Water 2005

Pražské vodovody a kanalizace, a. s. (Prague’s water company) and the context of flood control measures undertaken in Prague

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CITY OF PRAGUE -  Press release

PRAGUE CITY HALL - Public Relations Department

Pražské vodovody a kanalizace, a. s. (Prague’s water company) and the context of flood control measures undertaken in Prague

The floods of 2002 caused damage to the water infrastructure assets operated by Pražské vodovody a kanalizace, a.s., to the tune of more than 500 million Czech crowns. Roughly 300 million CZK worth of damage was done to the Central wastewater treatment plant in Prague-Bubeneč alone. Pražské vodovody a kanalizace, a.s. is actively participating in the preparation and execution of the flood control measures programme for the City. Based on the flow quantities and the way the floods of 2002 occurred, a new procedure for closing down the sewer network has been established.  A timely shut off of flood control valves in the sewer system in the face of rising water levels of the Vltava river proved critical at the time of the floods, especially in the area of Old Town.

The Flood Commission, which is in close contact with the PVK company, has at its disposal a team of workers with precisely defined tasks for managing a possible flood event in Prague. The Central Control team of PVK is actively cooperating with the Operations Centre of the Crisis Team of the Prague City Hall and procedures have been defined for dealing with possible emergencies. Next year the Central wastewater treatment plant will undergo  an extensive reconstruction, incorporating the enhancement of a whole range of flood control measures. The City of Prague, as the owner of all the water-related infrastructure, has for example ensured, within its critical sections, the construction of new manholes with isolation facilities on outlets from relief chambers. PVK actively participates in such construction activities in its supervising capacity or else it cooperates in the design process.

The floods of 2002 caused damage to the water infrastructure assets, operated by Pražské vodovody a kanalizace, a.s., to the tune of more than 500 million Czech crowns,  with roughly 300 million CZK worth of damage  done to the Central wastewater treatment plant in Prague-Bubeneč.  On 8 August, the PVK company was obliged to take its water treatment plant in Podolí out of service. Actually, The City of Prague was lucky as far as the dispersal of its sources of potable water is concerned. The main water treatment plant for the City of Prague - Želivka is in fact located some 65 km from Prague, out of reach from the floods. This treatment plant succeeded along with the plant at Kárané, in supplying the entire City of Prague with sufficient quantities of quality potable water. Prague thus at least escaped unharmed on this particular score.

The most seriously hit by the floods was the Central wastewater treatment plant, which had to be completely by-passed on the evening of 13th of August. Water started to overflow the eight-meter high protection dykes. In the end, these were exceeded by water levels two meters higher, and the plant was completely flooded. The sewer system was damaged by the flood as well. Luckily, the worst fears regarding possible damage to the vaulted sewers in the area underneath Staroměstské Square, did not materialise.

What was flooded and destroyed by the floods of 2002 in Prague

water mains network

·    water treatment plant in Podolí – intake flooded, basement of the old filtration building, etc.

·    industrial water treatment facility at the Libeň island

·    valving facilities serving the inverted siphon across the Vltava, PSs and other operational complexes in the water mains network, in total 19 facilities

sewer system

·    collapsed sewers - sewer 60/110 in Haštalská street, sewer 70/125 in Petrské square, below the Russian Embassy in Dejvice, in Bubeneč, etc.

·    manhole at the National Theatre – Divadelní street

·    30 pumping stations flooded and damaged by the flood

·    Central WWTP – completely flooded, only the office building was safe from the 2nd floor up

·    Industrial WWTP in Sedlec

Prepared by:
Marcela Dvořáková
Communications and Marketing Manager, PVK

Prague, 15 July 2005

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