The Green Build-out Model: Quantifying the Stormwater Management Benefits of Trees and Green Roofs in Washington, DC
"The Green Build-out Model is a planning tool that quantifies the cumulative stormwater management benefits of trees and green roofs for different coverage scenarios across the District of Columbia. It calculates potential reductions in stormwater runoff within the municipal separate storm sewer system (MS4) and the combined sewer system (CSS) that contribute to water quality impairment in the Nation’s capital."
The Green Build-out Model adds the “green component” to the existing hydrologic and hydraulic model of the District... The Green Build-out Model integrates GIS land cover data and hydrologic processes using rainfall storage and coverage areas for trees and green roofs. Interception storage for trees was based on USDA Forest Service research and modeling. The storage amount for green roofs was based on literature values."Two planning scenarios were evaluated with the Green Build-out Model and compared to existing or baseline conditions. An “intensive greening” or “Green Build-out” scenario considered adding trees and green roofs wherever it was physically possible. A “moderate greening” scenario looked at adding trees and green roofs where it was more practical and reasonable to do so. [excerpt from Abstract] - EPA Cooperative Agreement CP-83282101-0
H. Whitlow, B. Busiek, M. Sullivan, B. Deutsch (PI), A. Savineau
May 2007
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Model Project/Program, Electronic File
Stormwater Management, Infrastructure (green)
District of Columbia
Leaf characteristics, Leaf characteristics, Green roof, Green roof, Green infrastructure, Green infrastructure
SCUFR&I
