CGS photo archive application makes large historical and contemporary photographic documentation of the CGS from the Czech Republic and abroad accessible to public. This application allows the user to search photos according to the information about the author, year of origin, localization (based on administrative units), geological classification, geological age and geological localities. Predefined galleries (series of thematic images) are available as well (e.g. Lipno dam construction 1958–1959 or Expedition to the Antarctic 2004–2009).
Photo documentation is comparative material source for protection important geological locations for understanding of historical terrain maps and documentation (e.g. against flooding of dam systems), for study of topical water equipment (dewatering pit) and harvesting equipment, but also, for example, in enquiry into morphological evolution of the landscape (unstable slopes, rivers, canyons). New additions of photo archives are exactly located (x,y) and described in more detail (author, year, the object name and the location name, number of task and it's name). There are held both classic photos (mostly size from 13x9 to 18x13) and digital photos (original unmodified files in *.jpg format, size 0,5 - 1,5 MB). They are spared on CD or DVD. Classic photos are scanned in *.tif and *.jpg format and the previews are degradated to *.jpg format. Both types of files are spared on data carrier. The spare files and the positives are available in the archive by the database administrator. Scanned photos are available in preview forms to users through the search application on the Internet. Nowadays, in the database, there are recorded over 13.000 records of archival documentation. Selection of photographs by various criteria:
1) Photo ID (number)
2) Location (e.g. Kolin)
3) Municipality (e.g. Prague)
4) District (selection of the code list, with mention of the number of photos)
5) Territory (selection of the code list, with mention of the number of photos)
6) Country (selection of the code list, with mention of the number of photos)
7) Region (selection of the code list, with mention of the number of photos(e.g.Orlicke Mountains(26))
8) Map ZM 50 ((Basic Map 1:50.000) (selection of the code list, with mention of the number of photos (e.g. Policka (1433)(9)) 1433 is map number, 9 is number of records)
9) Map GK 200 (Map Gauss - Krüger 1:200 000) (selection of the code list, with mention of the number of photos (e.g. Ostrava (M34XIX) (44)) M34XIX is map number, 44 is number of