Sheet HY · Water engineering
Understand the water before sizing the structure.
Hydrology, drainage, hydraulic structures, groundwater and irrigation.
Data usedRainfall, topography, land use, groundwater levels, pumping tests
At a glance
- For whom
- Local authorities, road and urban projects, farmers, NGOs
- Main deliverables
- Hydrological study
- Sizing notes
- Network drawings
- Hydrogeological report
- How to start
- Send the area concerned and available data.
HY-01 · Hydrology
Hydrology and catchments
The design flow sets the size of every structure. We delineate catchments, analyse rainfall and estimate flows.
- Delineation and characterisationArea, slope, thalweg, time of concentration.
- Rainfall and flow analysisIDF curves, flows by return period.
Deliverables you receive
- Hydrological report
- Catchment map
- Design flow table
HY-02 · Drainage & structures
Drainage and hydraulic structures
Storm networks, road drainage, box and pipe culverts, checked for design flow with adequate freeboard.
- Urban storm drainageDiagnosis, flood-prone areas, master plans.
- Structure sizingBox culverts, pipes, aprons, retention basins.
Deliverables you receive
Reference 1,000 m³ elevated reservoirs, 12 m high, Sèmè-Kpodji, Benin- Drainage master plan
- Sizing notes
- Reservoirs & water towers
- Network plans & profiles
- Quantities & BoQ
HY-03 · Groundwater & irrigation
Groundwater, water supply and irrigation
Siting a borehole, equipping it, establishing its safe yield, then delivering water to users or crops.
- Hydrogeological studiesGeological review, siting, drilling supervision.
- Pumping testsInterpretation, safe yield, drawdown.
- Water supply and irrigationNetworks, tanks, pumping, drip irrigation.
Deliverables you receive
Reference Hydrogeological studies, Northern gas pipeline, landfall – Gandon, Senegal- Hydrogeological report
- Siting report
- Borehole log
- Test interpretation
- Irrigation layout
A flow, drainage or water supply question?
Send us the area and available data: we will propose a method and a quote.