Type of resources
Contact for the resource
The Directive defines the category "lake" as "a body of quiet superficial inland water " (Article 2) and specifies a lower limit of 0.5 km2 when establishing its rates (Annex II). At the level of Spain and based on preliminary CEDEX criteria, all those lakes with an area of more than 50 ha (0.5 km2) or all those with an area of more than 8 ha and exceeding 3 m in depth are included as bodies of water. The Agency through two agreements with research centers has proposed as bodies of water that could be assimilated to the category of lakes: 1 - Lakes and ponds of more than 0.5 ha of surface located at altitudes above 800 m and lakes below this level with a depth of more than 6 m (agreement with the CEAB-CSIC; Agency, 2003d). 2 - Wetlands located at altitudes below 800 and with a depth of less than 6 m (agreement with the UdG; Agency, 2004d). Also included in this category are the reservoirs of the inland basins of Catalonia.
Drainage and flood plain
In order to develop the Article 5 of the Directive, it is necessary to define in advance the basic river network of the demarcation on which the water bodies will be delimited. To do this, the river network extracted from the 1:50,000 scale topographic base of the Cartographic Institute of Catalonia (ICC, 2002) was used. On this basis, some background has been taken into account and some criteria have been applied that have served to establish the definitive scope of the river network. Background: These backgrounds are based on the following three considerations and sources: - Water Framework Directive: the classification of rivers according to system A of the Directive considers rivers with a drainage basin equal to or greater than 10 km2. - Centro de Estudios Hidrográficos del CEDEX: has restricted the basic hydrographic network based on two conditions: (i) drainage basin equal to or greater than 10 km2; and (ii) an average annual contribution in natural regime greater than 3.15 hm3/year (100 L/s). - Reference stations: regardless of the flow and the drained basin area, the river sections where reference stations are used to determine the reference conditions of certain river types have been considered.
Vulnerable elements that can be affected in case of breakage or damage of the Llosa del Cavall dam.
Flood areas resulting from the rupture or breakdown of the Baells dam.
Flooding areas resulting from the rupture or damage of the Llosa del Cavall dam.
Flooding areas resulting from the breakage or damage of the Sant Ponç dam.
The basis of hydrographic network 1: 50000 is a project carried out by joint order of the Ministry of the Environment (DMA) and the Catalan Water Agency (ACA). The aim of this project is to obtain digital databases and GIS network watershed of Catalonia for scales 1: 50000. The primary source of information for the elaboration of this theme was based hydrographic network base topographic 1: 50000 (BT-50M v3.0) was defined criteria and topographic database drainage basins, for what has become a task of densification and homogenization. It has kept the artificial network but has not been taken into account in generating basins, and in the case of natural drainage network has added sections connection guarantee continuity of it. This coverage corresponds to the selection of the 0 degree axis of the base network of rivers (xarxa50m), adding those areas corresponding to the selection made so that all points of Environmental Control (Inspection and Control), it is referenced on the same network. Only display areas corresponding to the basins of Catalonia.
The basis of basins 1: 50000 is a project carried out by joint order of the Ministry of the Environment (DMA) and the Catalan Water Agency (ACA). The aim of this project is to obtain digital databases and GIS network watershed of Catalonia for scales 1: 50000. It starts from the Terrain Elevation Model (DEM) of Catalonia 15x15 meters generated by interpolation from the altimetric information gathered with the Topographic Map 1: 5000 Catalonia With the new version 1. Elevation Model extracted from the base 1 : 5000 v2 will have a more favorable hydrological behavior, but at the time of starting the generation of watershed only one part of the territory. In this version only shows the basins corresponding to the area of basins of Catalonia.
Vulnerable elements that can be affected in case of breakage or damage of the Baells's dam.