A GIS-based method to calculate flow accumulation by considering dams and their specific operation time

Schäuble, Holger; Marinoni, Oswald; Hinderer, Matthias

doi:10.1016/j.cageo.2007.05.023

Cited by 57 publications

(31 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This latter variable corresponds to a theoretical estimate of water quantities accumulated in a point coming from upstream flows (Schä uble et al, 2008) and was generated using the Arc Hydro toolbox of ArcGIS (Maidment, 2002). Pedological variables considered were:…”

Section: The Availability Of Watermentioning

confidence: 99%

Enrichment of logging gaps with moabi (Baillonella toxisperma Pierre) in a Central African rain forest

Doucet

Kouadio

Monticelli

et al. 2009

Forest Ecology and Management

View full text Add to dashboard Cite

Section: The Availability Of Watermentioning

confidence: 99%

Enrichment of logging gaps with moabi (Baillonella toxisperma Pierre) in a Central African rain forest

Doucet

Kouadio

Monticelli

et al. 2009

Forest Ecology and Management

View full text Add to dashboard Cite

“…Apart from regional differences, there are almost no large river catchments that are unaffected by large dams and their continuous or intermittent influence on sediment yield (Schäuble et al 2008). In Mediterranean areas and semiarid environments, where water resources are scarce and variable in time, dams located in the headwaters are the main source of water for irrigation, hydroelectricity production, and human supplies.…”

Section: Introductionmentioning

confidence: 99%

Assessing the potential effect of different land cover management practices on sediment yield from an abandoned farmland catchment in the Spanish Pyrenees

López‐Vicente

Lana-Renault

Ruiz³

et al. 2011

J Soils Sediments

View full text Add to dashboard Cite

Purpose Sediment delivery from headwater catchments to reservoirs is a serious threat to reservoir sustainability and is a critical issue in Mediterranean environments where water resources are scarce. In this study we assessed the consequences of two landscape management scenarios (natural vegetation recovery and scrub clearance) on soil erosion and sediment yield. The results were analyzed in relation to predicted and measured rates of soil erosion and sediment yield, with the aim of promoting better management practices. Materials and methods The study area was the Arnás River catchment (284 ha), which is located in the central Spanish Pyrenees; the area includes abandoned and poorly managed fields. The combination of the RUSLE and SEDD models of soil erosion and sediment delivery was evaluated in terms of its ability to predict annual rates of sediment yield, using field measurement data for seven water years at the gauging station. The consequences of natural plant succession in other areas of the Spanish Pyrenees and scrub clearance practices implemented by certain regional governments to increase grazing meadow areas and reduce the incidence of wildfires were spatially analyzed using GIS. The main sediment source areas were identified, and their specific and total sediment yields were calculated. Results and discussion The predicted soil loss under existing conditions was 2.6 Mg ha −1 year −1 , with 5% of the surface area affected by rates greater than 2 Mg. The measured sediment yield range was 69-534 Mg year −1 . The maximum sediment yield detected was associated with an extraordinary debris flow. The predicted rates were strongly correlated to measured rates (Nash-Sutcliffe coefficient= 0.72). The main sources were alluvial deposits [specific sediment yield (SSY)=51 Mg ha −1 year −1 ], bare soil (SSY= 12), unpaved trails (SSY=11), lots (SSY=4), and pastures (SSY=1). Under a scenario of vegetation recovery, decreases of 3%, 17%, and 16% in soil loss and sediment delivery and yield (respectively) are predicted, whereas increases of 15%, 5%, and 2% are predicted following scrub clearance practices. Conclusions Coupling the RUSLE and SEDD models enabled estimation of annual values of soil erosion and sediment delivery in monitored and unmonitored catchments of small and medium size, making this approach a useful tool for risk analysis. Management practices that combine fire-risk control, by the implementation of scrub clearance practices, with the effects of plant succession on sediment production are suggested as the best management strategy.

show abstract

“…These simulations are based on single-direction flow algorithm (D8) (also called steepest gradient algorithm) (O'Callaghan and Mark, 1984). The D8 algorithm has been widely used in the simulation of surface flow paths (e.g., Marks et al, 1984;Jones, 2002;Schäuble et al, 2008). However, it has not been widely used to simulate subsurface flow paths at different interfaces, although some studies have used other algorithms (e.g., MD8 and Dinf) to predict groundwater level thus groundwater flow (e.g., Zinko et al, 2005;Sørenson et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Simulation and validation of concentrated subsurface lateral flow paths in an agricultural landscape

Zhu

Lin

2009

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The importance of soil water flow paths to the transport of nutrients and contaminants has long been recognized. However, effective means of detecting concentrated subsurface flow paths in a large landscape are still lacking. The flow direction and accumulation algorithm based on single-direction flow algorithm (D8) in GIS hydrologic modeling is a cost-effective way to simulate potential concentrated flow paths over a large area once relevant data are collected. This study tested the D8 algorithm for simulating concentrated lateral flow paths at three interfaces in soil profiles in a 19.5-ha agricultural landscape in central Pennsylvania, USA. These interfaces were (1) the interface between surface plowed layers of Ap1 and Ap2 horizons, (2) the interface with subsoil water-restricting clay layer where clay content increased to over 40%, and (3) the soil-bedrock interface. The simulated flow paths were validated through soil hydrologic monitoring, geophysical surveys, and observable soil morphological features. The results confirmed that concentrated subsurface lateral flow occurred at the interfaces with the clay layer and the underlying bedrock. At these two interfaces, the soils on the simulated flow paths were closer to saturation and showed more temporally unstable moisture dynamics than those off the simulated flow paths. Apparent electrical conductivity in the soil on the simulated flow paths was elevated and temporally unstable as compared to those outside the simulated paths. The soil cores collected from the simulated flow paths showed significantly higher Mn content at these interfaces than those away from the simulated paths. These results suggest that (1) the D8 algorithm is useful in simulating possible concentrated subsurface latCorrespondence to: H. S. Lin (henrylin@psu.edu) eral flow paths if used with appropriate threshold value of contributing area and sufficiently detailed digital elevation model (DEM); (2) repeated electromagnetic surveys can reflect the temporal change of soil water storage and thus is a useful indicator of possible subsurface flow path over a large area; and (3) observable Mn distribution in soil profiles can be used as a simple indicator of water flow paths in soils and over the landscape; however, it does require sufficient soil sampling (by excavation or augering) to possibly infer landscape-scale subsurface flow paths. In areas where subsurface interface topography varies similarly with surface topography, surface DEM can be used to simulate potential subsurface lateral flow path reasonably so the cost associated with obtaining depth to subsurface water-restricting layer can be minimized.

show abstract

A GIS-based method to calculate flow accumulation by considering dams and their specific operation time

Cited by 57 publications

References 11 publications

Enrichment of logging gaps with moabi (Baillonella toxisperma Pierre) in a Central African rain forest

Enrichment of logging gaps with moabi (Baillonella toxisperma Pierre) in a Central African rain forest

Assessing the potential effect of different land cover management practices on sediment yield from an abandoned farmland catchment in the Spanish Pyrenees

Simulation and validation of concentrated subsurface lateral flow paths in an agricultural landscape

Contact Info

Product

Resources

About