Hydrological
Analysis & Modeling
Accurate rainfall-runoff calculations and catchment studies according to Global & DSİ Standards.
Expert Catchment Management
Hydrological science is the first step in understanding river behavior. Our process involves detailed spatial analysis of watersheds, historical rainfall data processing, and the application of synthetic unit hydrographs to predict future flood events.
We strictly follow the methodologies required by DSİ (State Hydraulic Works) for planning and design studies, ensuring that our calculations are robust, defensible, and ready for regulatory approval.
Rational Method
Application for small catchments (< 2.5 km²) focusing on urban peak flow rates for local drainage systems.
SCS Mockus & Snyder
Utilizing synthetic unit hydrograph techniques for complex catchment response modeling in medium to large basins.
DSİ Sentetik Method
Implementation of the official DSİ synthetic unit hydrograph method specifically tailored for Turkish geographical conditions.
Intensity-Duration-Frequency
Processing historical rainfall data to generate IDF curves for infrastructure design return periods.
Why Choose ArchSu?
DSİ Compliance
100% compliant with latest State Hydraulic Works guidelines.
15+ Years Experience
Expert hydraulic engineers managing your projects.
Guaranteed Approval
We follow up on the reports until final official approval.
Fast Turnaround
Accurate modeling and report delivery within deadlines.
Frequently Asked Questions
It is a technical report that calculates the rainfall-runoff relationship, return period flood discharges (Q10, Q50, Q100, Q500), and the hydrological regime of a basin.
Rational Method, SCS Mockus, Snyder, and DSİ Synthetic Unit Hydrograph methods are used depending on the basin size.
The authoritative and approving body for projects in Turkey is the relevant Regional Directorate of State Hydraulic Works (DSİ).