воскресенье, 16 июля 2023 г.

Water and sewer GIS map creation for the mun. Straseni, Republic of Moldova

In the year 2021 I was involved into creation of water and sewer GIS map for the mun. Strășeni. 

QGIS software and shape file were adopted as a standard for the map. Line map 2017 and orthophoto 2020 was set as a base map for the water and sewery map. National coordinate system MOLDREF99 and Baltic 1977 was set up for the project.

At that moment only map data were on paper - cadaster map printed at scale approximatively 1:4000 with hand drawn water lines. This situation happened because of  rehabilitation of water system in mun. Strășeni in 2000s was done without creation of as built documentation. 


A lot of sewery lines built before 1990s were digitized from city topo plans 1:500

Sewery lines built after 2015 has been documented with as built survey 1:500 in AutoCAD drawing

After all existing paper documents (including topo plans 1:500) and AutoCAD drawings were processed and "paper" data "moved" to a digital map, we started next step. Map was divided into pages printed at scale 1:1000 and water company personnel checked it and completed.

 Overview of atlas pages.
    After all corrections and completions were done the final map was printed again and organized into atlas.

    QGIS projects windows looks like: