Home › Hydrology & water › IC52Rational
IC52Rational QGIS 4 compatibility
QGIS 4 ready Active
Yes — IC52Rational supports QGIS 4 (declared max version 4.99.0).
Peak flow calculator using the IC 5.2-IC Rational Method (Spanish Road Drainage Standard, Chapter 2). Computes QT for T=2, MCO, 5, 10, 25, 50, 100 and 500 years with full traceability. P0i from CLC layer. Excel export included.
About
IC52IC_Racional implements the full IC 5.2-IC rational method (Norma 5.2-IC, Capítulo 2) for surface drainage design of Spanish roads and infrastructure. Features: - 8 simultaneous return periods: T=2, MCO, 5, 10, 25, 50, 100, 500 years - MCO return period via ADIF formula T(Qmco) = 5·Cv (fallback 2.5 years) - Full formula chain: KA, tc, Fa, Fb, Fint, I(T,tc), C, Kt, QT - Results table shows βm, FT and β separately for full traceability - Heterogeneous catchment support (§2.2.4): Σ[Ci·Ai] - P0i automatic calculation from CLC layer (Table 2.3, same approach as CLC2Manning) - Regional β corrector from Table 2.5 (all regions) with log-linear FT interpolation - Contextual maps loaded from GitHub: β regions (Fig. 2.9) and hydrological groups (Fig. 2.7) - Pd automatic calculation from P_media and Cv (DGC table, linear interpolation) - Levante/SE method §2.3 for regions 72, 821, 822 with T>25 years - Excel export with colour-coded 12-column results table - QGIS 3.40+ compatible (Qt5 and Qt6)
| Author | Pedro Bohorquez Aliaga y Hugo Bohorquez Aliaga |
|---|---|
| Downloads | 895 |
| Latest version | 0.1.5 |
| Last updated | 2026-08-19 (58 days ago) |
| Min QGIS | 3.40.0 |
| Max QGIS | 4.99.0 |
| QGIS 4 ready | Yes |
| Maintenance | Active |
| Category | Hydrology & water |
| Tags | beta corrector, drainage, hidrologia, rational method, carreteras, instruccion carreteras, escorrentia, clc, p0, corine, hydrology, umbral escorrentia, spain, caudal, ic 5.2-ic, metodo racional, drenaje superficial |
Homepage · Repository · Issue tracker · Official page
Alternatives in Hydrology & water
- CrayfishQGIS 4 ready
Tools for mesh layers QGIS
- ArcGeek CalculatorQGIS 4 ready
ArcGeek Calculator is a QGIS plugin that provides a comprehensive set of tools for coordinate calculations, conversions, spatial operations,
- TUFLOWQGIS 4 ready
A collection of utilities for TUFLOW flood and coastal simulation in QGIS
Related plugins
- SIOSE2CNQGIS 4 ready
Calcula P0 y Número de Curva (CN) a partir de SIOSE, pendiente e IGME para flujos de trabajo hidrológicos e hidráulicos en España Peninsular
- CLC2ManningQGIS 4 ready
Calcula la rugosidad de Manning de CORINE 2018 y la recorta por un área de interés para flujos de trabajo de modelado hidráulico.
- Flood SimulatorNot QGIS 4 ready
Generates an EPA SWMM input file from GIS data (DEM, land-use raster, streets and area of interest) for urban flood and drainage analysis.
- VIDRasQGIS 4 ready
Automates the calculation of the Via de Intenso Desague (VID) according to Spanish Road Drainage Standard 5.2-IC, using HEC-RAS RAS Mapper o
- SIOSE2ManningQGIS 4 ready
Calcula la rugosidad de Manning a partir de SIOSE AR (T_COMBINADA - ID_COBERTURA_MAX) y la recorta por un Área de Interés georeferenciada pa
- Pghydro ToolsNot QGIS 4 ready
PgHydro Tools Interface for PgHydro Extension for PostgreSQL/PostGIS
Maintenance: Active = updated within 1 year, Quiet = 1–3 years, Likely abandoned = over 3 years.