1. Ramiro Neves Ext 1397, tel. 917224732 Ramiro.neves@tecnico.ulisboa.pt
Catchment Modelling
Ramiro Neves
Ext 1397, tel

2. Why Integrated catchment modelling?
Because the water laying in each water body is flowing due to gravity from higher to lower levels.
A pressure exerted in a water body will have consequences on downstream waterbodies.

4. Estuary Threats

5. Objective of the Modelling Lectures
Describe the main processes and how they are being handled in each type of model.
Provide to the student a clear idea of how to use models in order to optimize solutions, converting DPSIR into numbers
Driver (Anthropogenic activity)
Pressure (Consequence of the activity)
State (of the water body)
Impact (of a specific pressure)
Response (of the manager to improve state)

6. Threats in catchments Water resources conservation Soil conservation
Quantity:
Quality: eutrophication
Soil conservation
Erosion,
Organic matter loss
Salinisation
Landslides
Soil sealing
…..
Desertification is the loss of one or more soil properties, originating lower productivity.

8. Types of models
Many: Lumped models, semidistributed models and fully distributed models.
Models can be specific of a physical water compartment:
Meteorologists develop models for evapotranspiration,
Hydrogeologists develop models for groundwater
Agronomists put emphasis on the vadose zone models
Hydrologists tend to concentrate on surface fresh water (some on reservoirs)
Oceanographers tend to study estuaries and coastal waters
They can address a specific scale:
Local, catchment or global
Integrated over one year, daily time step, event oriented.
They can be process oriented
Salinization
Erosion
Fertilization

9. Distributed, Integrated Basin Modelling
2D Overland flow
Precipitation
Variable in Time
& Space
3D Porous Media
1D Drainage network
Dia mundial da água, Cascais, 2007

10. Why is temporal scale associated to depth and to confine aquifers?

12. What is the difference between a pond, as lake, a river, an estuary, a coastal sea or an ocean?
If we use the primitive equations, differences are the boundary conditions. If we use empirical equations they are totally different!

13. Integrated Basin Modeling
Flow Production
2 Different Soils
Infiltration
Overland Flow
Rain Intensity

14. Integrated Basin Modeling
Sediment Transport
2 Catchments
1 Reservoir
Rain Intensity
Dia mundial da água, Cascais, 2007

15. © 2008 Action Modulers. All rights reserved.
MOHID Land - Exemplos
Cheia no Vale do Tejo
Transport 1D
Overland 2D
© 2008 Action Modulers. All rights reserved.

16. Dam Break

18. Urban Flood