Hydrologic Modeling
Expert-defined terms from the Professional Certificate in Hydraulic and Water Resources Engineering course at Stanmore School of Business. Free to read, free to share, paired with a globally recognised certification pathway.
Abstraction refers to the process of simplifying complex hydrologic systems into… #
Related terms include conceptual models, empirical models, and physical models. Abstraction is crucial in hydrologic modeling as it enables the development of accurate and reliable models that can be used for predictive and analytical purposes.
Absolute Humidity is the total amount of water vapor present in a given volume o… #
Related terms include relative humidity, specific humidity, and vapor pressure. Absolute humidity is an essential component of hydrologic modeling, particularly in the context of evapotranspiration and precipitation processes.
Advection refers to the process by which water or other substances are transport… #
Related terms include convection, diffusion, and dispersion. Advection is a critical component of hydrologic modeling, particularly in the context of streamflow and groundwater flow.
Aerial Photography is the practice of taking photographs of the Earth's surface… #
Related terms include remote sensing, photogrammetry, and geographic information systems. Aerial photography is a valuable tool in hydrologic modeling, particularly in the context of watershed and floodplain analysis.
Algorithm refers to a set of rules or procedures used to solve a specific proble… #
Related terms include models, simulations, and software. Algorithms are essential in hydrologic modeling, particularly in the context of numerical and analytical solutions.
Anisotropy refers to the property of a material or system having different prope… #
Related terms include heterogeneity, isotropy, and tensor analysis. Anisotropy is a critical component of hydrologic modeling, particularly in the context of groundwater flow and contaminant transport.
Aquifer refers to a geological formation that stores and transmits significant a… #
Related terms include aquitard, aquiclude, and groundwater flow. Aquifers are essential components of hydrologic systems, particularly in the context of water supply and irrigation.
Aquifer Testing refers to the practice of evaluating the hydraulic properties of… #
Related terms include pumping tests, slug tests, and tracer tests. Aquifer testing is a critical component of hydrologic modeling, particularly in the context of groundwater resource management and contaminant remediation.
Artificial Neural Networks refer to a type of machine learning algorithm inspire… #
Related terms include deep learning, machine learning, and data mining. Artificial neural networks are a valuable tool in hydrologic modeling, particularly in the context of time series analysis and pattern recognition.
Autocorrelation refers to the statistical relationship between a variable and it… #
Related terms include cross-correlation, spectral analysis, and time series analysis. Autocorrelation is a critical component of hydrologic modeling, particularly in the context of streamflow and precipitation analysis.
Baseflow refers to the component of streamflow that is derived from groundwater… #
Related terms include surface flow, interflow, and groundwater flow. Baseflow is an essential component of hydrologic systems, particularly in the context of water quality and ecosystem health.
Bias refers to a systematic error or distortion in a model or dataset, often enc… #
Related terms include accuracy, precision, and uncertainty. Bias is a critical component of hydrologic modeling, particularly in the context of model evaluation and validation.
Calibration refers to the process of adjusting model parameters to match observe… #
Related terms include validation, verification, and sensitivity analysis. Calibration is an essential component of hydrologic modeling, particularly in the context of model development and application.
Catchment refers to a geographical area that drains water into a common outlet,… #
Related terms include watershed, basin, and drainage area. Catchments are critical components of hydrologic systems, particularly in the context of water resource management and flood control.
Channel Geometry refers to the physical characteristics of a stream or river cha… #
Related terms include channel roughness, channel slope, and channel cross-section. Channel geometry is a critical component of hydrologic modeling, particularly in the context of streamflow and sediment transport.
Climate Change refers to the long #
term warming of the planet due to an increase in average global temperatures, often encountered in hydrologic modeling in the context of impacts and adaptation. Related terms include global warming, greenhouse effect, and climate variability. Climate change is a critical component of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Conditional Probability refers to the probability of an event occurring given th… #
Related terms include joint probability, marginal probability, and Bayesian analysis. Conditional probability is a valuable tool in hydrologic modeling, particularly in the context of uncertainty analysis and risk assessment.
Conductivity refers to the ability of a material to transmit heat, electricity,… #
Related terms include permeability, transmissivity, and hydraulic conductivity. Conductivity is a critical component of hydrologic modeling, particularly in the context of groundwater flow and contaminant transport.
Conservation of Mass refers to the principle that mass cannot be created or dest… #
Related terms include continuity equation, mass balance, and energy conservation. Conservation of mass is a fundamental principle of hydrologic modeling, particularly in the context of water balance and budget analysis.
Contaminant Transport refers to the movement of pollutants or contaminants throu… #
Related terms include advection, diffusion, and dispersion. Contaminant transport is a critical component of hydrologic modeling, particularly in the context of groundwater remediation and water treatment.
Convolution refers to the process of combining two or more functions to produce… #
Related terms include Fourier analysis, Laplace transform, and impulse response. Convolution is a valuable tool in hydrologic modeling, particularly in the context of time series analysis and signal processing.
Data Assimilation refers to the process of combining model outputs with observat… #
Related terms include model calibration, parameter estimation, and uncertainty analysis. Data assimilation is a critical component of hydrologic modeling, particularly in the context of real-time forecasting and decision support.
Diffusion refers to the process by which particles or substances move from an ar… #
Related terms include advection, dispersion, and Fick's law. Diffusion is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Digital Elevation Model refers to a digital representation of the Earth's surfac… #
Related terms include geographic information systems, remote sensing, and terrain analysis. Digital elevation models are a valuable tool in hydrologic modeling, particularly in the context of watershed and floodplain analysis.
Discharge refers to the volume of water flowing through a given cross #
sectional area per unit time, often used in hydrologic modeling to simulate and predict streamflow behavior. Related terms include flow rate, velocity, and water level. Discharge is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Dispersion refers to the process by which particles or substances spread out or… #
Related terms include advection, diffusion, and mixing. Dispersion is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Drainage Area refers to the geographical area that drains water into a common ou… #
Related terms include catchment, basin, and watershed. Drainage areas are critical components of hydrologic systems, particularly in the context of water resource management and flood control.
Drought refers to a prolonged period of abnormally low rainfall, often encounter… #
Related terms include drought index, drought severity, and water conservation. Drought is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Ecosystem refers to a community of living organisms and their physical environme… #
Related terms include ecology, biodiversity, and conservation. Ecosystems are critical components of hydrologic systems, particularly in the context of water resource management and environmental sustainability.
Evapotranspiration refers to the process by which plants release water vapor int… #
Related terms include transpiration, evaporation, and infiltration. Evapotranspiration is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Flood Control refers to the practice of managing and mitigating the effects of f… #
Related terms include floodplain management, flood forecasting, and flood warning. Flood control is a critical component of hydrologic modeling, particularly in the context of water resource management and urban planning.
Flood Frequency Analysis refers to the practice of analyzing and predicting the… #
Related terms include flood frequency curve, flood recurrence interval, and flood probability. Flood frequency analysis is a critical component of hydrologic modeling, particularly in the context of flood control and water resource management.
Floodplain refers to the flat or low #
lying area adjacent to a stream or river that is prone to flooding, often encountered in hydrologic modeling in the context of flood risk assessment and flood protection. Related terms include floodplain management, flood control, and wetlands. Floodplains are critical components of hydrologic systems, particularly in the context of water resource management and ecosystem health.
Flow Duration Curve refers to a graphical representation of the relationship bet… #
Related terms include flow frequency curve, flow recurrence interval, and flow probability. Flow duration curves are a valuable tool in hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Geographic Information Systems refer to a type of software used to capture, stor… #
Related terms include remote sensing, digital elevation models, and spatial analysis. Geographic information systems are a critical component of hydrologic modeling, particularly in the context of watershed and floodplain analysis.
Geostatistics refers to the branch of statistics that deals with the analysis an… #
Related terms include spatial analysis, autocorrelation, and kriging. Geostatistics is a valuable tool in hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Groundwater refers to the water stored beneath the Earth's surface in soil and r… #
Related terms include aquifer, aquitard, and groundwater flow. Groundwater is a critical component of hydrologic systems, particularly in the context of water supply and irrigation.
Groundwater Flow refers to the movement of water through the saturated zone of a… #
Related terms include Darcy's law, hydraulic conductivity, and groundwater balance. Groundwater flow is a critical component of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Hydraulic Conductivity refers to the ability of a material to transmit water, of… #
Related terms include permeability, transmissivity, and conductivity. Hydraulic conductivity is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Hydrograph refers to a graphical representation of the relationship between stre… #
Related terms include flow duration curve, flow frequency curve, and recession curve. Hydrographs are a valuable tool in hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Hydrologic Cycle refers to the continuous process by which water is circulated b… #
Related terms include evaporation, condensation, and precipitation. The hydrologic cycle is a fundamental principle of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Hydrologic Modeling refers to the practice of using mathematical models to simul… #
Related terms include simulation, prediction, and forecasting. Hydrologic modeling is a critical component of hydrologic systems, particularly in the context of water resource management and environmental sustainability.
Infiltration refers to the process by which water enters the soil and becomes pa… #
Related terms include runoff, evapotranspiration, and percolation. Infiltration is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Interflow refers to the movement of water through the unsaturated zone of a hydr… #
Related terms include infiltration, percolation, and groundwater flow. Interflow is a critical component of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Irrigation refers to the practice of applying water to crops or plants to suppor… #
Related terms include water supply, crop yield, and water conservation. Irrigation is a critical component of hydrologic systems, particularly in the context of water resource management and food security.
Kalman Filter refers to a type of mathematical algorithm used to estimate the st… #
Related terms include data assimilation, model calibration, and uncertainty analysis. The Kalman filter is a valuable tool in hydrologic modeling, particularly in the context of real-time forecasting and decision support.
Kriging refers to a type of geostatistical method used to estimate the value of… #
Related terms include spatial analysis, autocorrelation, and geostatistics. Kriging is a valuable tool in hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Lag Time refers to the time delay between the occurrence of a precipitation even… #
Related terms include time of concentration, travel time, and recession curve. Lag time is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Linear Reservoir refers to a type of mathematical model used to simulate the beh… #
Related terms include nonlinear reservoir, conceptual model, and empirical model. Linear reservoirs are a valuable tool in hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Manning's Equation refers to a type of mathematical equation used to calculate t… #
Related terms include Chezy's equation, Darcy's law, and hydraulic conductivity. Manning's equation is a critical component of hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Mass Balance refers to the principle that the total mass of a system remains con… #
Related terms include conservation of mass, continuity equation, and energy conservation. Mass balance is a fundamental principle of hydrologic modeling, particularly in the context of water balance and budget analysis.
Model Calibration refers to the process of adjusting model parameters to match o… #
Related terms include model validation, model verification, and sensitivity analysis. Model calibration is a critical component of hydrologic modeling, particularly in the context of model development and application.
Model Verification refers to the process of evaluating the accuracy and reliabil… #
Related terms include model calibration, model validation, and sensitivity analysis. Model verification is a critical component of hydrologic modeling, particularly in the context of model development and application.
Nonlinear Reservoir refers to a type of mathematical model used to simulate the… #
Related terms include linear reservoir, conceptual model, and empirical model. Nonlinear reservoirs are a valuable tool in hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Numerical Methods refer to a type of mathematical technique used to solve comple… #
Related terms include finite difference method, finite element method, and numerical analysis. Numerical methods are a critical component of hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Overland Flow refers to the movement of water over the land surface, often encou… #
Related terms include runoff, infiltration, and interflow. Overland flow is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Parameter Estimation refers to the process of determining the values of model pa… #
Parameter estimation is a critical component of hydrologic modeling, particularly in the context of model development and application.
Percolation refers to the process by which water moves through the soil and beco… #
Related terms include infiltration, runoff, and interflow. Percolation is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Permeability refers to the ability of a material to transmit water, often encoun… #
Related terms include hydraulic conductivity, transmissivity, and conductivity. Permeability is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Precipitation refers to the process by which water falls to the Earth's surface,… #
Related terms include rainfall, snowfall, and evapotranspiration. Precipitation is a critical component of hydrologic systems, particularly in the context of water resource management and ecosystem health.
Recession Curve refers to a graphical representation of the relationship between… #
Related terms include flow duration curve, flow frequency curve, and hydrograph. Recession curves are a valuable tool in hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Remote Sensing refers to the practice of acquiring information about the Earth's… #
Related terms include geographic information systems, digital elevation models, and spatial analysis. Remote sensing is a critical component of hydrologic modeling, particularly in the context of watershed and floodplain analysis.
Return Period refers to the average time interval between occurrences of a given… #
Related terms include flood frequency analysis, flood recurrence interval, and flood probability. Return period is a critical component of hydrologic modeling, particularly in the context of flood control and water resource management.
Runoff refers to the movement of water over the land surface, often encountered… #
Related terms include infiltration, percolation, and interflow. Runoff is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Sediment Transport refers to the movement of sediment through a hydrologic syste… #
Related terms include erosion, deposition, and sedimentation. Sediment transport is a critical component of hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Sensitivity Analysis refers to the practice of evaluating the response of a mode… #
Related terms include model calibration, model validation, and parameter estimation. Sensitivity analysis is a critical component of hydrologic modeling, particularly in the context of model development and application.
Soil Moisture refers to the amount of water stored in the soil, often encountere… #
Related terms include infiltration, percolation, and evapotranspiration. Soil moisture is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Spatial Analysis refers to the practice of analyzing and interpreting spatial da… #
Related terms include geographic information systems, remote sensing, and geostatistics. Spatial analysis is a critical component of hydrologic modeling, particularly in the context of watershed and floodplain analysis.
Specific Yield refers to the amount of water that can be extracted from a satura… #
Specific yield is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Steady #
State refers to a condition in which the input and output of a system are equal, often used in hydrologic modeling to simulate and predict complex systems. Related terms include transient state, equilibrium, and dynamic equilibrium. Steady-state is a critical component of hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Streamflow refers to the movement of water through a stream or river, often enco… #
Streamflow is a critical component of hydrologic modeling, particularly in the context of water resource management and hydroelectric power generation.
Subsurface Flow refers to the movement of water through the saturated zone of a… #
Related terms include groundwater flow, interflow, and percolation. Subsurface flow is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Surface Roughness refers to the physical characteristics of a stream or river ch… #
Related terms include channel geometry, channel slope, and channel cross-section. Surface roughness is a critical component of hydrologic modeling, particularly in the context of streamflow and sediment transport.
Time of Concentration refers to the time it takes for water to flow from the mos… #
Related terms include lag time, travel time, and recession curve. Time of concentration is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Transmissivity refers to the ability of a material to transmit water, often enco… #
Related terms include hydraulic conductivity, permeability, and conductivity. Transmissivity is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Travel Time refers to the time it takes for water to flow from one point to anot… #
Related terms include time of concentration, lag time, and recession curve. Travel time is a critical component of hydrologic modeling, particularly in the context of water resource management and flood control.
Uncertainty Analysis refers to the practice of evaluating the uncertainty associ… #
Related terms include sensitivity analysis, model calibration, and parameter estimation. Uncertainty analysis is a critical component of hydrologic modeling, particularly in the context of model development and application.
Unsaturated Flow refers to the movement of water through the unsaturated zone of… #
Unsaturated flow is a critical component of hydrologic modeling, particularly in the context of water resource management and agricultural planning.
Validation refers to the process of evaluating the accuracy and reliability of a… #
Related terms include model calibration, model verification, and sensitivity analysis. Validation is a critical component of hydrologic modeling, particularly in the context of model development and application.
Vapor Pressure refers to the pressure exerted by water vapor in the atmosphere,… #
Related terms include absolute humidity, relative humidity, and specific humidity. Vapor pressure is a critical component of hydrologic modeling, particularly in the context of water balance and budget analysis.
Watershed refers to a geographical area that drains water into a common outlet,… #
Related terms include catchment, basin, and drainage area. Watersheds are critical components of hydrologic systems, particularly in the context of water resource management and flood control.
Water Balance refers to the accounting of all the inputs and outputs of water in… #
Related terms include water budget, evapotranspiration, and infiltration. Water balance is a critical component of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Water Budget refers to the accounting of all the inputs and outputs of water in… #
Related terms include water balance, evapotranspiration, and infiltration. Water budget is a critical component of hydrologic modeling, particularly in the context of water resource management and ecosystem health.
Water Quality refers to the physical, chemical, and biological characteristics o… #
Related terms include water pollution, water treatment, and water conservation. Water quality is a critical component of hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Water Table refers to the upper surface of the saturated zone in a hydrologic sy… #
Related terms include groundwater level, water level, and piezometric surface. Water table is a critical component of hydrologic modeling, particularly in the context of groundwater flow and ecosystem health.
Wave Equation refers to a type of mathematical equation used to describe the mov… #
Related terms include diffusion equation, advection equation, and stochastic processes. Wave equation is a valuable tool in hydrologic modeling, particularly in the context of water resource management and environmental sustainability.
Wetlands refer to areas of land that are saturated with water, often encountered… #
Related terms include floodplains, riparian zones, and aquatic ecosystems.