Variation in suspended sediment concentration during storm discharges in three small streams in upper osun basin,Central Western Nigeria |
| |
| Authors: | L K Jeje O O Ogunkoya J M Oluwatimilehin |
| |
| Abstract: | 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. |
| |
| Keywords: | Suspended sediment Hysteresis Sediment load Sediment source |
|
|
