Journal Pre-proofs Research papers Commemorating the 50 th Anniversary of the Freeze and Harlan (1969) Blueprint for a physically-based, digitally-simulated hydrologic response model Craig T. Simmons, Philip Brunner, René Therrien, Edward A. Sudicky PII: S0022-1694(19)31044-3 DOI: https://doi.org/10.1016/j.jhydrol.2019.124309 Reference: HYDROL 124309 To appear in: Journal of Hydrology Received Date: 7 September 2019 Revised Date: 30 October 2019 Accepted Date: 31 October 2019 Please cite this article as: Simmons, C.T., Brunner, P., Therrien, R., Sudicky, E.A., Commemorating the 50 th Anniversary of the Freeze and Harlan (1969) Blueprint for a physically-based, digitally-simulated hydrologic response model, Journal of Hydrology (2019), doi: https://doi.org/10.1016/j.jhydrol.2019.124309 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier B.V.