Sloped Drain

Sloped Drain POLLUTANTS ADDRESSED: Sediments

ALTERNATIVE MANAGEMENT MEASURES Detention Basin Erosion Control Fabric Irrigation System, Tailwater Recovery

DESCRIPTION: A sloped drain is a pipe to convey water from one elevation to a lower one without erosion.

LOAD REDUCTION MECHANISM: Sediment Reduction – Because the water conveyed by the drain does not flow directly over the land, erosion is prevented and thus sedimentation does not occur.

PERMITTING REQUIREMENTS: Contact county representative

LAND USE CLASSIFICATION: Construction sites Agricultural lands Mining areas

POTENTIAL TREATMENT AREAS: Agricultural Lands Developed Lands

ADDITIONAL BENEFITS: Water is directed to areas of need.

Arid Southwest BMP

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Sloped Drain POLLUTANTS ADDRESSED: Sediments

Level 300: MILD ENGINEERING LOAD REDUCTION POTENTIAL: LOW

MEDIUM

Riparian Planting Zone: Bank, Overbank and Transition Zones.

HIGH

ESTIMATED TIME FOR LOAD REDUCTION: IMMEDIATE

MONTHS2 YEARS

SOURCES OF ADDITIONAL INFORMATION:

> 2 YEARS

TMDL Water Quality Study of the Virgin River Watershed, submitted to Utah Department of Environmental Quality, Division of Water Quality. http://www.waterquality.utah.gov/TMDL/Duchesne_River _Watershed_TMDL.pdf

EXPECTED MAINTENANCE: LOW

MEDIUM

HIGH

ESTIMATED COST: LOW

MEDIUM

HIGH

PLANNING AND IMPLEMENTATION: Sloping drains should be engineered with enough capacity to carry expected flows. If not, water will flow around them creating erosion and threatening the drain.

Inlets should regularly be cleared of debris.

Arid Southwest BMP

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