Nagy László (szerk.): A vízgazdálkodás fejlődése (TIT, Budapest, 1970)

X. Mellékletek

Fig. 12. Magnificient examples of human diligence and perseverance and of most efficient land use: terraced rice-fields in China. (Similar terraces were built by the Inkas along the western coasts of Peru) 61

Fig. 13. One of the most impressing monuments of Roman water engineering craftsmanship, the famous Nimes aqueduct ,,Pont du Gard” 74

Fig. 14, Danube bifurcation downstream of Visegrád 88

Fig. 15. A number of mountain creeks contribute to the water of the Sajó

River 93

Fig. 16. Values of precipitation, evaporation and temperature are measured

on hundreds of points in the country 105

Fig. 17. Overland flow means often danger to large areas 111

Fig. 18. The runoff of our rivers is known from measurements dating back

to several decades 118

Fig. 19. Flood runoff must be measured as well 123

Fig. 20. Six thousand houses out of 6350 were fully destroyed in Szeged by

the spring flood of the Tisza in 1879 128

Fig. 21. Low waters are measured too 130

Fig. 22. During the winter, our rivers are covered by thick ice 131

Fig. 23. Lake Balaton is the largest warm lake in Europe 142

Fig, 24. Dried-out soil is cracking 146

Fig. 25. Artesian waters are tapped by bored wells 151

Fig. 26. Water serves man in many ways 154

Fig. 27. Roads are sometimes overflooded too 155

Fig. 28. Dikes offer a protection against river floods 159

Fig. 29. A new dike was built near Szentendre 166

Fig. 30. Deficient height of the dike is compensated by sandbags during the

flood 168

Fig. 31. Industrial plants in the flood plain are often inundated 170

Fig. 32. Sometimes, flood protection is carried out among the houses 171

Fig. 33. In 1965, railway lines called for protection too 173

Fig. 34. At higher stages, the lower quay becomes overflooded too 178

Fig. 35. The stability of dikes is jeopardized by boilings 180

Fig. 36. Weak dikes are broken by the flood 181

Fig. 37. There is a frequent need to protect highways as well 183

Fig. 38. Flood protection must not relax during the night 184

Fig. 39. Traffic is not always safe on the dike crest 187

Fig. 40. Extraordinary floods call for the instantaneous heightening of dikes 191

Fig. 41. Wave action upon the dikes is attenuated by shelterbelts 194

Fig. 42. Rate of infiltration can be reduced by sheet piling 197

Fig. 43. Water filtrating through the dike must be watched during night

too 198

Fig. 44. Access from land and water has to be secured for the dikes 200

Fig. 45. Flood protection is often linked with heavy deployment 201

Fig. 46. Floods are kept under observation by riverain people too 203

Fig. 47. Flood protection activities are supervised by Cabinet members on

the spot 207

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