Table 5 Geospatial analysis of urban surfaces in case study locations. N/a indicates that no grid cells fell within these thickness ranges
Location | Area of exposed assets (m2) | Area sampled (m2) | Sampled area that is impervious surface (m2) | Percentage of total area that is impervious surface (%) | Extrapolated area that is impervious surface (m2) | Total area of road (m2) |
|---|---|---|---|---|---|---|
Ensenada 1–5 mm | 20,000 | 0 | n/a | n/a | n/a | 20,000 |
Ensenada > 5–10 mm | 27,000 | 0 | n/a | n/a | n/a | 27,000 |
Ensenada > 10–20 mm | 14,000 | 0 | n/a | n/a | n/a | 14,000 |
Ensenada > 20–30 mm | 14,000 | 0 | n/a | n/a | n/a | 14,000 |
Ensenada > 30–60 mm | 60,000 | 0 | n/a | n/a | n/a | 60,000 |
Ensenada > 60–100 mm | 99,000 | 0 | n/a | n/a | n/a | 99,000 |
Ensenada > 100–150 mm | 146,000 | 51,000 | 1000 | 2 | 3000 | 70,000 |
Ensenada > 150–200 mm | 5,163,000 | 1,305,000 | 26,000 | 2 | 102,000 | 146,000 |
Ensenada > 200–300 mm | 878,000 | 236,000 | 1000 | 0.4 | 3000 | 28,000 |
Ensenada > 300 mm | 15,000 | 0 | n/a | n/a | n/a | 15,000 |
VLA | 4,220,000 | 2,010,000 | 196,000 | 10 | 412,000 | 1,175,000 |
SMA | 7,530,000 | 2,550,000 | 451,000 | 18 | 1,330,000 | 1,467,000 |
JDA | 4,910,000 | 2,150,000 | 288,000 | 13 | 658,000 | 942,000 |