Veronica Vogt

I am a Graduate Flood Modeller with a strong academic foundation in environmental modelling and policy. Since joining Aegaea in 2025, I have delivered several hydraulic models and flood risk assessments.

How I can help you

• Pluvial Flood Modelling: I have completed several 2D and 1D/2D pluvial models using TUFLOW, analysing varying storm durations, return periods, and climate change scenarios to assess surface water flood risk in support of planning applications.
• Design Scenario Testing: I develop post-development hydraulic models to evaluate the flood risk implications of proposed designs, comparing results against baseline conditions to demonstrate compliance and inform design decisions.
• Sensitivity Analysis: I undertake sensitivity testing of key model parameters, including roughness, boundary conditions, and drainage loss rates, to assess model robustness and quantify uncertainty in results.
• Flood Risk Assessments: I prepare Flood Risk Assessments, Flood Risk Statements, and Flood Evacuation Plans for developments ranging from changes of use to new-build schemes, ensuring proposals meet relevant technical and planning requirements.

Expertise in action

• Elmbridge: This project involved site-specific pluvial hydraulic modelling to support a pre-planning application for the conversion of a car park undercroft into a lower-ground office, within an existing commercial building. The EA’s Risk of Flooding from Surface Water (RoFSW) dataset indicated high risk across the eastern portion of the site, with medium to low risk surrounding. The undercroft nature of the proposed use meant that understanding the behaviour of surface water on and around the site was critical. I modelled this site, building a 1m resolution 2D TUFLOW HPC model using EA LiDAR terrain data, with Sub-Grid Sampling enabled to better capture shallow flow behaviour. Climate change allowances for the catchment were applied across all design events. A key modelling decision was running the baseline without the building present, allowing flood depths within the undercroft space itself to be accurately characterised. The design model then incorporated the proposed flood resilience measures, modelled as a terrain modification to replicate the building’s performance under flood conditions. Results showed maximum on-site depths of 0.76m in the 0.1% AEP event, with flooding concentrated in the western-central area away from the proposed office entrance. Critically, the design scenario demonstrated negligible change in flood depths relative to baseline (±0.01m), with no flooding predicted within the building footprint across any simulated event.
• Melton: This project involved site-specific hydraulic modelling to support a planning application for a new residential dwelling over an existing lake, alongside reinforcement of a dam structure, sitting entirely within EA Flood Zones 2 and 3. Two complementary hydraulic models were developed. A 1D flood routing model was constructed in Flood Modeller to assess fluvial flood rise within the lake under both baseline and post-development conditions, capturing the lake geometry, inflow hydrographs and outflow structures including the existing stepped spillway and the proposed sluice gate and overspill weir. I mainly contributed to the pluvial component, building a 1D/2D TUFLOW HPC model at 2m resolution with Sub-Grid Sampling enabled to better represent shallow overland flow behaviour across the largely rural catchment. Terrain data was sourced from the EA’s 1m LiDAR DTM, supplemented by a client-provided topographic survey of the lake and upstream inlet channel. Baseline pluvial results identified partial flooding of the proposed access road across several return periods, with depths ranging from around 0.1m in the 3.3% AEP event up to 0.4m in the 0.1% AEP event, driven by two dominant overland flow pathways converging from the south and southwest. The flood routing results demonstrated that the proposed development reduces peak flood rise in the lake for the 1% AEP + CC event, well below the proposed dwelling underside.
• Southwark: This project involved site-specific pluvial hydraulic modelling for a significant mixed-use regeneration scheme in the London Borough of Southwark, comprising approximately 220 residential units alongside commercial and community uses. My role has covered the catchment delineation, hydrological assessment, and baseline model build. Working in a dense urban environment required careful interpretation of the LiDAR terrain to understand how overland flows move through the existing urban landscape, and particular attention to how the proposed development would alter those pathways. The baseline model has been completed, with design rainfall generated using ReFH2.4 across the full range of AEP events with climate change allowances appropriate to the management catchment.

A bit about me

I hold an MSc with Distinction in Environmental Modelling from University College London and a 1st Class BA in Environmental Policy & Economics from Amsterdam University College. Outside of the world of flood models, I enjoy long-distance running and baking.