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Harris County Records Memo

Memo for restrict flood bond projects to municipalities.

IDM Chapter 9.2.01 Supplement

Chapter 9.2.01 supplement for design rainfall events, pipe sizes and placement, and inlet

Current Groundwater Plant Design Guidelines

Current groundwater plant design guidelines (effective Oct. 1, 2021)

Last updated: July 1, 2021

2022 IDM Cover Letter and Executive Summary

Executive summary and cover letter for the 2022 edition of the Infrastructure Design Manual

 

Last updated: July 1, 2022

2022 IDM Redlines
2023 Review Cycle IDM Redlines

2022-2023 Review Cycle Infrastructure Design Manual Redlines

Updated 11-27-2023

IDM Chapter 9 Storm Detention Supplement

This supplement modifies storm detention requirements in Chapter 9 of the Infrastructure Design Manual (IDM).

 

Last updated: March 17, 2021

IDM Chapter 9 storm detention cover letter

Cover letter explaining the supplemental changes made to Chapter 9 of the Infrastructure Design Manual.

 

Last updated: January 26, 2021

2023 Cover Letter & Executive Summary

2023 Cover Letter and  Executive Summary

Updated November 27, 2023

2023 Division 02-16 Standard Construction Specifications

The 2023 edition of Division 02-16 Standard Construction Specifications

 

Last updated: November 21, 2023