City and Borough of Juneau
Alaska Storm Water Guide (capital MS4)
CityAlaskamediumNeeds reviewCitations verified
This extraction is flagged for quality review.
Compare each cited field to the official PDF before relying on it. What this means
Municipality coverage via Alaska Storm Water Guide.
Document Metadata
Jurisdiction level
City
No evidence cited
State
Alaska
No evidence cited
Version / edition
December 2011
No evidence cited
Adoption / effective date
2011-12
No evidence cited
Last revised date
2011-12
No evidence cited
Relationship to state manual
adopts state manual directly
No evidence cited
Design Criteria
Design storm return periods (years)
1-year, 2-year, 5-year, 100-year
No evidence cited
Water quality volume method
Treat runoff from 90% of average-year storms (goal: 80% average annual post-development TSS reduction). WQv = (Rv)×(A)×(P)/12 where P is the 90% cumulative frequency rainfall depth (~0.5–1.25 in by climatic region).
“Treat runoff from 90% of average-year storms”
Alaska Storm Water Guide
Peak flow calculation method(s)
Rational Method, TR-55, WinTR-20 / SCS methods, HEC-HMS, EPA SWMM
No evidence cited
Hydrologic/hydraulic software
ILLUDAS, TR55-1986, WinTR55, WinTR20 SCS, HEC-HMS
No evidence cited
Approved BMP categories
Wet Pond, Extended Storage Pond / Dry ED Ponds, Dry Pond, Wet Vaults, Oil/Grit Separator, Dry Swale / Wet Swale, Bioretention / Infiltration
No evidence cited