“Technical” water retention or disconnecting downspouts and subsequent discharge

“Technical” water retention or disconnecting downspouts, followed by discharge onto paved surfaces

Effects of adaptation measures on water quality
Adaptation measure Positive effects Potential negative effects
  • Fewer sewer overflows (water square)
  • Limited decrease in air temperature
  • Pollution runoff from roads
  • More sewer overflows (slanted road)
  • Reduced permeability of paved surfaces (water square)

“Technical” water retention or disconnecting downspouts, followed by discharge onto rooftop

Effects of adaptation measures on water quality
Adaptation measure Positive effects Potential negative effects
  • Fewer sewer overflows
  • Decrease in air temperature
  • Pollution runoff from rooftops

“Technical” water retention or disconnecting downspouts, followed by underground discharge

Effects of adaptation measures on water quality
Adaptation measure Positive effects Potential negative effects
  • Fewer sewer overflows
  • Less pollution runoff into surface water