In　several　cities,　permeable　brick　pavement　(PBP)　plays　a　key　role　in　stormwater　management.　Although　various　hydrological　models　can　be　used　to　analyze　the　mitigation　efficiency　of　PBP　on　rainfall　runoff,　the　majority　do　not　consider　the　effect　of　multi-layered　pavement　on　infiltration　in　urban　areas.　Therefore,　we　developed　a　coupled　model　to　evaluate　the　potential　effect　of　PBP　in　reducing　stormwater　runoff　at　a　watershed　scale.　Specifically,　we　compared　the　hydrological　responses　(outflow　and　overflow)　of　three　different　PBP　scenarios.　The　potential　effects　of　PBP　on　peak　flow　(PF),　total　volume　(TV),　and　overflow　volume　(OV)　were　investigated　for　20　design　rainstorms　with　different　return　periods　and　durations.　Our　results　indicate　that　an　increase　in　PBP　ratio　reduces　both　PF　(4.2-13.5%)　and　TV　(4.2-10.5%)　at　the　outfall　as　well　as　the　OV　(15.4-30.6%)　across　networks.　The　mitigation　effect　of　PBP　on　OV　is　linearly　correlated　to　storm　return　period　and　duration,　but　the　effects　on　PF　and　TV　are　inversely　correlated　to　storm　duration.　These　results　provide　insight　on　the　effects　of　infiltration-based　infrastructure　on　urban　flooding.