Changes

'''Continuous Water Level Monitoring (Level 3)'''<br>

'''Continuous Water Level Monitoring (Level 3)'''<br>

Site infiltration rates can be measured with greater accuracy through continuous water level monitoring. This monitoring approach evaluates seasonal infiltration performance through the monitoring of temperature and groundwater levels. The following conditions and equipment are necessary for continuous water level monitoring:

Site infiltration rates can be measured with greater accuracy through continuous water level monitoring. This monitoring approach evaluates seasonal infiltration performance through the monitoring of temperature and groundwater levels. The following conditions and equipment are necessary for continuous water level monitoring:

#A perforated observation well

#A perforated observation [[Wells|well]]

#A water level logger

#A water level logger

#A rain gauge within 5 km of the site

#A rain gauge within 5 km of the site

Using rainfall and water level data can provide an understanding of drawdown times after variously sized storms.

Using [[Understanding rainfall statistics|rainfall]] and water level data can provide an understanding of drawdown times after variously sized storms.

[[File:Large bioretention Meadows in the Glen .JPG|300px|thumb|right|rainfall data and water level measurements can be used to assess infiltration performance. (Photo Source: CVC, 2015)]]

[[File:Large bioretention Meadows in the Glen .JPG|300px|thumb|right|rainfall data and water level measurements can be used to assess infiltration performance. (Photo Source: CVC, 2015)]]

'''Long-term Monitoring (Level 4)'''<br>

'''Long-term Monitoring (Level 4)'''<br>

High-intensity monitoring is a comprehensive but expensive approach to assessing peak flow reduction and water volume reduction during natural runoff events. These reductions can be quantified by completing a water budget during natural storm events, specifically through the measurement of inflow and outflow. Pollutant load reductions can also be quantified with the appropriate technology. Long-term monitoring is especially recommended if the LID feature that is the subject of the test is the first of its kind in its given jurisdiction, if geologic conditions pose a concern, or if the feature is being implemented to protect sensitive and significant natural features.

High-intensity monitoring is a comprehensive but expensive approach to assessing peak flow reduction and water volume reduction during natural runoff events. These reductions can be quantified by completing a water budget during natural storm events, specifically through the measurement of inflow and outflow. Pollutant load reductions can also be quantified with the appropriate technology. Long-term monitoring is especially recommended if the LID feature that is the subject of the test is the first of its kind in its given jurisdiction, if geologic conditions pose a concern, or if the feature is being implemented to protect sensitive and significant natural features.

==References==

==References==

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