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Drainage Study

Compliments of
John W. Pritchett
David Griffin & Company, Realtors

Last updated
October 27, 2019

Copyright 2019

Northwest Highway at Tulane Drainage Study
This portion of PHSNA.org is devoted to a 2009-study regarding localized flooding in the vicinity of Northwest Highway and Edgemere Road.

Appendix 5 includes construction cost estimates of $15 million to mitigate to flooding issues.

By 2017 when the project was being considered for inclusion in the City Bond Proposal, cost estimates had escalated to $17 million.

The bond proposal eventually included $49 million “to improve and expand flood protection and storm drainage facilities.” Included within the proposal is $1,859,000 devoted to “Preston Hollow Channel, Phases 1 & 2, with Desco Drainage,” that addresses part of the needs of PHSNA.

Report including Project Scope, Existing Study Area, Drainage Model, and Summary
Appendix 1 - Drainage Area Map
Appendix 2 - Halff Associates, Inc. Effects for Drainage Relief Tulane Report
Appendix 3 - Walter P. Moore and Associates, Inc., Drainage Analysis Report
Appendix 4 - Existing Drainage Channel Layout and Pictures
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6
Appendix 5 - Estimated Construction Costs