LAND AS THE RESOURCE - Low Impact Development and Sustainable Stormwater Management - page 69

Figure 3-16 The Portland ''downspout disconnect'' program has made 50,000 such
changes and prevented over 1 billion gallons per year from entering their combined sewers.
(Courtesy of Portland Department of Environmental Services).
Catch basin
Sedimentation
manhole
Standard
stormwater
sump system
Figure 3-17 Infiltration sump design used in Portland, Oregon. (Courtesy of Portland
Department of Environmental Services).