HS1.1.2 – Frontiers in river flow monitoring: hydrologic extremes, complex flows, unstable sites, uncertainties

HS1.1.3 – Innovative methods for monitoring of hydrological processes from field to catchment scale (co-organized)

HS1.2.1 – The Science-policy interface in hydrology – essentials for more impactful science (co-organized)

HS1.2.2 – Hydrology, society and environmental change: Panta Rhei (everything flows) | PICO

HS1.2.3 – History of Hydrology

HS1.2.7 – Innovative methods to facilitate open science and data analysis in hydrology - from data collection in challenging environments to data sharing, visualization and modelling (co-organized) | PICO

HS1.2.9 – Remote Sensing and Coupled Data Assimilation for Earth System Models and their Compartments (co-organized)

HS1.2.10 – Hydrologic Dynamics, Analytics and Predictability: Physical and Data-based Approaches for Improving Hydrologic Understanding and Prediction (co-organized)

HS1.2.11 – Advances in Inference, Sensitivity, and Uncertainty Analysis of Earth and Environmental Systems Models

HS2.1.2 – Snow and ice accumulation, melt, and runoff generation in catchment hydrology: monitoring and modelling (co-organized)

HS2.1.6 – Changes in the Mediterranean hydrology: observation and modeling

HS2.1.9 – Hydrology, hydrogeology and soil-plant-atmosphere interactions in the Tropics

HS2.2.1 – Isotope and tracer methods: flow paths characterization, catchment response and transformation processes

HS2.2.3 – Hydrological connectivity: linking surface and subsurface flow | PICO

HS2.2.4 – From observations to models - journey of model development

HS2.3.1 – Micropollutants in the soil-groundwater-river continuum: modelling, monitoring and remediation strategies

HS2.3.2 – Water quality at the catchment scale: measuring and modelling of nutrients, sediment and eutrophication impacts

HS2.3.3 – Identification of agro-contaminants in surface and groundwater using stable isotope techniques

HS2.3.4 – Sources, transport and fate of contaminants in mining-impacted river catchments

HS2.3.5 – The application of Bayesian approaches in water quality modelling | PICO

HS2.3.6 – Data-driven analysis of water quality time series to understand solute and particulate export mechanisms in catchments

HS2.4.1 – Hydrological extremes: from droughts to floods

HS2.4.2 – Space-time dynamics of floods: processes, controls, and risk

HS2.4.4 – Using transit times and hydrological patterns to understand hydrochemical and hydrologic behavior

HS2.4.5 – Hydrological change: Regional hydrological behaviour under transient climate and land use conditions

HS2.4.6 – Challenges understanding the links between hydrological variability and large-scale climate variations in a changing climate and environment

HS2.5.1 – Large scale hydrology

HS2.5.2 – Large-sample hydrology: characterising and understanding hydrological diversity | PICO

HS2.5.3 – Recent advancement in estimating global, continental and regional scale water balance components | PICO

HS3.1 – Hydroinformatics: computational intelligence, systems analysis, optimisation, data science, high-performance computing

HS3.2 – Spatio-temporal and/or (geo)statistical analysis of hydrological events, floods, extremes, and related hazards

HS3.3 – Innovative sensing techniques for water monitoring, modelling, and management: Satellites, gauges and citizens

HS4.1.1 – Drought and water scarcity: monitoring, modelling and forecasting to improve hydro-meteorological risk management (co-organized)

HS4.1.2 – From sub-seasonal forecasting to climate projections: predicting hydrologic extremes and servicing water managers (co-organized)

HS4.1.3 – Flash floods and associated hydro-geomorphic processes: observation, modelling and warning (co-organized)

HS4.2.1 – Ensemble hydro-meteorological forecasting (co-sponsored by HEPEX) (co-organized)

HS4.2.2 – Reducing predictive uncertainty and data assimilation techniques for hydrological forecasting (co-organized)

HS4.3.1 – Operational forecasting and warning systems for natural hazards: challenges and innovation (co-organized) | PICO

HS5.1.1 – Water resources policy, management, and society: transdisciplinary approaches to urban-rural water systems | PICO

HS5.1.2 – Nature Based Solutions for hydrological extremes and water resource management (co-organized)

HS5.1.3 – Water resources - assessment, management, and allocation - in (semi-)arid regions

HS5.2.1 – Water resources policy and management - Systems solutions in an uncertain world

HS5.2.2 – Advances in Socio-Hydrology (including HS Division Outstanding ECS Lecture by Serena Ceola)

HS5.3.1 – Advances in modeling and control of environmental systems: from drainage and irrigation to hybrid energy generation (co-organized)

HS5.3.2 – Water resources policy and management - forecast and control methods

HS5.4.2 – Hydropower and other renewable energy sources: Integration and Planning amid the Water-Energy Nexus (co-organized)

HS5.4.3 – Integrated Assessment of water – food – energy nexuses (co-organized)

HS5.5.1 – Assessment and interpretation of state and trends in water quality

HS6.3 – Remote Sensing for Flood Dynamics Monitoring, Water Level, Storage and Discharge (co-organized)

HS6.4 – Remote sensing of soil moisture

HS6.5 – Estimating evapotranspiration in extreme and sensitive environments using remote sensing, ground data and models (co-organized)

HS6.7 – Remote sensing of interactions between vegetation and hydrology (co-organized) | PICO

HS6.8 – Issues, limits and solutions for using drone data in the Geosciences (co-organized)

HS7.1 – Precipitation measurement: techniques, processes and hydrological applications at the catchment scale (co-organized)

HS7.2 – Precipitation Modelling: uncertainty, variability, assimilation, ensemble simulation and downscaling (co-organized)

HS7.3 – Water, Climate, Food and Health (co-organized) | PICO

HS7.4 – Hydroclimatic change and unchange: exploring the mysteries of variability, nature and human impact (co-sponsored by IAHS and WMO) (co-organized)

HS7.5 – Precipitation induced hazards: Vulnerability, Risk, Impacts and Mitigation (co-organized)

HS7.6 – Precipitation variability from drop scale to lot scale and the atmospheric water cycle: feedbacks, management and land-use change (co-organized) | PICO

HS7.7 – Hydroclimatic and hydrometeorologic stochastics: Extremes, scales, probabilities (co-sponsored by IAHS-ICSH) (co-organized) | PICO

HS7.8 – Precipitation and Urban Hydrology (co-organized)

HS8.1.1 – From pore to field scale: Modern challenges and Innovative Methods in Subsurface Hydrology

HS8.1.4 – Subsurface flow and solute transport: Concepts, modelling, observations and applications of dispersion, mixing and reactive transport in heterogeneous media.

HS8.1.6 – Emerging particles and biocolloids in terrestrial and aquatic systems

HS8.1.7 – Reactive transport, mineral dissolution and precipitation in fractured and porous rock: experiments, models and field observations

HS8.1.8 – Subsurface flow: From innovative experimental approaches to process modelling

HS8.1.9 – Hydrogeophysics: an tool for hydrology, ecology, agronomy and beyond | PICO

HS8.2.1 – Sustainability and adaptive management of groundwater resources in a changing environment

HS8.2.2 – Fissured and karstified aquifers

HS8.2.3 – Thermal processes and energy storage in porous and fractured aquifers (co-organized)

HS8.2.4 – GROUNDWATER FLOW UNDERSTANDING IN WATER MANAGEMENT AND ENVIRONMENTAL PROBLEMS

HS8.2.5 – Hydrogeology of coastal zones: processes, consequences and potentials

HS8.2.7 – Urban groundwater: a strategic resource | PICO

HS8.3.3 – Land surface and vadose zone process modeling – local and global challenges (co-organized)

HS8.3.6 – Soil moisture and soil--water constitutive laws, measurement and comprehension of their environmental effects (co-organized)

HS8.3.8 – Soil-root interactions (co-organized)

HS8.3.9 – Soil hydrology and irrigation in arid environments (co-organized)

HS9.1.1 – Measurements, monitoring and modelling of hydro-morphological processes in open-water environments (co-organized)

HS9.1.2 – Techniques for quantifying the sources and the dynamics of sediment in river catchments across a range of spatial and temporal scales (co-organized)

HS9.1.3 – Transfer of sediments and contaminants in catchments, rivers systems and lakes

HS9.1.4 – Investigation of sediment transport processes due to geophysical flows (co-organized)

HS10.1 – Lakes and inland seas in a changing environment

HS10.2 – Integrative studies of the River-Sea-Continuum (co-organized)

HS10.3 – General Ecohydrology

HS10.4 – Evapotranspiration: in-situ measurements and the upscaling challenge

HS10.6 – Water, isotope and solute fluxes in the soil-plant-atmosphere interface: Investigations from the canopy to the root zone (co-organized)

HS10.7 – Peatland Hydrology

HS10.8 – Groundwater - Surface Water Interactions: Physical, Biogeochemical and Ecological processes (co-organized)