Access the full text.
Sign up today, get DeepDyve free for 14 days.
W. Chancellor (1994)
Soil Physical Properties
P. Ian, J. Stuart (1996)
History and processes of gully initiation and development in eastern Australia
Durham Durham (1961)
Soil conservation in the Bredbo areaJ. Soil Conserv. Serv. NSW, 17
R. Vertessy, C. Wilson, D. Silburn, R. Connolly, C. Ciesiolka (1990)
Predicting erosion hazard areas using digital terrain analysis.IAHS-AISH publication
I. Moore, G. Burch, D. Mackenzie (1988)
Topographic Effects on the Distribution of Surface Soil Water and the Location of Ephemeral GulliesTransactions of the ASABE, 31
P. Lane, N. Nandakumar, D. Mackenzie, M. Nethery (1994)
Flow Pathways in an Experimental Catchment and the Implications for Groundwater Recharge
R. Eyles (1977)
Changes in drainage networks since 1820, Southern Tablelands, N.S.W.Australian Geographer, 13
I. Prosser, W. Dietrich, J. Stevenson (1995)
Flow resistance and sediment transport by concentrated overland flow in a grassland valleyGeomorphology, 13
D. Montgomery, W. Dietrich (1995)
Hydrologic Processes in a Low-Gradient Source AreaWater Resources Research, 31
I. Prosser, C. Slade (1994)
Gully formation and the role of valley floor vegetation
I. Prosser, J. Chappell, R. Gillespie (1994)
Holocene valley aggradation and gully erosion in headwater catchments, south-eastern highlands of AustraliaEarth Surface Processes and Landforms, 19
A. Abrahams (1984)
Channel Networks: A Geomorphological PerspectiveWater Resources Research, 20
W. Dietrich (1993)
The Channel head
D. Montgomery, W. Dietrich (1988)
Where do channels begin?Nature, 336
Starr Starr (1989)
Anecdotal and relic evidence of the history of gully erosion and sediment movement in the Michelago area, NSWAust. J. Soil Water Conserv., 2
D. Montgomery, W. Dietrich (1994)
A physically based model for the topographic control on shallow landslidingWater Resources Research, 30
A. Rinaldo, W. Dietrich, R. Rigon, Gregory Vogel, Ignacio Rodrlguez-lturbe (1995)
Geomorphological signatures of varying climateNature, 374
W. Dietrich, C. Wilson, D. Montgomery, J. McKean (1993)
Analysis of Erosion Thresholds, Channel Networks, and Landscape Morphology Using a Digital Terrain ModelThe Journal of Geology, 101
D. Montgomery, W. Dietrich (1989)
Source areas, drainage density, and channel initiationWater Resources Research, 25
I. Moore, G. Foster, M. Anderson, T. Burt (1990)
Hydraulics and overland flow.
R. Boast (1990)
Dambos: a reviewProgress in Physical Geography, 14
I. Moore, E. O'Loughlin, G. Burch (1988)
A contour‐based topographic model for hydrological and ecological applicationsEarth Surface Processes and Landforms, 13
D. Montgomery, W. Dietrich (1992)
Channel Initiation and the Problem of Landscape ScaleScience, 255
R. Horton (1945)
EROSIONAL DEVELOPMENT OF STREAMS AND THEIR DRAINAGE BASINS; HYDROPHYSICAL APPROACH TO QUANTITATIVE MORPHOLOGYGeological Society of America Bulletin, 56
I. Prosser (1991)
A Comparison of Past and Present Episodes of Gully Erosion at Wangrah Creek, Southern Tablelands, New South WalesAustralian Geographical Studies, 29
I. Prosser, W. Dietrich (1995)
Field Experiments on Erosion by Overland Flow and Their Implication for a Digital Terrain Model of Channel InitiationWater Resources Research, 31
W. Dietrich, C. Wilson, D. Montgomery, J. McKean, R. Bauer (1992)
Erosion thresholds and land surface morphologyGeology, 20
E. O'Loughlin (1986)
Prediction of Surface Saturation Zones in Natural Catchments by Topographic AnalysisWater Resources Research, 22
Freeze Freeze (1974)
Streamflow generationRev. Geophys., 12
Prosser Prosser, Slade Slade (1994)
Gully formation and the role of valleyfloor vegetation, southeastern AustraliaGeology, 22
A digital terrain model is used with process thresholds to predict the extent of a stable gully network in a 5 km2 catchment of the southeastern highlands of Australia. The model, developed by Dietnch et al. (1992, 1993), predicts the topographic controls on channel networks and interprets these in terms of a critical shear stress for channel incision (τc) applied by saturation overland flow. We adapt the model slightly to compare the shear stress applied by Hortonian overland flow to that applied by saturation overland flow. The limits to gully erosion in the catchment are controlled strongly by a topographic threshold that has an inverse relationship between upslope catchment area and local gradient. The topographic threshold for channel incision is reproduced using a simple model of Hortonian overland flow and a τc appropriate for incision into a degraded grass surface (τc = 245 dyn/cm2). This is consistent with historical evidence for the timing of gully erosion. The study confirms a strong topographic control on the extent of the channel network in a catchment significantly different from the western North America catchments where the topographic threshold was first demonstrated. Despite its simplicity, the model for incision by overland flow appears capable of distinguishing the hydrological processes responsible for channel incision when these are reflected in the relationship between channel network and landscape morphology. The model requires relatively simple inputs, suggesting it may be useful for mapping gully erosion hazard in actively eroding catchments.
Water Resources Research – Wiley
Published: Jul 1, 1996
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.