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Line 1: − {{float right|{{#widget:YouTube|id=P1JbuPlT7m4}}}} − {{TOClimit|2}} − − − This article gives tips on the design and installation of monitoring wells into LID practices. It does not address the much deeper wells used to monitor groundwater levels. − Monitoring wells are frequently installed on infiltrating systems such as [[bioretention]], [[bioswales]], [[infiltration trenches]] and hybrids thereof. − The two questions most frequently addressed are: − {{Textbox|1= − #How quickly is surface ponding being infiltrated beneath the surface? − #How quickly is the facility draining through exfiltration to native soils and/or through an [[underdrain]]? − }} − − ==Shallow wells== − To measure the depth of ponding and the rate at which the ponding water infiltrates, install a shallow well with a water level logger: − * Use a perforated pipe (a piezometer) that will allow surface water to enter the well but will help prevent sediment from accumulating within it. − * Locate the well where ponding occurs first - near the [[inlet]] or the lowest point in the feature. − * Measure where the ground surface is relative to where you will be taking your water level measurements. − * Ensure there is a small reservoir in the well to keep your level probe submerged in dry conditions. This practice will also help with calibration. − − Line 41:
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File:Shallow monitoring well.png |thumb|600px|Cross-section view of a bioretention cell with a shallow monitoring well. For furthur details click here for [https://sustainabletechnologies.ca/app/uploads/2016/08/LID-IM-Guide-2016-1.pdf STEP's, Low Impact Development Stormwater Management Practice Inspection and Maintenance Guide (Pg. 195 - 204).] <span style="color:red">''A note: The following is an "image map", feel free to explore the image with your cursor and click on highlighted labels that appear to take you to corresponding pages on the Wiki.''</span>
File:Shallow monitoring well.png |thumb|600px|Cross-section view of a bioretention cell with a shallow monitoring well. For furthur details click here for [https://sustainabletechnologies.ca/app/uploads/2016/08/LID-IM-Guide-2016-1.pdf STEP's, Low Impact Development Stormwater Management Practice Inspection and Maintenance Guide (Pg. 195 - 204).] <span style="color:red">''A note: The following is an "image map", feel free to explore the image with your cursor and click on highlighted labels that appear to take you to corresponding pages on the Wiki.''</span>
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{{TOClimit|2}}
This article gives tips on the design and installation of monitoring wells into LID practices. It does not address the much deeper wells used to monitor groundwater levels.
Monitoring wells are frequently installed on infiltrating systems such as [[bioretention]], [[bioswales]], [[infiltration trenches]] and hybrids thereof.
The two questions most frequently addressed are:
{{Textbox|1=
#How quickly is surface ponding being infiltrated beneath the surface?
#How quickly is the facility draining through exfiltration to native soils and/or through an [[underdrain]]?
}}
==Shallow wells==
To measure the depth of ponding and the rate at which the ponding water infiltrates, install a shallow well with a water level logger:
* Use a perforated pipe (a piezometer) that will allow surface water to enter the well but will help prevent sediment from accumulating within it.
* Locate the well where ponding occurs first - near the [[inlet]] or the lowest point in the feature.
* Measure where the ground surface is relative to where you will be taking your water level measurements.
* Ensure there is a small reservoir in the well to keep your level probe submerged in dry conditions. This practice will also help with calibration.
==Deeper wells==
==Deeper wells==
|Cap||The well should be finished with a lockable cap to prevent vandalism.
|Cap||The well should be finished with a lockable cap to prevent vandalism.
|}
|}
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