Joint International Conference on Long-term Experiments ...

ecorded with a high level frequency on the streams in the Cluj and Dej Hills and in the
Almaş-Agrij Depression in May and June.
On most rivers in Almaş-Agrij Depression and Cluj and Dej Hills the most
considerable frequency represented those floods that maintained their total duration
between 5 and 15 days (30 – 45 % of all cases). The streams that had more frequent
floods with duration over 20 days (Borşa river) were excepted. The floods with a less
duration than 5 days had the most considerable frequency in Agrij, Almaş and Nadăş
basins, being determined by the torrential nature of the rainfalls, the reduced surface of
the basin (Nadăş to Aghires, 39.1 km 2 ) and by the relative large slope.
The increasing time of the floods is different, depending on the nature of rainfalls,
varying, in the analysed rivers, between 4 and 130 hours.
The maximum debit, increasing time, total time and the volume of floods are the
main elements of the flood hydrograph. They constitute the bench mark for flood.
CONCLUSIONS
The results presented above let us come to the following conclusion: the knowledge
regarding floods would help solving several issues like: the understanding of the
nature, the development of some protection or adaptation programmes etc. Establishing
the frequency and the amplitude of floods constitutes very important aspects
concerning the assessment of risk of inundations.
After the floods, it is well known that the set back to normal conditions and the
rehabilitation of the damaged environmental factors involves material effort and
important collective actions, sometimes difficult to perform (Stanescu, Drobot, 2002).
REFERENCES
1. Mustăţea, A., (2005), Viituri Excepţionale pe teritoriul României, Bucureşti;
2. Pandi, G., (2002), Riscul în activitatea de apărare împotriva inundaţiilor, Riscuri şi
Catastrofe, vol. I, Editura Casa Cărţii de Ştiinţă, Cluj-Napoca, p. 131-142;
3. Sorocovschi, V., (2002), Hidrologia uscatului, vol II, Editura Casa Cărţii de Ştiinţă,
Cluj-Napoca;
4. Sorocovschi, V., (2005), Câmpia Transilvaniei – Studiu hidrogeografic, Editura Casa
Cărţii de Ştiinţă Cluj-Napoca;
5. Stănescu, V. Al., Drobot, R., (2002), Măsuri nestructurale de gestiune a inundaţiilor,
Editura HGA Bucureşti;
6. Studii Hidrologice Anuale, 1976-2004, Arhiva Direcţiei Apelor Someş-Tisa, Cluj-
Napoca.
522