HomeMy WebLinkAboutRain Garden FAQTEMPORARYPONDING DEPTH
(6” TO 12” TYPICAL)
EXISTING SOILRAIN GARDEN SOIL MIX
GRADUAL
SIDE SLOPES
MULCH LAYER
OVERFLOW
INFLOW
What is a rain garden and why do I
have one in my front yard?
A rain garden is a landscaped area designed to
collect, absorb, and filter stormwater runoff
from impervious surfaces such as rooftops,
driveways, and patios. By allowing water to soak
naturally into the ground, rain gardens help
reduce flooding, erosion, and pollution in local
waterways.
When new homes or developments are
constructed, regulations require stormwater
management solutions to be built to control
runoff and protect the environment. Rain gardens
are one of several engineered solutions commonly
used to meet these requirements. They are
designed by engineers who evaluate factors such
as soil infiltration rates, stormwater flows, site
constraints, and site-specific drainage needs.
Can I remove my rain garden?
Because rain gardens are engineered features
required to meet stormwater regulations, you
cannot remove them without first hiring a
licensed engineer to design an alternative
stormwater management plan for your property.
You or your engineer will then need to contact
the Development Engineering Division and apply
for a stormwater permit. The proposed alternative
to the rain garden will be reviewed to ensure it
complies with the Surface Water Design Manual.
After the city approves the alternative system,
you may proceed with removing the rain garden
and implementing the new
stormwater solution.
Scan the QR code to visit our
webpage for more information.
Questions? Call: 425-430-7294 or email: developmentengineering@rentonwa.gov
RAIN GARDENS