Manuals - Drainage Design

Policies and Guidelines

• Roadway Design Guidelines: Highway Drainage Policy (RDG Chapter 600)

Hydrology

• Highway Drainage Design Manual, Volume 2, Hydrology, Second Edition, 2014
  • Appendix A: Glossary
  • Appendix B: Rainfall Loss Parameters
  • Appendix C: Estimation of Vegetative Cover
  • Appendix D: Flood Frequency Examples

Hydrology Data and Application Downloads

The following are executable files that may be downloaded by users to save and run on their own computers.

• Rainfall Averaging Tool and Data
• Rational Method Tool

The following are data and shape files that may be downloaded for use in GIS or other applications.

• Soil Data Map: Status of Soil Surveys - Publication
• Soil Data: Shape files
  • Detailed Soils: Soil Survey Geographic Database (SSURGO)
    SelectAZ623AZ625AZ627AZ629AZ631AZ633AZ635AZ637AZ639AZ641AZ645AZ646AZ647AZ649AZ651AZ653AZ655AZ656AZ657AZ658AZ659AZ661AZ662AZ664AZ665AZ666AZ667AZ668AZ669AZ671AZ673AZ675AZ683AZ687AZ691AZ693AZ695AZ697AZ699AZ701AZ703AZ707AZ711AZ712AZ713AZ714AZ715NM023NM648NM662NM682NM692NM717NV608NV713NV754NV755UT634UT636UT641UT686UT689
  • General Soils: State Soil Geographic Database (STATSGO)
    SelectAZNM PartNV PartUT Part
• Rainfall: NOAA Atlas 14 Point Precipitation Frequency Estimates: AZ
• Maps
  • Arizona Major Drainage Basins
  • Major Rivers and Streams
  • Operational Drainage Frequency

Hydraulics

• Highway Drainage Design Manual, Hydraulics, Final Report 2007