Probabilistic Approach for Design and Hydrologic Performance Assessment of Reconstructed Watersheds
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 133, Issue 9
Abstract
The oil sands mining industry in Canada has made a commitment to reclaim mining areas to an equivalent capability to that which existed prior to mining. An essential requirement in the design of reclamation covers to meet this objective is that all covers must have a sufficient available water holding capacity (AWHC) in order to supply sufficient moisture for vegetation over the summer moisture deficit typical in the region. AWHC is currently based on static evaluations of wilting point and field capacity under a constant annual evapotranspiration demand. This paper presents an alternative probabilistic approach by which the hydrologic performance of these reclamation soil covers can be assessed. A field-calibrated water balance model is used along with the available historical meteorological record to estimate the maximum soil moisture deficit that a soil cover is able to sustain over the growing season. Frequency curves of the maximum annual moisture deficit are used to assess the probability that a cover is able to provide any particular threshold of moisture demand. The method also allows for a quantification of the predictive uncertainty of the model. The predictive uncertainty is used as a margin of safety to estimate a design value of moisture deficit for various alternative cover designs. This paper recommends procedures for a frequency-based assessment and design of reclamation soil covers in the oil sands industry. This method takes into account climatic variability as well as parameter uncertainty in estimating the soil moisture deficit.
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Acknowledgments
The writers would like to acknowledge the support of the Natural Science and Engineering Research Council (NSERC) of Canada through the Discovery Grant and the CRD program and also the support of Syncrude Canada Limited. The encouragement of Clara Qualizza, Environmental Scientist, Mildred Lake Mine, Syncrude Canada Limited, is very much appreciated. The excellent work of many graduate students is also acknowledged.
References
Albright, W. H., Benson, C. H., Gee, G. W., Roeslard, A. C., Abichou, T., Apiwantragoon, P., Lyles, B. F., and Rock, S. A. (2004). “Field water balance of landfill final covers.” J. Environ. Qual., 33(6), 2317–2332.
Barbour, S. L., Chapman, D., Qualizza, C., Kessler, S., Boese, C., Shurniak, R., Meiers, G., O’Kane, M., Hendry, J., and Wall, S. (2004). “Tracking the evolution of reclaimed landscapes through the use of instrumented watersheds—A brief history of the Syncrude Southwest 30 Overburden Reclamation Research Program.” Proc., Int. Instrumented Watershed Symp., Edmonton, Canada, ⟨www.rr.ualberta.ca/oilsands/IIWS.htm⟩.
Bastidas, L. A., Gupta, H. V., Hsu, K., and Sorooshian, S. (2003). “Parameter, structure, and model performance evaluation for land–surface schemes.” Calibration of watershed models, Q. Duan, H. V. Gupta, S. Sorooshian, A. N. Rousseau, and R. Turcotte, eds., American Geophysical Union, Washington, D.C.
Boese, K. (2004). “The design and installation of a field instrumentation program for the evaluation of soil–atmosphere water fluxes in a vegetated cover over saline/sodic shale overburden.” MS thesis, Univ. of Saskatchewan, Saskatoon, Sask., Canada.
Borsuk, M. E., Stow, C. A., and Reckhow, K. H. (2002). “Predicting the frequency of water quality standard violations: A probabilistic approach for TMDL development.” Environ. Sci. Technol., 36(10), 2109–2115.
Dilks, D. W., and Freedman, P. L. (2004). “Improved consideration of the margin of safety in total maximum daily load development.” J. Environ. Eng., 130(6), 690–694.
Elshorbagy, A. (2005). “Predicting the uncertainty of watershed models using a simple Bayesian approach.” Proc., 17th Canadian Hydrotechnical Conf., Canadian Society for Civil Engineering, Edmonton, Atta., Canada, 1–10.
Elshorbagy, A. (2006). “Multicriterion decision analysis approach to assess the utility of watershed modeling for management decisions.” Water Resour. Res., 42(9), [W09407] 1–14.
Elshorbagy, A., Jutla, A., Barbour, S. L., and Kells, J. (2005). “System dynamics approach to assess the sustainability of reclamation of disturbed watersheds.” Can. J. Civ. Eng., 32(1), 144–158.
Falkenmark, M. (1997). “Society’s interaction with the water cycle: A conceptual framework for a more holistic approach.” Hydrol. Sci. J., 42(4), 451–466.
Freer, J., Beven, K., and Ambroise, B. (1996). “Bayesian estimation of uncertainty in runoff prediction and the value of data: An application of the GLUE approach.” Water Resour. Res., 32(7), 2161–2173.
Hauser, V. L., Weand, B. L., and Gill, M. D. (2001). “Natural covers for landfills and buried waste.” J. Environ. Eng., 127(9), 768–775.
Hines, W. W., Montgomery, D. C., Goldsman, D. M., and Borror, C. M. (2003). Probability and statistics in engineering, Wiley, New York.
Jutla, A. (2006). “Hydrological modeling of reconstructed watersheds using the system dynamics approach.” MS thesis, Univ. of Saskatchewan, Saskatoon, Sask., Canada.
Jutla, A., Elshorbagy, A., and Kells, J. (2005). “Beyond rainfall–runoff modeling: Hydrologic simulation of reconstructed watersheds using system dynamics.” Proc., 17th Canadian Hydrotechnical Conf., Emonton, Alta., Canada, 11–20.
Khire, M. V., Benson, C. H., and Bosscher, P. J. (1997). “Water balance modeling of earthen final covers.” J. Geotech. Geoenviron. Eng., 123(8), 744–754.
Khire, M. V., Benson, C. H., and Bosscher, P. J. (2000). “Capillary barriers: Design variables and water balance.” J. Geotech. Geoenviron. Eng., 126(8), 695–708.
Leskiw, L. A. (2004). Land capability classification for forest ecosystems in the oil sands, Paragon Soil and Environmental Consulting Inc., Alta., Canada.
Mays, L. W. (2005). Water resources engineering, Wiley, New York.
National Research Council (NRC). (2001). Assessing the TMDDML approach to water quality management, National Academy Press, Washington, D.C.
Ormsbee, L., Elshorbagy, A., and Zechman, E. (2004). “Methodology for pH total maximum daily loads: Application to Beech Creek watershed.” J. Environ. Eng., 130(2), 167–174.
Palisade Corporation. (2004). Guide to using @RISK: Advanced risk analysis for spreadsheets, Palisade Corporation, Inc., New York.
Qualizza, C., Chapman, D., Barbour, S. L., and Purdy, B. (2004). “Reclamation research at Syncrude Canada’s mining operation in Alberta’s Athabasca oil sands region.” Proc., Int. Conf. on Ecological Restoration SER2004, Victoria, B. C., Canada, August 24–26.
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© 2007 ASCE.
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Received: Feb 27, 2006
Accepted: Jan 2, 2007
Published online: Sep 1, 2007
Published in print: Sep 2007
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