Volume 5
Issue 2
Environmental Development
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume5/issue2/environment/abs-02.html
THE INFLUENCE OF THE SMALL RESERVOIRS ON THE AMOUNT OF SUSPENDED SEDIMENT IN A STREAM AND THE SEDIMENT YIELD VALUE
Szymon Szewrański
ABSTRACT
The presented paper is an edited version of Ph.D thesis of the same title and by the same author. The investigations were carried out in a small agricultural catchment area in the hydrological years 1998/1999-1999/2000. Four cross sections, above and below two small ponds of the total area of 0.8 ha, were subjected to daily bathometrical and hydrological measurements. For each hydrological year, the total suspended loads both supplied and carried out from the ponds were determined. The accumulation rate was analysed against the changeable water discharge and supplied sediment load. The changes in sediment yield values were analysed against the archive data from the years 1977/78-1993/94 in which no ponds were present in the area covered by the studies.
Key words: water erosion, sediment yield, fish ponds .