Gordon Gilja
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View article: Water surface slope variation in Vidrice polder resulting from pumping operation
Water surface slope variation in Vidrice polder resulting from pumping operation Open
Surface drainage system within the polder is designed to collect internal inflow, resultingfrom rainfall, and external inflow, resulting from sea water infiltration, that gravitates intothe canal network. Excess water that impedes agricult…
View article: Morphodynamic assessment of the Sava River’s critical navigational section
Morphodynamic assessment of the Sava River’s critical navigational section Open
Waterways can become underutilized transport potential because of riverbed degradation and reduction of low flows driven by the climate change. Long-term changes of river’s morphology are driven by sediment supply that is intensified…
View article: Variation of the flow field over the scour hole
Variation of the flow field over the scour hole Open
Local scour next to hydraulic structures is a common occurrence resulting from the interaction of the local flow field with the erodible riverbed. Scour depth estimation is the basis for the hydraulic design of bridges, water intakes, flow…
View article: Survey on The Challenges for Achieving SDG 6: Clean Water and Sanitation: A Global Insight
Survey on The Challenges for Achieving SDG 6: Clean Water and Sanitation: A Global Insight Open
Achieving the Sustainable Development goal 6 (SDG 6) remains a significant challenge, especially in developing countries where limitation of resources, inadequate infrastructures and environmental pressures are widespread. This review pape…
View article: Transport of Floating Plastics through the Fluvial Vector: The Impact of Riparian Zones
Transport of Floating Plastics through the Fluvial Vector: The Impact of Riparian Zones Open
This study presents results from an experimental campaign to explore how different riparian zone characteristics may facilitate the transport or capturing of plastics floating through the fluvial system. Specifically, following field obser…
View article: Typical design hydrograph method based on a joint distribution approach combining flood peak discharge, volume and duration
Typical design hydrograph method based on a joint distribution approach combining flood peak discharge, volume and duration Open
Determination of flood magnitude and shape characteristics are necessary to provide a more complete assessment of flood severity and its impact in scour development analysis. Our recent research has focused on a joint distribution approach…
View article: Change in flow field next to riprap sloping structure caused by variability of scoured bathymetry
Change in flow field next to riprap sloping structure caused by variability of scoured bathymetry Open
One approach to scour protection for bridge piers is constructing riprap sloping structure around the pier. To maintain its designated function, riprap must remain stable throughout the service life of the bridge, often exceeding 100 years…
View article: Temporal development of the scour hole next to the riprap sloping structure
Temporal development of the scour hole next to the riprap sloping structure Open
Riprap sloping structure is effective as bridge pier scour protection in the immediate vicinity of piers. In turn, riprap disrupts the flow conditions in a larger area than is the case with piers without scour protection in place. While th…
View article: A Laboratory Study of the Role of Nature-Based Solutions in Improving Flash Flooding Resilience in Hilly Terrains
A Laboratory Study of the Role of Nature-Based Solutions in Improving Flash Flooding Resilience in Hilly Terrains Open
Nature-based solutions (NBSs) always provide optimal opportunities for researchers and policymakers to develop sustainable and long-term solutions for mitigating the impacts of flooding. Computing the hydrological process in hilly areas is…
View article: Utilization of Plastic Waste in Road Paver Blocks as a Construction Material
Utilization of Plastic Waste in Road Paver Blocks as a Construction Material Open
India is confronted with the substantial issue of plastic debris due to the absence of an efficient waste management infrastructure. Recycled plastic has the potential to enhance various construction materials, such as roofing tiles, pavin…
View article: Analysis of the Distance between the Measured and Assumed Location of a Point Source of Pollution in Groundwater as a Function of the Variance of the Estimation Error
Analysis of the Distance between the Measured and Assumed Location of a Point Source of Pollution in Groundwater as a Function of the Variance of the Estimation Error Open
The localization of pollution sources is one of the main tasks in environmental engineering. For this paper, models of spatial distribution of nitrate concentration in groundwater were created, and the point of highest concentration was de…
View article: Integration of High-Accuracy Geospatial Data and Machine Learning Approaches for Soil Erosion Susceptibility Mapping in the Mediterranean Region: A Case Study of the Macta Basin, Algeria
Integration of High-Accuracy Geospatial Data and Machine Learning Approaches for Soil Erosion Susceptibility Mapping in the Mediterranean Region: A Case Study of the Macta Basin, Algeria Open
Erosion can have a negative impact on the agricultural sustainability and grazing lands in the Mediterranean area, especially in northern Algeria. It is useful to map the spatial occurrence of erosion and identify susceptible erodible area…
View article: Calibration and Verification of Operation Parameters for an Array of Vectrino Profilers Configured for Turbulent Flow Field Measurement around Bridge Piers—Part II
Calibration and Verification of Operation Parameters for an Array of Vectrino Profilers Configured for Turbulent Flow Field Measurement around Bridge Piers—Part II Open
High-frequency velocimeters used for flow measurements during laboratory experiments allow the user to select the range for several operation parameters to set up the instrument for optimal velocity measurement. The discrepancies between v…
View article: Analysis of Variables Influencing Scour on Large Sand-Bed Rivers Conducted Using Field Data
Analysis of Variables Influencing Scour on Large Sand-Bed Rivers Conducted Using Field Data Open
Throughout the lifespan of a bridge, morphological changes in the riverbed affect the variable action-imposed loads on the structure. This emphasizes the need for accurate and reliable data that can be used in model-based projections targe…
View article: Reconstruction of Recharge and Discharge Pattern in the Polder Drainage Canal Network
Reconstruction of Recharge and Discharge Pattern in the Polder Drainage Canal Network Open
Rainfed agriculture is dependent on rainfall and runoff patterns, especially in lowland areas that rely on pumping operation to remove excess water from the drainage network. Polder areas are extremely vulnerable to saltwater intrusion and…
View article: Flow pattern around the bridge piers with installed scour countermeasures
Flow pattern around the bridge piers with installed scour countermeasures Open
Bridges with elements interacting the flow, such as piers constructed in the main river channel or approach embankments blocking the overbanks, alter the flow conditions and initiate local and contraction scour in the bridge profile. Scour…
View article: Experimental study of turbulent kinetic energy of flow over scoured riverbed
Experimental study of turbulent kinetic energy of flow over scoured riverbed Open
Rapid development of the instantaneous flow velocity instruments allows for high frequency measurement of turbulent flow field in the hydraulic flume. To obtain accurate and reliable flow measurement it is necessary to correctly configure …
View article: Simulation of equilibrium scour hole development around riprap sloping structure using the numerical model
Simulation of equilibrium scour hole development around riprap sloping structure using the numerical model Open
This paper investigates effect of scour adjacent to the bridge piers with installed riprap as the scour countermeasure. A riprap sloping structure is a conical placement of launchable stones around the bridge pier commonly used as erosion …
View article: Advanced Continuous Monitoring System—Tools for Water Resource Management and Decision Support System in Salt Affected Delta
Advanced Continuous Monitoring System—Tools for Water Resource Management and Decision Support System in Salt Affected Delta Open
The greatest environmental problem facing the world today is climate change, with a rise in sea level being one of the most important consequences, especially in low-lying coastal areas, such as river deltas where changes are exacerbated b…
View article: Calibration and Verification of Operation Parameters for an Array of Vectrino Profilers Configured for Turbulent Flow Field Measurement around Bridge Piers—Part I
Calibration and Verification of Operation Parameters for an Array of Vectrino Profilers Configured for Turbulent Flow Field Measurement around Bridge Piers—Part I Open
Flow mapping around bridge piers is crucial in estimating scour development potential under different flow conditions. The reliable measurement of turbulence and the estimation of Reynolds stress can be achieved on scaled models under cont…
View article: Assessing Riverbed Surface Destabilization Risk Downstream Isolated Vegetation Elements
Assessing Riverbed Surface Destabilization Risk Downstream Isolated Vegetation Elements Open
A few decades ago, river erosion protective approaches were widely implemented, such as straightening the river course, enhancing riverbed/bank stability with layers of concrete or riprap, and increasing channel conveyance capacity (i.e., …
View article: Verification of the pier scour development in the experimental environment
Verification of the pier scour development in the experimental environment Open
<p>Experiments conducted in the hydraulic flume provide a controlled flow environment, which often provides means for prompt qualitative investigation of general flow structure. Under the R3PEAT project (www.grad.hr/r3peat), research…
View article: Determination of the appropriate baseflow separation method for gauging stations on the two lowland rivers in Croatia
Determination of the appropriate baseflow separation method for gauging stations on the two lowland rivers in Croatia Open
<p>The estimation of baseflow is one of the essential tasks in water resources management and hydrologic research to assess the impacts of climate change and to describe and predict flood events based on the flood hydrograph characte…
View article: Evaluation of riprap failure impact on the downstream scour hole
Evaluation of riprap failure impact on the downstream scour hole Open
<p>Scouring around bridge piers is considered to be a significant process in rivers because it can alter bridge loading and consequently its stability. Riprap is often deployed as scour countermeasure, and while it does protect the p…
View article: Scour at Bridge Piers Protected by the Riprap Sloping Structure: A Review
Scour at Bridge Piers Protected by the Riprap Sloping Structure: A Review Open
Bridge piers on large rivers are often protected from scouring using launchable stone, such as a riprap sloping structure. While such scour countermeasures are effective for pier protection, they significantly alter flow conditions in the …
View article: Experimental Investigation of the Reynolds Shear Stress Exceedance Rate for the Injury and Disorientation Biocriteria Boundary in the Pool-Orifice and Vertical Slot Type Fishways
Experimental Investigation of the Reynolds Shear Stress Exceedance Rate for the Injury and Disorientation Biocriteria Boundary in the Pool-Orifice and Vertical Slot Type Fishways Open
Fragmentation of rivers has a negative impact on river’s ecological status which can be improved by the construction of fishways next to obstacles in rivers that prevent a free migration. Flow field characteristics are key factors in the d…
View article: DrainCAN—A MATLAB Function for Generation of a HEC-RAS-Compatible Drainage Canal Network Model
DrainCAN—A MATLAB Function for Generation of a HEC-RAS-Compatible Drainage Canal Network Model Open
The dimensioning of canal geometry in a surface drainage network influences the size and functionality of canal structures, reduces flood hazard, and consequently imposes restrictions on land use. Reliable free-surface flow calculation for…
View article: The analysis of streamflow variability and flood wave characteristics on the two lowland rivers in Croatia
The analysis of streamflow variability and flood wave characteristics on the two lowland rivers in Croatia Open
<p>Climate changes affect streamflow variability on the long-term and short-term temporal scale. Consequently, analysis of changes in hydrological regime, but also in intensity and frequency of short-time flood events, enables better…