Relics and transformation of former ponds in the urban environment of the historical region of Bohemia (Czech Republic)

Figures & data

Figure 1. Studied cities in the context of the historical regions of the Czech Republic (data sources: © ArcČR500, ARCDATA Prague, 2016).

Table 1. The studied attributes of former ponds.

Attributes	Specification	Sources
(1) Existence of dam relic	Yes/No	Old and current maps, DTM
(2) Length of dam relic	Length (meters)	DTM on Geoportal ČÚZK (DMR5G)
(3) Current use of dam relic	6 categories (Transport infrastructure, Forest, Non-forest woody vegetation, Fields, Meadows or pastures, Building infrastructure)	Aerial photography (ortophotomaps), Current maps
(4) Size of ponds	Area (hectares)	Old maps
(5) Prevailing land-use of former pond areas	12 categories according to areas in urban plans (Housing, Natural areas, Urban greenery, Pastures and meadows, Arable land, Industrial and storage, Transport and technical, Sport and recreational, Public and commercial Services, Forest, Mining and post-mining, Other)	Urban plans, Current maps
(6) Position of the pond in the city administration area	3 categories (Built-up areas; Surround; Rural areas)	Current maps

Figure 2. Main results from analysis of former ponds in the 34 city administrative areas.

Figure 3. Former pond areas and length of dam relics: (a) Summary for studied cities; (b) City of Pardubice – position of former ponds from the old maps and former dams visible on the DTM (data source: © ČÚZK).

Figure 4. Examples of relics of the dam in city administrative areas: (a) Relic of a massive dam of the former pond Točník which is used as a road embankment (city: Klatovy; old map: 1MS); (b) Half of the former dam of the pond covered by non-forest woody vegetation (city: Písek; old map: 2MS); (c) Relics of dams in the woods near the city Jihlava (old map: 1MS). Source: © ČÚZK; © Austrian State Archives [Österreichisches Staatsarchiv] – all rights reserved (survey, z.B. ‘Josephinische Landesaufnahme’ / ‘First military survey’), Mapire.eu; © Czech National Geoportal (CENIA).

Figure 5. Place names connected with former ponds in urban landscape: (a) Street Rybniční (Pond street) which refers to one of the former ponds and copies the original pond dam (city: České Budějovice); (b) Enclave of the village Spojil in the administration area of the city of Pardubice, which was built on the bottom of the pond of the same name Spojil. Source: © OpenStreetMap; © Austrian State Archives [Österreichisches Staatsarchiv] – all rights reserved (survey, z.B. ‘Josephinische Landesaufnahme’ / ‘First military survey’), Mapire.eu; © Czech National Geoportal (CENIA).

Figure 6. Uncertainty about the reconstruction of water area of pond: red line – pond water area according to 1MS; yellow line – wet meadow according to 2MS; white lines – contours Data source: © Austrian State Archives [Österreichisches Staatsarchiv] – all rights reserved (survey, z.B. ‘Josephinische Landesaufnahme’ / ‘First military survey’), Mapire.eu; ; © Czech National Geoportal (CENIA); © ZABAGED; ČÚZK.

Figure 7. Limits of the old maps: (a) Different numbers of ponds and their depiction between two map sources (city: Jindřichův Hradec); (b) Different styles of displaying ponds on the map sheets of 1MS. Source: © Austrian State Archives [Österreichisches Staatsarchiv] – all rights reserved (survey, z.B. ‘Josephinische Landesaufnahme’ / ‘First military survey’), Mapire.eu; ; © Czech National Geoportal (CENIA).