Hydraulic · Hydrologic · Flood
Delta Engineering turns terrain, rainfall and river data into calibrated models and clear reports — the technical, hydraulic, hydrologic and flood studies that infrastructure and permits are built on.
Delta Engineering is a water-engineering practice. Hydraulic, hydrologic and flood work is all we do — not a sideline to a general civil team, but the whole of our craft.
Every study we hand over rests on a model we can defend: calibrated against real gauged flows, stress-tested across return periods, and documented so a reviewing authority can trace each number back to the rainfall that produced it. We work with municipalities, developers and consultancies — from a single culvert check to basin-wide flood-risk mapping.
Before a single equation, we read the channel — its floodplains, its banks, the low-flow thalweg, and the water levels reached at each return period. This is how we see a river.
Rainfall becomes runoff, runoff becomes flow, flow becomes flood. We work the whole chain — so the numbers in the flood map trace back to the storm that made them.
Feasibility, hydraulic design and drainage infrastructure — culverts, bridges, detention and stormwater networks — documented to permitting and construction standard.
1D and 2D open-channel and floodplain modelling — backwater profiles, bridge and culvert hydraulics, scour and rating curves, calibrated to gauged flows.
Watershed modelling from rainfall to peak discharge — design storms, rainfall-runoff transformation, return-period hydrographs and catchment characterisation.
Floodplain delineation and inundation mapping, flood-risk assessment to the EU Floods Directive and FEMA practice, and mitigation — channels, levees, storage and diversion.
Design and analysis of potable water networks — hydraulic modelling of pipes, pumps, tanks and pressure zones, demand allocation, and leakage and resilience assessment.
Hydraulic and hydrologic design of dams and reservoirs — spillway and outlet capacity, reservoir flood routing, freeboard, and dam-break assessment for embankment and concrete structures.
A sequence, not a menu — each stage feeds the next, and the model stays traceable from field measurement to final map.
Topographic and bathymetric survey, control networks, plus gauge and rainfall records to anchor the model in real ground.
Construct coupled hydrologic and 1D/2D hydraulic models, then calibrate against observed floods and gauged discharge.
Run design storms and return periods, test sensitivity and climate factors, and quantify uncertainty in the results.
Deliver maps, profiles and a signed technical report to the standard the reviewing authority requires.
Send the site, the study you need and any survey or gauge data you hold. We'll come back with a scope, a method and a timeline.