Athens-Clarke County
Georgia Stormwater Management Manual (Athens-Clarke adopts GSMM)
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Compare each cited field to the official PDF before relying on it. What this means
Municipality coverage via GSMM 2016 (same pattern as Macon/Atlanta). Pipeline excerpt repair removed 1 unlocated citation(s).
Fields not found in document: document_metadata.adoption_or_effective_date, document_metadata.last_revised_date, design_criteria.required_hydrologic_hydraulic_software, document_metadata.relationship_to_state_manual
Other manuals in Georgia: Augusta, City of Atlanta, Coastal Georgia (Chatham County–Savannah region), DeKalb County, Fulton County, Georgia, Georgia, Gwinnett County, Macon
Document Metadata
Jurisdiction level
City
No evidence cited
State
Georgia
No evidence cited
Version / edition
2016 Edition
“2016 EDITION”
Title Page
Adoption / effective date
Not found in document
No evidence cited
Last revised date
Not found in document
No evidence cited
Relationship to state manual
Not found in document
No evidence cited
Design Criteria
Design storm return periods (years)
1-year, 2-year, 10-year, 25-year, 100-year
No evidence cited
Water quality volume method
Sized to treat the runoff from 85% of the storms that occur in an average year, which equates to 1.2 inches of rainfall (Water Quality Volume, WQv), or the first 1.0 inch of rainfall using runoff reduction practices to the maximum extent practicable. If the entire 1.0 inch is reduced, the water quality volume may be waived. Otherwise, the remaining runoff from the 1.2-inch event must be treated to remove at least 80% of average annual TSS.
“treating storm events of 1.2 inches or less, as well as the first 1.2 inches of runoff for all larger storm events”
111
Peak flow calculation method(s)
SCS Curve Number Method
No evidence cited
Hydrologic/hydraulic software
Not found in document
No evidence cited
Approved BMP categories
Bioretention Basin, Bioslopes, Dry Wells, Infiltration Trenches, Organic Filters, Regenerative Stormwater Conveyance, Sand Filters, Stormwater Planters/Tree Boxes, Downspout Disconnects, Site Reforestation/Revegetation, Soil Restoration, Vegetated Filter Strips, Dry Detention Basins, Dry Extended Detention Basins, Multi-Purpose Detention Basins, Stormwater Ponds, Stormwater Wetlands, Gravel Wetlands, Enhanced Dry Swales, Enhanced Wet Swales, Grass Channels, Gravity Separators, Proprietary Systems, Underground Detention, Green Roofs, Permeable Paver System, Pervious Concrete, Porous Asphalt, Rainwater Harvesting
No evidence cited