BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

4.3.1.7 SLOTTED CHANNEL DRAINAlternative Names: Trench DrainBMP DESIGN APPROACHPollutant SourceControlHydrologic SourceControlStormwater TreatmentSCALE OF APPLICATIONAll SFR and MFR < 1acreMFR 1-5 Acre andCICU < 5 acresMFR and CICU > 5acres and all WQIPsTYPE OF APPLICATIONTemporaryPermanentSlotted channel drain with a sediment trap on a residential driveway.DESCRIPTIONA slotted channel drain is a drain pipe placed below grade and constructed witha slot inlet along its entire length used to intercept sheet flow from paveddriveways, roads, and parking lots and convey it downstream to a treatmentand/or infiltration system. Contemporary slotted drains have removable gratesand should be installed in conjunction with some type of sediment trap toaccommodate easy maintenance.A slotted channel drain has no water quality benefit alone; however, in adeveloped watershed it is often a required component of a drainage system thatas a whole improves water quality.APPLICABILITY• Applicable for collecting stormwater runoff from all paved surfaces,particularly where there is no curb and gutter or the paved surface is toosteep to convey with an A/C swale.• Slotted channel drains are most commonly installed in driveways,intercepting stormwater before it enters the public right-of-way or stormdrain system.TRPA BMP HandbookChapter 4: BMP Toolkit2012 4.3.1.7-Slotted Channel DrainPage 1