What is a infiltration trench?
Description: An infiltration trench is a rock-filled trench with no outlet that receives stormwater runoff. Runoff is stored in the void space between the stones and infiltrates through the bottom and into the soil matrix. The primary stormwater re- moval mechanism of this practice is filtering through the soil.
What is infiltration basin?
An infiltration basin is a water impoundment over permeable soils which receives stormwater runoff and contains it until it infiltrates the soils. These basins remove fine sediment and the pollutants associated with them.
What is a infiltration basin used for?
An infiltration basin (also known as a recharge basin or in some areas, a sump or percolation pond), is a type of device that is used to manage stormwater runoff, prevent flooding and downstream erosion, and improve water quality in an adjacent river, stream, lake or bay.
What does infiltration mean in groundwater?
Infiltration is the process by which water on the ground surface enters the soil. Infiltration rate in soil science is a measure of the rate at which a particular soil is able to absorb rainfall or irrigation. It is measured in inches per hour or millimeters per hour.
What is a rapid infiltration basin?
Rapid Infiltration Basins (RIBs) are permeable earthen basins, designed and operated to treat and disperse treated effluent from municipal wastewater treatment facilities. RIBs are typically used in rural Nevada in conjunction with wastewater pond systems or small package wastewater treatment plants.
What is infiltration in geography?
Infiltration – Water soaks or filters into the soil. Surface runoff – Water moves across the surface of the earth becoming a stream, tributary or river. Percolation – Water moving from the soil into the spaces (pores) in the rock.
Why do trenches drain?
A trench drain consists of a trench to channel water away from the house or other area and a decorative trench grate over the top. This grate allows traffic to move over the trench, while also adding a decorative element to the landscape. A trench drain can prevent excess water from coming too close to buildings.
How are exfiltration trenches different from infiltration trenches?
While infiltration trenches are usually rock filled ditches into which stormwater enters from the top, exfiltration trenches often involve a pipe in the middle of the trench through which stormwater enters. Objectives: These structures capture and discharge stormwater at a controlled rate.
What makes an infiltration trench a BMP?
An Infiltration Trench is a linear stormwater BMP consisting of a continuously perforated pipe at a minimum slope in a stone-filled trench. Usually an Infiltration Trench is part of a conveyance systemand is designed so that large storm events are conveyed through the pipe with some runoff volume reduction.
What is the definition of an infiltration basin?
An infiltration basin is defined as an open impoundment (greater than 15 feet wide in its minimum dimension) created either by excavation or embankment with a flat, densely vegetated floor dedicated to the infiltration of runoff through the ground surface. 1 II. Purpose be
What makes an infiltration system a stormwater drainage well?
DEQ considers infiltration systems to be stormwater drainage wells if they meet one of the following criteria: An infiltration trench or subsurface infiltration system whose depth is larger than its smallest surface dimension.