Official review draft listing 40 practical monitoring candidates: 20 street flood-depth sensors and 20 manhole/sewer-watch surcharge sensors. Visible labels use field-facing sensor codes, not internal diagnostic names.
| Sensor type | Primary signal | Evidence used | Placement guidance |
|---|---|---|---|
| Street flood-depth sensor | Depth, persistence and road/access exposure at the street low point | Top-200 action rank, MCG reported waterlogging where available, critical-road overlap, population/property exposure and nearby drainage context | Install at the safest kerb/pole/wall face near the accessible low point; avoid carriageway placement. |
| Manhole/sewer-watch surcharge sensor | Exact modelled return-to-surface volume, early onset and persistence | Exact surcharge-node diagnostics, nearby landmark and ward context | Install only after the physical chamber/manhole is confirmed and safety-cleared. |
| Sensor | Ward | Lat / Lon | Nearby landmark | Flood signal | Why this location |
|---|---|---|---|---|---|
| SFD-01 MCG reported waterlogging point validated against DSS flood statistics | 9 | 28.446052 76.991622 | Saraswati Enclave reference: Side road (Main Entry From Basai Road) of GMDA Bus Stand, Sec-10 Ward 9 / Saraswati Enclave anchor | High 63.3; depth 0.36 m | Top-200 #100, high risk; modelled depth 0.36 m; critical road/access overlap (Gurgaon Rewari Narnaul Singhana Road); near Saraswati Enclave reference; mapped drain at/next to site; very high property exposure. |
| SFD-02 Model-derived street low point from the full-city flood simulation | 9 | 28.429804 77.004724 | Behrampur Road, near Tata Motors and opposite Axis Bank ATM Ward 9 coverage anchor | Very High 68.1; depth 0.41 m; persist. 567 min; vel. 0.002 m/s | Top-200 #49, very high risk; modelled depth 0.41 m; persistence 567 min; critical road/access overlap; higher population exposure; very high property exposure. |
| SFD-03 Model-derived street low point from the full-city flood simulation | 21 | 28.442062 77.072378 | Ardee City Gate No. 3 Ward 21 coverage anchor | Very High 73.2; depth 0.51 m; persist. 665 min; vel. 0.007 m/s | Top-200 #16, very high risk; modelled depth 0.51 m; persistence 665 min; critical road/access overlap (Sector Road); mapped drain within 23 m; very high property exposure. |
| SFD-04 Surcharge-linked surface flooding point from model diagnostics | 21 | 28.447577 77.080247 | Gulab Park Road near H. No. 336, Sushant Lok Ward 21 coverage anchor | Very High 68.7; depth 0.46 m; persist. 274 min; vel. 0.015 m/s | Top-200 #45, very high risk; modelled depth 0.46 m; persistence 274 min; critical road/access overlap; near Subhash Chowk Gurugram reference; mapped drain at/next to site; very high property exposure. |
| SFD-05 Surcharge-linked surface flooding point from model diagnostics | 15 | 28.393424 77.066524 | Maidawas Village | Critical 86.0; depth 0.76 m; persist. 245 min; vel. 7.004 m/s | Top-200 #1, critical risk; modelled depth 0.76 m; persistence 245 min; critical road/access overlap (Samrat Mihir Bhoj Gurjar road towards vikas marg); mapped drain at/next to site; very high property exposure. |
| SFD-06 Model-derived street low point from the full-city flood simulation | 1 | 28.482643 77.098708 | Sikenderpur near Harijan Basti Sikanderpur Metro Station Gurugram reference cluster | Very High 77.4; depth 0.69 m; persist. 658 min; vel. 0.048 m/s | Top-200 #2, very high risk; modelled depth 0.69 m; persistence 658 min; critical road/access overlap (Mehrauli Gurgaon Road); near Sikanderpur Metro Station Gurugram reference; mapped drain within 33 m; higher population exposure; very high property exposure. |
| SFD-07 Model-derived street low point from the full-city flood simulation | 15 | 28.406450 77.058921 | Rosewood City C Block | Very High 76.9; depth 0.84 m; persist. 719 min; vel. 2.925 m/s | Top-200 #3, very high risk; modelled depth 0.84 m; persistence 719 min; critical road/access overlap; mapped drain within 3 m; very high property exposure. |
| SFD-08 Model-derived street low point from the full-city flood simulation | 14 | 28.414298 77.080454 | Sushant Lok Phase 3 | Very High 76.9; depth 2.98 m; persist. 718 min; vel. 28.135 m/s | Top-200 #4, very high risk; modelled depth 2.98 m; persistence 718 min; critical road/access overlap (Golf Course Extension Road); mapped drain within 11 m. |
| SFD-09 Surcharge-linked surface flooding point from model diagnostics | 11 | 28.420800 77.039298 | South City A1 Block Malibu Town Gurugram reference cluster | Very High 76.4; depth 0.35 m; persist. 298 min; vel. 0.089 m/s | Top-200 #5, very high risk; modelled depth 0.35 m; persistence 298 min; critical road/access overlap (Sohna Road); near Malibu Town Gurugram reference; mapped drain at/next to site; very high property exposure. |
| SFD-10 Model-derived street low point from the full-city flood simulation | 35 | 28.490057 77.019551 | Sheetla Mandir Road New Rajendra Park (Rajendra Park/North proxy) reference cluster | Very High 75.8; depth 0.94 m; persist. 719 min; vel. 27.290 m/s | Top-200 #7, very high risk; modelled depth 0.94 m; persistence 719 min; critical road/access overlap (Carterpuri Road); near New Rajendra Park (Rajendra Park/North proxy) reference; mapped drain within 4 m; very high property exposure. |
| SFD-11 Surcharge-linked surface flooding point from model diagnostics | 6 | 28.499754 76.977790 | Toyota Showroom wali gali, Rajendra Park | Very High 74.0; depth 0.46 m; persist. 337 min; vel. 0.085 m/s | Top-200 #10, very high risk; modelled depth 0.46 m; persistence 337 min; critical road/access overlap; mapped drain at/next to site; very high property exposure. |
| SFD-12 Surcharge-linked surface flooding point from model diagnostics | 13 | 28.445911 77.038003 | Near House No.239 Sector-15 Part-I Rajiv Chowk Gurugram reference cluster | Very High 73.5; depth 0.67 m; persist. 618 min; vel. 0.007 m/s | Top-200 #13, very high risk; modelled depth 0.67 m; persistence 618 min; critical road/access overlap; near Rajiv Chowk Gurugram reference; mapped drain at/next to site. |
| SFD-13 Model-derived street low point from the full-city flood simulation | 14 | 28.434842 77.065782 | Sector 46 | Very High 73.5; depth 0.55 m; persist. 581 min; vel. 0.011 m/s | Top-200 #14, very high risk; modelled depth 0.55 m; persistence 581 min; critical road/access overlap (Vikas Marg); mapped drain within 2 m; very high property exposure. |
| SFD-14 Model-derived street low point from the full-city flood simulation | 2 | 28.480754 77.072565 | Indian oil service road sector 18 Sarhaul Gurugram reference cluster | Very High 73.4; depth 0.72 m; persist. 617 min; vel. 0.003 m/s | Top-200 #15, very high risk; modelled depth 0.72 m; persistence 617 min; critical road/access overlap; near Sarhaul Gurugram reference; mapped drain within 39 m. |
| SFD-15 Model-derived street low point from the full-city flood simulation | 2 | 28.480375 77.092739 | Sikanderpur entry from Bristol chowk Sikanderpur Metro Station Gurugram reference cluster | Very High 73.1; depth 0.59 m; persist. 658 min; vel. 0.008 m/s | Top-200 #17, very high risk; modelled depth 0.59 m; persistence 658 min; critical road/access overlap (Link to Faridabad Road); near Sikanderpur Metro Station Gurugram reference; higher population exposure; very high property exposure. |
| SFD-16 Surcharge-linked surface flooding point from model diagnostics | 13 | 28.441771 77.040589 | Back side Govt. School, Islampur Rajiv Chowk Gurugram reference cluster | Very High 72.6; depth 0.47 m; persist. 296 min; vel. 0.017 m/s | Top-200 #18, very high risk; modelled depth 0.47 m; persistence 296 min; critical road/access overlap (Chowdhury Baktawar Singh Road); near Rajiv Chowk Gurugram reference; mapped drain at/next to site; very high property exposure. |
| SFD-17 Surcharge-linked surface flooding point from model diagnostics | 35 | 28.482214 77.021636 | Sector 5, Part 6 | Very High 72.5; depth 0.31 m; persist. 546 min; vel. 0.004 m/s | Top-200 #19, very high risk; modelled depth 0.31 m; persistence 546 min; critical road/access overlap; mapped drain at/next to site; very high property exposure. |
| SFD-18 Model-derived street low point from the full-city flood simulation | 36 | 28.479155 77.036422 | CRPF camp chowk, | Very High 72.1; depth 0.41 m; persist. 580 min; vel. 0.021 m/s | Top-200 #20, very high risk; modelled depth 0.41 m; persistence 580 min; critical road/access overlap; mapped drain within 44 m; very high property exposure. |
| SFD-19 Model-derived street low point from the full-city flood simulation | 27 | 28.450337 77.030959 | Court road District Court Gurugram reference cluster | Very High 72.0; depth 0.83 m; persist. 679 min; vel. 0.003 m/s | Top-200 #22, very high risk; modelled depth 0.83 m; persistence 679 min; critical road/access overlap (Sohna Road); near District Court Gurugram reference; higher population exposure. |
| SFD-20 Model-derived street low point from the full-city flood simulation | 20 | 28.416774 77.088039 | F and G Block, Sushant Lok 2 | Very High 71.9; depth 1.04 m; persist. 682 min; vel. 0.011 m/s | Top-200 #24, very high risk; modelled depth 1.04 m; persistence 682 min; critical road/access overlap (Golf Course Extension Road); mapped drain within 3 m; very high property exposure. |
| Sensor | Ward | Lat / Lon | Nearby landmark | Surcharge signal | Why this location |
|---|---|---|---|---|---|
| MSW-01 Exact surcharge candidate #1; field chamber to be confirmed | 4 | 28.518913 77.038350 | Sec 23 near Ansal Plaza | volume 14,815 m3; onset 3.7 min; persist. 717 min | return-to-surface volume 14,815 m3; onset 3.7 min after rainfall begins; persistence 717 min. |
| MSW-02 Exact surcharge candidate #2; field chamber to be confirmed | 4 | 28.511202 77.059596 | In front of community centre sector 22 B | volume 1,158 m3; onset 303.2 min; persist. 637 min | return-to-surface volume 1,158 m3; onset 303.2 min after rainfall begins; persistence 637 min. |
| MSW-03 Exact surcharge candidate #3; field chamber to be confirmed | 3 | 28.514101 77.068805 | Near radha krishna mandir h.no-335 sector 21 | volume 932 m3; onset 193.5 min; persist. 676 min | return-to-surface volume 932 m3; onset 193.5 min after rainfall begins; persistence 676 min. |
| MSW-04 Exact surcharge candidate #4; field chamber to be confirmed | 4 | 28.509076 77.029850 | Palam Vihar D Block near Mother dairy | volume 1,272 m3; onset 173.3 min; persist. 686 min | return-to-surface volume 1,272 m3; onset 173.3 min after rainfall begins; persistence 686 min. |
| MSW-05 Exact surcharge candidate #5; field chamber to be confirmed | 7 | 28.480286 76.994725 | Dhanwapur Village near Bikaner Chowk | volume 2,334 m3; onset 476.2 min; persist. 342 min | return-to-surface volume 2,334 m3; onset 476.2 min after rainfall begins; persistence 342 min. |
| MSW-06 Exact surcharge candidate #6; field chamber to be confirmed | 29 | 28.455288 77.019137 | Raj Nagar Chowk | volume 793 m3; onset 491.0 min; persist. 463 min | return-to-surface volume 793 m3; onset 491.0 min after rainfall begins; persistence 463 min. |
| MSW-07 Exact surcharge candidate #7; field chamber to be confirmed | 4 | 28.503434 77.028208 | Palam Vihar D Block near Mother dairy | volume 766 m3; onset 501.3 min; persist. 563 min | return-to-surface volume 766 m3; onset 501.3 min after rainfall begins; persistence 563 min. |
| MSW-08 Exact surcharge candidate #8; field chamber to be confirmed | 34 | 28.496876 77.008017 | Gopi Pandit Wali Gali, Rajendra Park | volume 1,054 m3; onset 106.7 min; persist. 681 min | return-to-surface volume 1,054 m3; onset 106.7 min after rainfall begins; persistence 681 min. |
| MSW-09 Exact surcharge candidate #9; field chamber to be confirmed | 29 | 28.455311 77.026864 | Near Beri wala Bagh Shivaji Nagar | volume 774 m3; onset 256.6 min; persist. 642 min | return-to-surface volume 774 m3; onset 256.6 min after rainfall begins; persistence 642 min. |
| MSW-10 Exact surcharge candidate #10; field chamber to be confirmed | 4 | 28.496908 77.019083 | Palam Vihar C 2 Block | volume 3,330 m3; onset 16.2 min; persist. 700 min | return-to-surface volume 3,330 m3; onset 16.2 min after rainfall begins; persistence 700 min. |
| MSW-11 Exact surcharge candidate #11; field chamber to be confirmed | 35 | 28.486468 77.014977 | Durga sweets khedi | volume 500 m3; onset 380.8 min; persist. 658 min | return-to-surface volume 500 m3; onset 380.8 min after rainfall begins; persistence 658 min. |
| MSW-12 Exact surcharge candidate #12; field chamber to be confirmed | 17 | 28.419702 76.993413 | Behrampur Road, near Tata Motors and opposite Axis Bank ATM | volume 2,925 m3; onset 15.2 min; persist. 318 min | return-to-surface volume 2,925 m3; onset 15.2 min after rainfall begins; persistence 318 min. |
| MSW-13 Exact surcharge candidate #13; field chamber to be confirmed | 20 | 28.425164 77.100296 | E Block (Near Creek) Sec-55/56 Road | volume 376 m3; onset 389.0 min; persist. 395 min | return-to-surface volume 376 m3; onset 389.0 min after rainfall begins; persistence 395 min. |
| MSW-14 Exact surcharge candidate #14; field chamber to be confirmed | 13 | 28.449163 77.055172 | Sector 40 house no 1114 | volume 1,332 m3; onset 244.6 min; persist. 673 min | return-to-surface volume 1,332 m3; onset 244.6 min after rainfall begins; persistence 673 min. |
| MSW-15 Exact surcharge candidate #15; field chamber to be confirmed | 20 | 28.419371 77.101317 | E Block (Near Creek) Sec-55/56 Road | volume 749 m3; onset 217.6 min; persist. 284 min | return-to-surface volume 749 m3; onset 217.6 min after rainfall begins; persistence 284 min. |
| MSW-16 Exact surcharge candidate #16; field chamber to be confirmed | 4 | 28.504643 77.034111 | A block Palam vihar near Macdy | volume 490 m3; onset 495.3 min; persist. 679 min | return-to-surface volume 490 m3; onset 495.3 min after rainfall begins; persistence 679 min. |
| MSW-17 Exact surcharge candidate #17; field chamber to be confirmed | 20 | 28.425700 77.142740 | Teri Gram Faridabad road Village Baliyawas and Mujjafar Ali Farm house New Gwal Pahari | volume 363 m3; onset 531.5 min; persist. 316 min | return-to-surface volume 363 m3; onset 531.5 min after rainfall begins; persistence 316 min. |
| MSW-18 Exact surcharge candidate #18; field chamber to be confirmed | 26 | 28.479657 77.043438 | CRPF camp chowk, | volume 229 m3; onset 560.0 min; persist. 364 min | return-to-surface volume 229 m3; onset 560.0 min after rainfall begins; persistence 364 min. |
| MSW-19 Exact surcharge candidate #19; field chamber to be confirmed | 4 | 28.513585 77.032614 | Palam Vihar D Block near Mother dairy | volume 1,500 m3; onset 44.5 min; persist. 376 min | return-to-surface volume 1,500 m3; onset 44.5 min after rainfall begins; persistence 376 min. |
| MSW-20 Exact surcharge candidate #20; field chamber to be confirmed | 32 | 28.468411 77.016672 | New Colony near Gaba Kothi | volume 377 m3; onset 520.9 min; persist. 294 min | return-to-surface volume 377 m3; onset 520.9 min after rainfall begins; persistence 294 min. |