Abstract
A method is proposed for utilizing the storage capacity of unconfined aquifers to increase the efficiency of existing water-supply reservoirs presently losing water to seasonal spillages. The approach proposed uses horizontal wells to control the watertable elevation in the reservoir catchments, permitting a degree of control over the discharge of the streams flowing to the reservoirs. This may provide an alternative to reservoir construction, thus avoiding loss of ecosystems or productive land. The use of horizontal wells provides a range of control options, including increasing stream discharge during summer and reducing and delaying peak discharge from rainfall events during winter. A numerical groundwater model is utilized to simulate the operation of hypothetical horizontal wells within a water supply catchment of Auckland City, New Zealand. Results suggest potential for a significant increase in summer stream flow, coupled with a reduction in winter peak discharges associated with present reservoir spillage.
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REFERENCES
Abu-Rizaiza, O. S., and Mohorjy, A. M., 1994, Use of water from the ancient Makkah galleries for irrigation: Water Resources Bull., v. 30, no. 1, p. 113-124.
Beaumont, P., 1971, Qanat systems in Iran: Bull. Intern. Assoc. Sci. Hydrol., v. 16, no. 1, p. 39-50.
Chadwick, A., and Morfett, J., 1991, Hydraulics in civil engineering (3rd edn.): Harper Collins Academic, London, 491 p.
Cleveland, T. G., 1994, Recovery performance for vertical and horizontal wells using semianalytical simulation: Ground Water, v. 32, no. 1, p. 103-107.
Craig, D. J., and Gray, I., 1985, 1st ed. Groundwater lowering by horizontal drains: Geotechnical Control Office, Hong Kong, 123 p.
Hayward, B.W., 1976, Lower Miocene stratigraphy and structure of the Waitakere Ranges and the Waitakere Group (new): N.Z. Jour. Geol. Geophys., v. 19, no. 6, p. 871-895.
Kahlown, M. A., and Hamilton, J. R., 1994, Status and prospects of Karez irrigation: Water Resources Bull., v. 30, no. 1, p. 125-134.
Kermode, L., 1992, Geology of theAuckland Urban Area: Institute of Geological & Nuclear Sciences Ltd, Lower Hutt, 63 p.
Lightfoot, D. R., 1995, Syrian qanat Romani: History, ecology, abandonment: Jour. Arid Environ., v. 33, p. 321-336.
Mau, D. P., and Winter, T. C., 1997, Estimating ground-water recharge from stream flow hydrographs for a small mountain watershed in a temperate humid climate, New Hampshire, USA: Ground Water, v. 35, no. 2, p. 291-304.
McDonald, M. G., and Harbaugh, A. W., 1988, A modular three-dimensional finite-difference ground-water flow model: Government Printing Office, Washington, D.C., Book 6, Chapter A1, 576 p.
McLaren, R. G., and Cameron, K. C., 1993, Soil science: an introduction to the properties and management of New Zealand soils: Oxford Univ. Press, Auckland, 286 p.
Rorabaugh, M. I., 1964, Estimating changes in bank storage and ground-water contribution to streamflow: Intern. Assoc. Sci. Hydrol., Publ. 63, p. 432-441.
Sawyer, C. S., and Lieuallen-Dulam, K. K., 1998, Productivity comparison of horizontal and vertical ground water remediation well scenarios: GroundWater, v. 36, no. 1, p. 98-103.
Stirling, I. F., 1979, Sheet Q11, Waitakere. New Zealand Topographical Map: Department of Lands & Survey, Wellington, New Zealand.
Zhan, H., 1999, Analytical study of capture time to a horizontal well: Jour. Hydrol., v. 217, no. 1-2, p. 46-54.
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Brown, E.J., Bardsley, E. A Model-Based Evaluation of Horizontal Wells for Improving the Functionality of an Urban Reservoir System. Natural Resources Research 11, 197–206 (2002). https://doi.org/10.1023/A:1019808705405
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DOI: https://doi.org/10.1023/A:1019808705405