Analysis of streamflow generation following deforestation in southwest Western Australia

Ruprecht, John; Schofield, N. J.

doi:10.1016/0022-1694(89)90093-0

Cited by 98 publications

(80 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[13] Numerous experimental studies in the Darling Plateau catchments have examined how a reduction in native vegetation influences groundwater levels and runoff [Bari et al, 1996;Ruprecht and Schofield, 1989;Stoneman, 1993]. After thinning or clearing, a rise in water table and an increase in the near-stream saturated area has been observed in experimental catchments, resulting in a positive shift in the annual relationship between rainfall and runoff.…”

Section: Discussionmentioning

confidence: 99%

Streamflow decline in southwestern Australia, 1950–2008

Petrone

Hughes

Niel

et al. 2010

Geophysical Research Letters

174

168

View full text Add to dashboard Cite

Southwest Western Australia (SWWA) has experienced a 15–20% reduction in rainfall since the 1970s with severe reductions in inflows to Perth drinking water reservoirs. To quantify rainfall and runoff patterns, we used trend and change point analyses for a 50 year record (1950–2008) and in the last two decades (1989–2008). From 1950–2008, trend tests showed significant declines in annual rainfall and runoff with corresponding change points for both rainfall and flow in the late 1960s or mid‐1970s. In the more recent record (1989–2008), runoff declined in the majority of catchments, but rainfall did not show a significant downward trend. Rather, streamflow decline was observed as a step change in response to the occurrence of below‐average rainfall years. A shift from perennial to ephemeral streams and a decline in the runoff coefficient (runoff/rainfall) in the last decade suggests a new hydrologic regime has developed with important implications for future surface water supply.

show abstract

Section: Discussionmentioning

confidence: 99%

Streamflow decline in southwestern Australia, 1950–2008

Petrone

Hughes

Niel

et al. 2010

Geophysical Research Letters

174

168

View full text Add to dashboard Cite

show abstract

“…When the rising groundwater level reaches the stream invert and creates groundwater-induced saturated areas, streamflow and salt discharge increases greatly (Croton and Bari, 2001;Ruprecht and Schofield, 1989). Bari and Smettem (2004) followed the downward approach to identify the minimal model structure and complexity required to represent the changes in streamflow generation process following land use changes on a monthly time step.…”

Section: Introductionmentioning

confidence: 99%

A conceptual model of daily water balance following partial clearing from forest to pasture

Bari

Smettem

2006

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract.A simple conceptual water balance model representing the streamflow generation processes on a daily time step following land use change is presented. The model consists of five stores: (i) Dry, Wet and Subsurface Stores for vertical and lateral water flow, (ii) a transient Stream zone Store (iii) a saturated Goundwater Store. The soil moisture balance in the top soil Dry and Wet Stores are the most important components of the model and characterize the dynamically varying saturated areas responsible for surface runoff, interflow and deep percolation. The Subsurface Store describes the unsaturated soil moisture balance, extraction of percolated water by vegetation and groundwater recharge. The Groundwater Store controls the baseflow to stream (if any) and the groundwater contribution to the stream zone saturated areas. The daily model was developed following a downward approach by analysing data from Ernies (control) and Lemon (53% cleared) catchments in Western Australia and elaborating a monthly model. The daily model performed very well in simulating daily flow generation processes for both catchments. Most of the model parameters were incorporated a priori from catchment attributes such as surface slope, soil depth, porosity, stream length and initial groundwater depth, and some were calibrated by matching the observed and predicted hydrographs. The predicted groundwater depth, and streamflow volumes across all time steps from daily to monthly to annual were in close agreement with observations for both catchments.

show abstract

“…The soils are mainly gravelly and sandy laterites overlying a kaolinitic clay. In the summer of 1976/77 the catchment was completely cleared and the area aerially sown to clover and grass in May-June 1977, and then leased and grazed with sheep and horses in 1978 (Ruprecht & Schofield, 1989).…”

Section: Wights Catchmentmentioning

confidence: 99%