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Local Spatial Data Infrastructure, Trujillo - Peru Spatial Data Infrastructures and Base Maps The development of SIMTRU to support the process of A21 requires vision, capable manpower and institutions, funding, and last but not least (spatial) data. Within Peru the IGN (National Geographic Institute) is responsible for national mapping and produces topographic maps at 1:100.000 and smaller scales. Unfortunately IGN will only produce large-scale digital base maps on request, and on the basis of full cost recovery and even then much depends on the manpower of IGN and production time can be very long. The costs for such urban base maps are very high and most municipalities in Peru, and definitively Trujillo, cannot afford such data. Within Peru there is no national cadastre and property taxation, which is a municipal task, is based on declarations from the property owners themselves resulting in under – registration of properties. The national public register is voluntarily and duplication of property ownership is not uncommon. Census maps are very rudimentary and with the approx 10 year intervals between census are mostly outdated. In short Municipalities have to organise base maps due to weak national data production organisations. The Planning bureau of Trujillo started nearly 20 years ago with the development of a large-scale base map for Trujillo. On the basis of aerial photographs (scale 1:4000) a digital parcel map was made (AutoCAD) of the city by a consultant from Lima. The map was mainly used for planning and building control purposes and due to lack of local capacity updates could not be made. Since 1996 the privatised national telephone company (Telefonica de Peru) started to develop large-scale base maps (using GPS and field measurements) for the main cities of Peru for the management of their telephone infrastructure. In 1998 such a map was made of a large part of Trujillo and while the Municipality offered the previous maps to facilitate the work Telefonica offered a copy of the new large-scale base map of Trujillo to the Municipality. This map was the start of the fiscal cadastre project aiming at revenue generation for Trujillo. Up-to-date parcel maps facilitate the collection of attribute data and thus of the possibility to send out higher accurate and more taxation bills to the property owners.  Figure 2 Data flow and institutional relationships of the local spatial data infrastructure in Trujillo (SIMTRU) The fiscal cadastre project consisted of the following phases:
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