HEC-RAS 1D and 2D Flood Inundation Modelling: A Case Study of the Cimanceuri Basin, Indonesia.

Authors: Fikri, Rijal Muhammad, Herawati, Henny, Pranoto, Wati Asriningsih

Source: Water (20734441); May2026, Vol. 18 Issue 10, p1203, 24p

Subject Terms: Spatial resolution, Hydraulic models, Laser altimeters, Digital elevation models, Flood forecasting, Mathematical optimization, Open-channel flow, Floods

Geographic Terms: Indonesia