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Journal Article

Ahlfeld D. P., Sawyer C.S. 1991. Well location in capture zone design using simulation and optimization techniques. Groundwater. 28(4):507–512.

Ahlfeld D. P.. 1990. Two‐stage ground‐water remediation design. Journal of Water Resources Planning and Management. 116(4):517-529.

Kennedy MG, Ahlfeld D. P., Schmidt DP, Tobiason JE. 2006. Three dimensional modeling for estimation of hydraulic retention time in a reservoir. Journal of Environmental Engineering. 132(9):976-984.

Ahlfeld D. P., Minihane M. 2004. Storm flow from first-flush precipitation in stormwater design. Journal of Irrigation and Drainage Engineering. 130(4):269-276.

Ahlfeld D. P., Baro-Montes G. 2008. Solving unconfined groundwater flow management problems with successive linear programming. Journal of Water Resources Planning and Management. 134(5):404-412.

Ahlfeld D. P., Zafirakou A., Riefler R.G. 1998. Solution of the groundwater transport management problem by sequential relaxation. Advances in Water Resources. 21(7):591-604.

Ahlfeld D. P., Hill E.H. 1996. The sensitivity of remedial strategies to design criteria. Groundwater. 34(2):341-348.

Riefler R.G, Smets B.F, Ahlfeld D. P.. 1998. Respirometric assay for biofilm kinetics estimation: parameter identifiability and retrievability. Biotechnology and Bioengineering. 57(1):35–45.

Pulido-Velazquez D, Ahlfeld D. P., Andreu J, Sahuquillo A. 2008. Reducing the computational cost of unconfined groundwater flow in conjunctive-use models at basin scale assuming linear behaviour: The case of Adra-Campo de Dalías. Journal of Hydrology. 353(1-2):159-174.

Ahlfeld D. P., Sprong M.P. 1998. Presence of nonconvexity in groundwater concentration response functions. Journal of Water Resources Planning and Management. 124(1):8-14.

Wang W, Ahlfeld D. P.. 1994. Optimal groundwater remediation with well location as a decision variable: model development. Water Resources Research. 30(5):1605–1618.

Ahlfeld D. P., Page R.H, Pinder G.F. 1995. Optimal ground-water remediation methods applied to a superfund site: from formulation to implementation. Groundwater. 33(1):58–70.

Ahlfeld D. P.. 2004. Nonlinear response of streamflow to groundwater pumping for a hydrologic streamflow model. Advances in Water Resources. 27(4):349–360.

Ahlfeld D. P., Mulvey J.M, Dembo R.S, Zenios S.A. 1987. Nonlinear programming on generalized networks. ACM Transactions on Mathematical Software. 13(4):350-367.

Mulligan A.E, Ahlfeld D. P.. 2002. A new interior-point boundary projection method for solving nonlinear groundwater pollution control problems. Operations Research. 50(4):636-644.

Tucciarelli T., Ahlfeld D. P.. 1991. A new formulation for transmissivity estimation with improved global convergence properties. Water Resource Research. 27(2):243–251.

Jeznach LC, Tobiason JE, Ahlfeld D. P.. 2014. Modeling conservative contaminant impacts on reservoir water quality. Journal American Water Works Association. 106(6):E295-E306.

Ji W., Dahmani A., Ahlfeld D. P., Lin J.D, Hill E.. 1993. Laboratory study of air sparging: air flow visualization. Groundwater Monitoring & Remediation. 13(4):115–126.

Adams R, Ahlfeld D. P., Sengupta A. 2007. Investigating the potential for ongoing pollution from an abandoned pyrite mine. Mine Water and the Environment. 26(1):2-13.

Ahlfeld D. P.. 1998. Interpretation of the dual program for optimal groundwater hydraulic control. Journal of the American Water Resources Association. 34(1):195–206.

Ahlfeld D. P., Hoque Y. 2008. Impact of simulation model solver performance on ground water management problems. Groundwater. 46(5):716-726.

Riefler R.G, Ahlfeld D. P.. 1996. The impact of numerical precision on the solution of confined and unconfined optimal hydraulic control problems. Hazardous Waste and Hazardous Materials. 13(2):167-176.

Ahlfeld D. P., Barlow PM, Mulligan AE. 2005. GWM—A Ground–Water Management Process for the U.S. Geological Survey Modular Ground–Water Model (MODFLOW–2000). U.S. Geological Survey Open–File Report 2005–1072. :1-124.

Sawyer C.S, Ahlfeld D. P., King A.J. 1995. Groundwater remediation design using a three-dimensional simulation model and mixed-integer programming. Water Resources Research. 31(5):1373–1385.

Jeznach LC, Jones C, Matthews T, Tobiason JE, Ahlfeld D. P.. 2016. A framework for modeling contaminant impacts on reservoir water quality. Journal of Hydrology. 537:322-333.

Ahlfeld D. P., Pinder G.F. 1992. A fast and accurate method for solving subsurface contaminant transport problems with a single uncertain parameter. Advances in Water Resources. 15(2):143-150.

Ahlfeld D. P., Islam M.S. 1994. Estimating the probability of exceeding groundwater quality standards. Journal of the American Water Resources Association. 30(4):623–629.

Towler B, Hoar A, Ahlfeld D. P.. 2012. Ecohydrology and fish passage engineering: Legacy of Denil and the call for a more inclusive paradigm. Journal of Water Resources Planning and Management. 138(2):77-79.

Ahlfeld D. P., Mulvey J.M, Pinder G.F. 1986. Designing optimal strategies for contaminated groundwater remediation. Advances in Water Resources. 9(2):77-84.

Ahlfeld D. P., Mulvey J.M, Pinder G.F, Wood P.F. 1988. Contaminated groundwater remediation design using simulation, optimization, and sensitivity theory: 1. Model development. Water Resources Research. 24(3):431–441.

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