Premium
Variation in suspended sediment concentration during storm discharges in three small streams in upper osun basin, Central Western Nigeria
Author(s) -
Jeje L. K.,
Ogunkoya O. O.,
Oluwatimilehin J. M.
Publication year - 1991
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/hyp.3360050404
Subject(s) - streams , storm , sediment , hydrology (agriculture) , erosion , hydrograph , environmental science , geology , drainage basin , geomorphology , oceanography , geotechnical engineering , geography , cartography , computer science , computer network
The suspended sediment concentration response of three small streams draining quartzites and quartz‐schists in southwestern Nigeria to storms of varying magnitude are presented. A total of 1468 water samples from 62 storm responses with peak stream discharge values ranging from 80 to 120 l s −2 were analysed and storm and suspended sediment concentration hydrographs and hysteresis loops were used to depict the response patterns. The six different types of responses identified include the single and multiple discharge peak rises with sediment lead and lag and also the mixed response patterns. Both valley slope and channel erosion constituted important sources of suspended sediment. However, sediment availability, exhaustion, and flushing effects determined the variation in the different response types.