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| 40.0 |
the Skagit River will cause severe near record flooding from Rockport downstream through Sedro Woolley. Deep and swift flood waters will inundate and damage roads...farms and business and residential areas...especially Cape Horn...Hamilton...and Thunderbird. Cockreham Island...the Nookachamps and the Sterling areas will be inundated. Levees east of Sedro Woolley may be damaged. This level at this location on the Skagit corresponds to a Phase 3 flood in the Skagit County flood system. |
| 37.0 |
the Skagit River will cause major flooding from Rockport downstream through Sedro Woolley. Deep and swift flood waters will inundate many roads...farms...and some business and residential areas especially Cape Horn...Hamilton...and thunderbird. Cockreham Island...the Nookachamps area and the Sterling area will be inundated. Levees east of Sedro Woolley may be damaged. This level for this location on the Skagit corresponds to a Phase 3 flood in the Skagit County flood system. |
| 32.5 |
the Skagit River will cause flooding from Rockport downstream through Sedro Woolley. Flood waters will inundate low areas near the river...roads...and several residential areas mainly Cape Horn...Hamilton and Thunderbird. Some water will flow onto Cockreham Island and into the Nookachamps and Sterling areas. Flooding will also occur in headwaters...tributaries...and other streams within the Skagit Basin. This level for this location corresponds to a Phase 2 flood in the Skagit County flood system. |
| 28.0 |
the Skagit River will flood low areas and sections of roads along the river from Rockport downstream to Sedro Woolley. This level for this location on the Skagit corresponds to a Phase 1 flood in the Skagit County flood system. |
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Latitude: 48.524400° N,
Longitude: 121.770000° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
28 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 |
130 ft |
158 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 
