Runoff Routing Models in ICM InfoWorks Networks

 Runoff Routing Models in ICM InfoWorks Networks

#	🚰 Routing Model	📜 Description	📊 Subcatchment Data Fields Used	🌏 Appropriate For
1	🌊 Clark	Flow is routed using the Clark unit hydrograph method. Lag time and time of concentration are defined by the user.	Time of concentration, Lag time	France and anywhere the Hydrological Engineering Center’s Hydrological Modeling System (HEC-HMS) models are used.
2	🇫🇷 Desbordes	Flow is routed using a single linear reservoir, whose routing coefficient depends on subcatchment area, ground slope and percentage impermeable.	Catchment slope, Catchment dimension (length)	French systems running with event based simulations.
3	⛩️ Kadoya	Flow is routed using the Japanese Quasi Linear Reservoir Method.	Catchment area	Standard runoff model in Japan.
4	🌄 Large Catch	Flow uses two equal linear reservoirs in series.	Catchment slope, Catchment dimension (length)	UK systems where subcatchments are larger than 1 ha.
5	🇯🇵 Non-Linear	Flow is routed using the Japanese Storage Function Method.	Catchment slope, Catchment dimension, and more...	Standard runoff model in Japan.
6	🇬🇧 ReFH	Flow is routed using a kinked triangle unit hydrograph.	Time to peak, Unit hydrograph peak, Degree of kink	UK drainage systems.
7	🏞️ SCS Unit	Flow is routed using an SCS unit hydrograph.	Catchment area, Time to peak, Base Time	Rural areas (except mountainous or flat wetland areas).
8	⛰️ Snyder Unit	Flow is routed using the Snyder unit hydrograph method.	Peaking coefficient, Lag time	Subcatchments in the Appalachian Highlands.
9	🌪️ SWMM	Flow is routed using a single non-linear reservoir.	Catchment slope, Catchment dimension (width)	USA drainage systems using the SWMM runoff model.
10	🕰️ Unit	Flow is routed using a unit hydrograph.	Varies based on calculation method	Varies based on calculation method.
11	🌦️ Wallingford	Flow uses two equal linear reservoirs in series.	Catchment slope	UK systems where sub-catchments are under 1 ha.
12	📐 Rational	Flow is routed using a triangular unit hydrograph.	Varies based on Time of concentration method	Developed for subcatchments in Japan.
13	🇩🇪 Cascade	Flow is routed using a number of linear reservoirs in series.	Storage factor K	Suitable for Germany or similar climates.
14	🌐 RAFTS	Flow is routed using 10 non-linear reservoirs.	Degree urbanization, RAFTS parameters, and more...	Hydrology modeling in various regions.

NewUK runoff model information in a visually appealing table format:

  NewUK runoff model information in a visually appealing table format:

📌 Attribute	📜 Details
🌐 Model Name	NewUK (Variable) PR
🔍 Description	A model primarily used in the UK, which takes into account the changing conditions of a catchment over time, especially for pervious surfaces.
📊 Key Features	- Adapts to varying catchment conditions\

• Represents changes in catchment wetness during long storm events | | 🔢 Parameters/Data Fields | - New UK Depth: The depth of runoff\
• API30: An initial condition representing antecedent precipitation index | | 🌍 Typical Application | Primarily used for pervious catchments in the UK, especially during long storm events where catchment wetness varies. | | 📚 Origin & Usage | Developed as a modern approach for representing runoff in the UK, considering the variability in catchment conditions. Commonly used in hydraulic modeling software for simulating runoff from catchments in the UK. | | 🔗 Associated Models/Methods | Often used alongside other models or methods that simulate runoff from impervious surfaces or that take into account other factors like infiltration, evaporation, etc. |

The runoff component in SWMM5

 The Storm Water Management Model (SWMM) is a comprehensive software used for the simulation of water quantity and quality from primarily urban areas. Here's a detailed table about the runoff component in SWMM:

Aspect	Details with Emojis
Origin 🌍	Developed by the U.S. Environmental Protection Agency (EPA) in the 1970s. It has undergone various updates since.
Primary Use 🛠️	Simulation of urban runoff quantity and quality through continuous or single-event rainfall.
Core Principle 🧠	Simulates the runoff processes using hydrologic and hydraulic components, considering various land surfaces and practices.
Components 📊	- Subcatchments: Represent distinct hydrologic units in the model. 🌄\

• Hydrologic Processes: Infiltration, evaporation, and rainfall-runoff transformations. 🌧️➡️🌊\
• Routing: Movement of flow through channels, pipes, and storage areas. 🚰➡️🌊 | | Variables 🔢 | - Rainfall Data: Historical or synthetic data for simulation. 🌧️\
• Land Use & Cover: Affects runoff coefficients and infiltration rates. 🌳🏙️\
• Infiltration Models: Green-Ampt, Horton, or Curve Number methods for estimating ground infiltration. 🌱💧 | | Applications 🏙️ | - Stormwater runoff modeling for urban and suburban areas.\
• Design and analysis of drainage systems.\
• Water quality assessment and management.\
• Flood forecasting and floodplain mapping.\
• Combined and sanitary sewer overflow studies. | | Advantages ✅ | - Comprehensive tool that considers both hydrology and hydraulics.\
• Flexible in modeling various urban drainage components.\
• Can simulate water quality, including pollutant buildup and washoff.\
• Allows for continuous long-term simulations. | | Limitations ❌ | - Can have a steep learning curve for new users.\
• Requires detailed input data for accurate simulations.\
• Computational time can be long for very large or complex models. |

This table provides an overview of the runoff component in SWMM. SWMM's versatility has made it a preferred tool for many professionals dealing with urban drainage and stormwater management.