Truckee Meadows (City of Reno, City of Sparks, and Washoe County)

Truckee Meadows Structural Controls Design and Low Impact Development Manual

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WQV (0.60 in) and WQF (2-year Rational) sizing criteria are explicit. Regional manual covers Reno, Sparks, and Washoe County under MS4 permit NVS000001. Pipeline excerpt repair removed 1 unlocated citation(s).

Fields not found in document: document_metadata.last_revised_date, design_criteria.required_hydrologic_hydraulic_software, document_metadata.adoption_or_effective_date

Other manuals in Nevada: Carson City, Clark County Regional Flood Control District

Document Metadata

Jurisdiction level

City

“City of Reno, City of Sparks, and Washoe County, Nevada”
Cover

State

Nevada

“Reno, NV 89509”
Cover

Version / edition

April 2015 Update

“April 2015 Update”
Cover

Adoption / effective date

Not found in document

No evidence cited

Last revised date

Not found in document

No evidence cited

Relationship to state manual

independent

“Implementation of the source control and structural treatment control BMPs in this Manual will reduce pollutant loads in stormwater runoff ... to meet National Pollutant Discharge Elimination System (NPDES) permit requirements.”
Section 1.1, Page 1-1

Design Criteria

Design storm return periods (years)

2-year, 5-year, 25-year, 100-year

“structures designed to detain runoff volumes for the 5, 25 or 100-year storm”
Section 3.3, Page 3-7

Water quality volume method

Volume-based BMPs sized using WQV = (P × RV × A) / 12, where P = 0.60 inches (90th percentile precipitation depth from Reno-Tahoe International Airport data) and RV = 0.05 + 0.009I (percent impervious). Flow-based BMPs sized using WQF = peak discharge from the 2-year storm via the Rational Method (Q = CIA).

“WQV = (P*RV*A)/12 ... P = 90th percentile precipitation depth (0.60 inches) ... When 'I' equals the rainfall intensity for the 2-year storm event, Q2 = WQF.”
Section 6.3.1–6.3.2, Pages 6-3 to 6-5

Peak flow calculation method(s)

Rational Method, NRCS TR-55 Method, HEC-1

“For drainage areas greater than 100 acres, peak flow rates should be estimated using the NRCS TR-55 Method or HEC-1.”
Section 6.3.1, Page 6-4

Hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Vegetated Swales, Vegetated Buffer Strips, Infiltration Trenches, Infiltration Basins, Bioretention / Landscape Detention, Sedimentation Basins, Sand Filter Basins, Stormwater Ponds, Stormwater Wetlands, Surface Sand Filters, Underground Sand Filters, Porous Pavements, Hydrodynamic Separators, Wet Vaults, Catch Basin Inserts, Modular Wetlands, Media Filtration Systems, Rainwater Catchment, Green Roofs, Source Controls

“TC-10 Vegetated Swales ... TC-20 Infiltration Trenches ... TC-40 Sedimentation Basins ... TC-50 Stormwater Ponds ... TC-62 Porous Pavements ... MTC-10 Hydrodynamic Separators”
Section 6.8–6.9 Table of Contents, Pages ii–iii