Hydraulics Design Manual

This Hydraulics Design Manual (HDM) provides policies, practices and guidance used by the Oregon Department of Transportation for the hydraulic design of highway facilities.

Full Manual - Hydraulics Design Manual

Appendixes

Appendix A - Hydraulic Design Deviation Form

Plate 1 - Plan and Profile for Storm Drain Example Problem

Appendix A - Rainfall Intensity - Duration - Recurrence Interval Curves

Plate 1 - Rainfall IDR Curve Zone

Plate 1A - Rainfall IDR Curve Zone with Mile Points

Plate 1 - Northwest Flood Region Boundary

Plate 2 - Mean Annual Precipitation in Easter Oregon

Oregon Engineering Handbook

Urban Hydrology for Small Watersheds

Appendix H - Oregon 24-Hour Precipitation Maps

Plate 7 - 1,000-Year, 24-Hour

Appendix I - 2-Year, 7-Consecutive Day Low Flows

Table 2 - 2-Year, 7-Consecutive Day Low Flow Discharges for Eastern Oregon