What this site is
Everbrook is a static reference site covering the design and construction of shallow planted infiltration basins — commonly called rain gardens — for managing roof runoff and driveway stormwater in Polish conditions. The content focuses on three practical areas: basin sizing, soil composition, and plant selection.
The material is written for property owners, landscape designers, and civil engineers working on small-scale stormwater management at the parcel level. It does not cover municipal infrastructure or large-scale engineered wetlands.
Scope and limitations
Rain garden design involves site-specific variables — soil permeability, seasonal water table depth, frost penetration, and local rainfall intensity — that cannot be fully addressed in a general reference. The calculations and guidelines presented here reflect published methods from sources including the US EPA Low Impact Development manual, Polish hydrological literature, and peer-reviewed research on bioretention in temperate European climates.
All numerical values should be verified against site conditions before construction. Percolation testing and review by a qualified professional are recommended for any installation larger than 25 m².
Data sources
Rainfall data referenced on this site comes from publicly available IMGW (Institute of Meteorology and Water Management) station records. Soil classification references follow the Polish standard PTG 2009 and FAO soil taxonomy. Plant ecology references draw on Flora Polska and published phytosociological surveys of Polish wetland and riparian communities.
Images are sourced from Wikimedia Commons under Creative Commons licences and used in accordance with their respective terms.
Contact
Questions about specific site conditions or design methods can be submitted via the contact form on the home page.
For general reference on Polish stormwater regulation, see the Polish Geological Survey (PGA) and IMGW resources.
Disclaimer
The information on this site is provided for reference purposes. It does not constitute engineering advice. Application of any method described here to a specific site is the responsibility of the designer or property owner.