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==Related pages== | ==Related pages== | ||
Additional References from the MSM: | Additional References from the MSM: | ||
− | https://stormwater.pca.state.mn.us/index.php/Infiltration | + | *[https://stormwater.pca.state.mn.us/index.php/Infiltration Infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Overview_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Overview_for_infiltration Overview for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Design_criteria_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Design_criteria_for_infiltration Design criteria for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Construction_specifications_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Construction_specifications_for_infiltration Construction specifications for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Operation_and_maintenance_of_stormwater_infiltration_practices | + | *[https://stormwater.pca.state.mn.us/index.php?title=Operation_and_maintenance_of_stormwater_infiltration_practices Operation and maintenance of infiltration practices] |
− | https://stormwater.pca.state.mn.us/index.php?title=Assessing_the_performance_of_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Assessing_the_performance_of_infiltration Assessing the performance of infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Calculating_credits_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Calculating_credits_for_infiltration Calculating credits for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Case_studies_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=Case_studies_for_infiltration Case studies for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=External_resources_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=External_resources_for_infiltration External resources for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=References_for_infiltration | + | *[https://stormwater.pca.state.mn.us/index.php?title=References_for_infiltration References for infiltration] |
− | https://stormwater.pca.state.mn.us/index.php?title=Requirements,_recommendations_and_information_for_using_infiltration_basin/underground_infiltration_BMPs_in_the_MIDS_calculator | + | *[https://stormwater.pca.state.mn.us/index.php?title=Requirements,_recommendations_and_information_for_using_infiltration_basin/underground_infiltration_BMPs_in_the_MIDS_calculator Underground infiltration BMPs in the MIDS Calculator] |
− | https://stormwater.pca.state.mn.us/index.php?title=Understanding_and_interpreting_soils_and_soil_boring_reports_for_infiltration_BMPs | + | *[https://stormwater.pca.state.mn.us/index.php?title=Understanding_and_interpreting_soils_and_soil_boring_reports_for_infiltration_BMPs Understanding and interpreting soils and soil boring reports for infiltration BMPs] |
− | https://stormwater.pca.state.mn.us/index.php?title=Determining_soil_infiltration_rates | + | *[https://stormwater.pca.state.mn.us/index.php?title=Determining_soil_infiltration_rates Determining soil infiltration rates] |
Infiltration is the practice of draining water into soils, typically through engineered systems such as rain gardens, infiltration basins, grass swales and detention ponds with infiltration benches. The practice of infiltration is beneficial for soils, maintaining natural hydrology, and has a significant water quality impact for downstream lakes, rivers, and ponds. The practice of infiltration can reduce the amount of pollutant runoff an area discharges and reduce the cost of polluted surface water treatment required for Minnesotans surface and groundwaters to stay clean. Infiltration practices is a key component of GI to promote the health and well-being of animals, vegetation, and the people that rely upon these waters when designing sites.
Various constructed landscapes can be used to perform infiltration. Some of the more common methods include
For further reading on different types of infiltration, Stormwater infiltration Best Management Practices and BMPs for stormwater infiltration.
Green infrastructure (GI) encompasses a wide array of practices, including stormwater management. Green stormwater infrastructure (GSI) encompasses a variety of practices primarily designed for managing stormwater runoff but that provide additional benefits such as habitat or aesthetic value.
There is no universal definition of GI or GSI (link here for more information). Consequently, the terms are often interchanged, leading to confusion and misinterpretation. GSI practices are designed to function as stormwater practices first (e.g. flood control, treatment of runoff, volume control), but they can provide additional benefits. Though designed for stormwater function, GSI practices, where appropriate, should be designed to deliver multiple benefits (often termed "multiple stacked benefits". For more information on green infrastructure, ecosystem services, and sustainability, link to Multiple benefits of green infrastructure and role of green infrastructure in sustainability and ecosystem services.
Maximizing specific green infrastructure (GI) benefits of constructed areas requires design considerations prior to installation. While site limitations cannot always be overcome, the following recommendations for a designer are given to maximize the GI benefit.
Note: Under the Minnesota Construction Stormwater Permit GI, particularly infiltration, must be considered first when selecting stormwater treatment methods. However, if Class D soils are present on the site infiltration practices cannot be used. Class A soils are the most desirable for infiltration but infiltration systems can also be successful with B or C soils. --- Maybe add a chart indicating soil penetrability of different HSG groups —
The Minnesota Stormwater Manual offers a chart to help designers with a cost-benefit analysis for infiltration linked here. The Pollution Control Agency allows for infiltration to be used as a credit source when meeting pollutant budgets for Total Suspended Solids (TSS) and Total Phosphorus (TP). The methodology for counting credits can be found here. Additional Information:
Support material Outside MSM Links to include/reference: Y - good picture graphic for infiltration and groundwater recharge and simple explanation of groundwater - https://www.usgs.gov/special-topics/water-science-school/science/infiltration-and-water-cycle
Y - Reference for part of above built table - neat pictures - https://www.ashbyma.gov/plan/subdivision%20docs/breitmaier/160923%20plans-docs/Stormwater%20Report/BMP%20-%20Infiltration%20Basin.pdf
Y - Cost benefit table - https://stormwater.pca.state.mn.us/index.php/Cost-benefit_considerations_for_infiltration
M - good guidelines for developing green infrastructure though - https://coast.noaa.gov/data/docs/digitalcoast/gi-cost-benefit.pdf
Decent picture - Infiltration and the Water Cycle | U.S. Geological Survey (usgs.gov)
Additional References from the MSM: