Stormwater Atlas

Virginia Department of Transportation (VDOT)

VDOT Drainage Manual — Chapter 11 Stormwater Management

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Heuristic agency extract from prepared text. VDOT Drainage Manual Chapter 11 Stormwater Management (July 2026). Full combined PDF ~161MB deferred.

Fields not found in document: design_criteria.required_hydrologic_hydraulic_software
Other manuals in Virginia: Arlington County, City of Alexandria, City of Charlottesville, City of Chesapeake, City of Norfolk, City of Richmond, City of Roanoke, Fairfax County, Virginia Department of Environmental Quality (DEQ)

Document Metadata

Jurisdiction level
State

No evidence cited

State
Virginia

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Version / edition
July 2026

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Adoption / effective date
Not found in document

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Last revised date
Not found in document

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Relationship to state manual
independent

No evidence cited

Design Criteria

Design storm return periods (years)
2-year, 10-year, 100-year

“lated sediment removed about every 5 to 10 years or as necessary based upon a SWMF inspection. Chapter 11-11 of 158 11.4 Part V”

Water quality volume method
Water Quality Volume Computation and BMP Selection Procedure

“Water Quality Volume Computation and BMP Selection Procedure”

Peak flow calculation method(s)
Rational Method, NRCS / SCS Curve Number (TR-55), TR-20, Modified Rational Method

“............. 11-80 11.5.7.1.1 Modified Rational Method, Simplified Triangular Hydrograph ................. 11-80 Routing ......”

Hydrologic/hydraulic software
Not found in document

No evidence cited

Approved BMP categories
Bioretention, Wet Pond, Extended Detention, Filter Strip, Permeable Pavement, Constructed Wetland, Detention Basin

“Bioretention, Wet Pond, Extended Detention, Filter Strip”