USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

7: Hydrology and Hydraulics

Chapter_07.pdf (952.16 KB)

– CFL Supplements
– WFL Supplements

PDDM Chapter 7

  • Section 7.1 - General
    • 7.1.1 - Quick Reference Guide
    • 7.1.2 - Project Management and Coordination
    • 7.1.3 - Reconnaissance and Scoping
    • 7.1.4 - Risk Considerations
    • 7.1.5 - Baseline vs. Proposed Conditions
    • 7.1.6 - Design Standards and Criteria
    • 7.1.7 - Capacity vs. Stability Design
    • 7.1.8 - Design and Check Floods
    • 7.1.9 - Design Exceptions/Variances
    • 7.1.10 - Quality Control and Quality Assurance
    • 7.1.11 - Documentation and Deliverables
    • 7.1.12 - Applicable Laws
  • Section 7.2 - Hydrology
    • 7.2.1 - References
    • 7.2.2 - Design Standards
    • 7.2.3 - Design Guidance
    • 7.2.4 - Recommended Methods for Estimating Peak Flow
    • 7.2.5 - Recommended Methods for Computing Hydrographs
    • 7.2.6 - Reporting
  • Section 7.3 - Roadway Hydraulics
    • 7.3.1 - Culverts
    • 7.3.2 - Ditches
    • 7.3.3 - Pavement Drainage
    • 7.3.4 - Storm Drains
    • 7.3.5 - Outlet Protection
    • 7.3.6 - Alternative Pipe Materials
  • Section 7.4 - River Hydraulics
    • 7.4.1 - Floodplain Encroachments
    • 7.4.2 - Scour and Stream Stability
    • 7.4.3 - Bridged Waterways
    • 7.4.4 - Longitudinal Embankments
    • 7.4.5 - Retaining Walls
    • 7.4.6 - Low-Water Crossings
    • 7.4.7 - Channel Changes
    • 7.4.8 - Scour and Stream Instability Countermeasures
    • 7.4.9 - Energy Dissipators
  • Section 7.5 - Environmental Hydraulics
    • 7.5.1 - Aquatic Organism Passage
    • 7.5.2 - Stream Restoration and Rehabilitation
    • 7.5.3 - Wetlands
    • 7.5.4 - Stormwater Management
  • Section 7.6 - Coastal Hydraulics
    • 7.6.1 - General
    • 7.6.2 - Hydrology
    • 7.6.3 - Floodplain Encroachments
    • 7.6.4 - Scour and Stream Stability
    • 7.6.5 - Bridged Waterways
    • 7.6.6 - Roadway Embankments
    • 7.6.7 - Scour and Stream Instability Countermeasures