City of Clarksville

Storm Water Management Manual

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Compare each cited field to the official PDF before relying on it. What this means

Archive ADID=1469 labeled Stormwater Manual 2021 on city page; extracted PDF revision history tops out at Oct 2014 chapter updates. Large truncated text — medium confidence.

Other manuals in Tennessee: City of Chattanooga, City of Franklin, City of Knoxville, City of Memphis and Shelby County, City of Murfreesboro, Metropolitan Nashville and Davidson County, Tennessee, Tennessee Department of Environment and Conservation

Document Metadata

Jurisdiction level

City

No evidence cited

State

Tennessee

No evidence cited

Version / edition

June 2014 / October 2014 chapter updates (Archive ADID 1469)

“June 2014 / October 2014 Updated Chapter 4... Chapter 9, Post Construction”
Revision History

Adoption / effective date

2000-08-01

“August, 2000 Manual adopted by reference by Ordinance 3-2000-01”
Revision History

Last revised date

2014-10-01

No evidence cited

Relationship to state manual

independent

“independent city stormwater management manual”
Coverage note

Design Criteria

Design storm return periods (years)

1-year, 2-year, 10-year, 25-year, 100-year

“Q2-yr / Q10-yr preliminary hydrologic calculations; 25-year spillway example”
Design examples

Water quality volume method

WQv = (1.11") (Rv) (A) / 12 with Rv = 0.05 + 0.009(I). Chapter 9 covers post-construction stormwater quality, runoff reduction credits, bioretention, water quality swales, and related BMPs. Water quality buffers in Chapters 5/10.

“WQv = (1.11”) (Rv) (A) ... Rv = 0.05 + (I) (0.009)”
Ch. 9 example / WQv calc

Peak flow calculation method(s)

SCS / TR-20 / HEC-HMS procedures, Mandatory storm water dry detention (Ch. 7), IDF / regression equations (Ch. 7 updates)

No evidence cited

Hydrologic/hydraulic software

TR-20, HEC-HMS, HEC-1

No evidence cited

Approved BMP categories

Bioretention, Water quality swales, Dry detention, Wet detention / retention, Permeable pavement, Catchbasin inserts, Stormwater credits / runoff reduction

“9.7 Bioretention; 9.10 Water Quality Swales; permeable pavement specification”
Ch. 9 TOC