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| 36.0 |
The Port Authority of Pittsburgh subway system is affected |
| 31.0 |
Water reaches the railroad tracks at Station Square on the South Side |
| 30.0 |
Point State Park is flooded to the Portal Bridge |
| 29.0 |
River Avenue on the North Side begins to flood |
| 25.0 |
The Parkway Central is closed by flooding |
| 22.0 |
The Tenth Street Bypass floods |
| 20.0 |
Water is up to one foot deep in the lower areas of the North Shore Riverwalk |
| 19.0 |
Water begins to flow onto the North Shore Riverwalk between the stadiums |
| 18.0 |
Water begins to flow onto the Monongahela Parking Wharf |
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Latitude: 40.441666° N,
Longitude: 80.013333° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
25 ft |
Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps |
| Vertical Datum |
Elevation
(gauge height = 0) |
Elevation
(gauge height = flood stage) |
Elevation information source |
| NAVD88 |
N/A |
N/A |
Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps |
| NGVD 29 |
694.23 ft |
719.23 ft |
Older USGS topographic maps, NGVD29 benchmarks |
| MSL |
N/A |
N/A |
Older USGS topographic maps, MSL benchmarks |
| Other |
N/A |
N/A |
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Hydrologic Resources
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Additional Resources
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. |
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NWS Information |
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weather.gov 
