Title

Spatial and temporal variations of suspended sediment responses from the sub-tropical Richmond River catchment, NSW, Australia

Document Type

Article

Publication details

Hossain, S, Eyre, BD & McConchie, D 2002, 'Spatial and temporal variations of suspended sediment responses from the sub-tropical Richmond River catchment, NSW, Australia', Australian Journal of Soil Research, vol. 40, no. 3, pp. 419-432.

Abstract

Suspended sediment exports from the Richmond River catchment were examined during 2 hydrological years (1994–96). On a yearly basis, the Richmond River catchment produced 93% of the suspended sediment load, while sediment exports from the Bungawalbin Creek subcatchment always remained low due to its flat topography and extensive forest coverage. Suspended sediment hysteresis patterns exhibited a clockwise response for 2 steep and less forested subcatchments and an anti-clockwise response for relatively low gradient and more forested subcatchment during all flood events. Land use changes in the Richmond River subcatchments indicate a possible increase of suspended sediment load of about 6-fold from their pristine condition.