Obtained Embankments of the Mała Wisła River are a typical example of "old", exploited for several dozen years flood embankments made of local soils taken up in a close vicinity of the constructed bank and the river. The soils were alluvial soils i.e. cohesive soils containing organic parts according to the geotechnical classification. Along a section of the Mała Wisła from its confluence with the Biała River to the outflow of the Przemsza a flood in July 1997 posed a threat to the security of areas protected by flood embankments. Water level between the banks sometimes reached the crest's ordinate; local seepage and water flow through the body and substrate of the banks were observed. Soon after the flood, a technical evaluation of the embankments involved all four sections of a combined length of c. 7.6 km, where these phenomena were recorded. The paper discusses results of this evaluation, which concluded that the studied embankments did not meet technical standards and requirements, which should be fulfilled by the flood banks. Their modernization along the whole stretch was found to be necessary.Conclusions drawn from detailed studies carried on the embankments of the Mała Wisła may be valid for most flood embankments in Poland.
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