BMP Menu

BMP Menu for Phosphorus Removal

City of Mankato
BMP Menu for Phosphorus Removal 

BMP
(with link to USEPA)
Phosphorus Removal Range
(from Minnesota Stormwater Manual)

Conservation Easements
Easements protecting or limiting the development of land.

No set amount, but prevents additional P from entering the stormwater system. 

Low Impact Development
Reduces the impact of development and works to maintain predevelopment hydraulic conditions.

No set amount, but prevents additional P from entering the stormwater system. 

Grassed Swales
Vegetated, open-channel designed to treat and attenuate runoff.

0-45%

Porous Pavement
Pavement allowing stormwater to infiltrate to a subsurface reservoir

50-100%

Stormwater Wetlands
Constructed wetlands similar in function to wet ponds.

40-75%

Wet Ponds
Constructed basins that settle out sediment and attenuate flows.

50-75%

Rain Garden
Landscape feature that promotes treatment of stormwater. Best when constructed off-line for the Mankato area

65% -85%

Landscaping and Lawn Care
Educating homeowners and lawn care professionals about impact of landscaping and lawn care activities

No set amount, but prevents additional P from entering the stormwater system. 

Residential Car Washing
Educating the public on the impact of wash water entering the stormwater system.

No set amount, but prevents additional P from entering the stormwater system. 

Storm Drain Marking
Painting catch basins with a warning to not place pollutants into the drain

No set amount, but prevents additional P from entering the stormwater system. 

Stream Cleanup and Monitoring
Opportunity for public to become involved in water pollution prevention by collecting trash along the stream.

No set amount, but prevents additional P from entering the stormwater system. 

Parking Lot and Street Cleaning
Removes sediment from roadways minimizing what enters the storm drain system. 

No set amount, but prevents additional P from entering the stormwater system. 

Storm Drain System Cleaning
Cleaning reduces the amount of pollutants, trash and debris in the system

No set amount, but prevents additional P from entering the stormwater system.