Cross-construction from structural mapping

In Saxony, the water structure of all wrrl-relevant rivers was recorded in the on-site procedure from 2005 to 2009. At the same time, all transverse structures were recorded with coordinates as part of the structural mapping. The survey was carried out on the basis of the categories of the structural mapping guide 'Water structure quality mapping in the Federal Republic of Germany 'Procedures for small and medium-sized rivers' (COUNTRY WORKING COMMUNITY WATER (LAWA) (ed.), Berlin, 2000), which differs from the survey form of the official cadastre (WEHR database). Occasional post-mapping/checks were carried out in 2009 and 2011.