City of Santa Barbara
Storm Water BMP Technical Guidance Manual
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Fields not found in document: design_criteria.design_storm_return_periods_years
Other manuals in California: Alameda Countywide Clean Water Program (ACCWP) / City of Fremont, California, California Department of Transportation (Caltrans), California Department of Transportation (Caltrans), City of Anaheim, City of Bakersfield, City of Chula Vista, City of Long Beach, City of Oakland, City of Sacramento, City of San Diego, City of San Francisco, City of San Jose / Santa Clara Valley (SCVURPPP), City of Santa Rosa, City of Stockton / San Joaquin County, County of Los Angeles, County of Orange, Fresno Metropolitan Flood Control District, Riverside County, San Bernardino County, Tahoe Regional Planning Agency (Lake Tahoe Region)
Document Metadata
Jurisdiction level
City
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State
California
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Version / edition
December 2020
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Adoption / effective date
Not found in document
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Last revised date
2020-12
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Relationship to state manual
independent
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Design Criteria
Design storm return periods (years)
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Water quality volume method
Tiered SWMP requirements by new/redeveloped impervious area. Tier 4: retain/prevent offsite discharge for storms up to the 95th percentile 24-hour rainfall event (currently 2.4" for Santa Barbara); retain 1.2" 24-hour for replaced impervious and 2.4" for new impervious. Tier 3: peak runoff discharge rate and water quality treatment; volume reduction per Ch.6. Volume reduction that exceeds water quality treatment volume also satisfies treatment if BMPs treat runoff.
“95th percentile 24-hour rainfall event, which is currently 2.4" for Santa Barbara”
§1.4 / Tier 4
Peak flow calculation method(s)
Peak runoff discharge rate matching for Tier 3/4, BMP sizing worksheets (Ch.6)
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Hydrologic/hydraulic software
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Approved BMP categories
Bioretention / planter boxes, Permeable pavement, Infiltration basins / trenches, Rain barrels / cisterns, Bioswales / vegetated BMPs, Dry extended detention, Other Ch.6 Storm Water Runoff BMPs
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