City of High Point
Stormwater Best Management Practices Design Manual
CityNorth CarolinahighNoCitations verified
Other manuals in North Carolina: Charlotte-Mecklenburg, City of Asheville, City of Concord, City of Durham, City of Gastonia, City of Greensboro, City of Raleigh, City of Wilmington, City of Winston-Salem, North Carolina Department of Environmental Quality (NCDEQ), North Carolina Department of Transportation (NCDOT), Town of Cary
Document Metadata
Jurisdiction level
City
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State
North Carolina
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Version / edition
Effective January 1, 2009
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Adoption / effective date
2009-01-01
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Last revised date
Not found in document
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Relationship to state manual
adopts state manual directly
“the City of High Point has adopted the Division of Water Quality’s Stormwater Best Management Practices Manual”
Introduction
Design Criteria
Design storm return periods (years)
10-year, 100-year
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Water quality volume method
Adopts NC DWQ/DEQ Stormwater BMP Manual jurisdiction-wide (Phase II). WS-IV high-density: control first 1" of rainfall (and 85% TSS) where BUA >24% (or >12% in lower Randleman). City-extra: developments with BUA between 6% and those thresholds require additional BMPs controlling the first ½" (natural infiltration, dry detention, infiltration trenches). Wet detention principal spillway = 10-year pre-development; emergency spillway = 100-year; ≥1 ft freeboard to dam crest.
“must control the first 1” of rainfall ... Additional BMPs ... control the first ½” of rainfall”
Introduction
Peak flow calculation method(s)
NCDEQ / DWQ BMP Manual methods, Wet detention: post ≤ pre 10-year principal spillway, Emergency spillway sized for 100-year
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Hydrologic/hydraulic software
Not found in document
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Approved BMP categories
NCDEQ / DWQ BMP Manual practices, Wet detention basins (city extras), Natural infiltration areas, Dry detention ponds, Infiltration trenches, Other BMPs controlling first 0.5" rainfall
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