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Drainage Manual

Drainage Manual

The Drainage Manual was developed to provide guidance for the design of MDOT drainage facilities. The purpose of this manual is to serve as a contract and training document for MDOT development and delivery personnel. This manual also meets stormwater best management practices required by MDOT’s stormwater management program.

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Cover/Acknowledgements

  1. Introduction
  2. Legal Policy and Procedures
    1. Symbols and Acronyms
    2. Federal Policies and Law
    3. National Flood Insurance Program
    4. County Drains and Roads Guidelines
      1. Attachment C: Michigan Drain Code Procedures
    1. Corps Jurisdiction Listings for Section 404, Section 9 and 10, Rivers and Harbors
    2. State Executive Order 1977-4
  3. Hydrology
    1. Symbols and Acronyms
    2. MDOT Rainfall Tables
      1. Atlas 14 - Intensity-Duration-Frequency (IDF)
    3. Computing Flood Discharge for Small Ungaged Watersheds
    4. Wetland Hydrology - The Water Budget
  4. Natural Channels and Roadside Ditches
    1. Symbols and Acronyms
    2. MDEQ Cross Section Guidelines (Modified by MDOT)
    3. Open Channel Theory
  5. Culverts
    1. Symbols and Acronyms
    2. Tables of Manning's n, Loss Coefficients and Worksheets
    3. Culvert Design Charts
    4. Culvert Design Table
  6. Bridges
    1. Symbols and Acronyms
    2. Summary Hydraulic Analysis Form
    3. MDOT Hydraulic Report Format and Supporting Documents
    4. MDOT Guidelines for Evaluation of Scour and Scour Analysis Worksheets
  7. Road Storm Drainage Systems
    1. Symbols and Acronyms
  8. Stormwater Storage Facilities
    1. Symbols and Acronyms
  9. Stormwater Best Management Practices (BMPs)
    1. Symbols and Acronyms
    2. Cost List for MDOT Approved BMPs
  10. Pump Stations
    1. Symbols and Acronyms
    2. Pump Station Hydraulic Design Example

Glossary

Master Table of Contents

List of Revisions

Archived Sections