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| 13.0 |
the Cowlitz River will cause severe near record flooding from the upper reaches of the river downstream through Packwood...with dangerous inundation of residential and commercial areas...roads...and farms throughout the flood plain. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Cowlitz River Basin. |
| 12.0 |
the Cowlitz River will cause major flooding from the upper reaches of the river downstream through Packwood...with dangerous flooding of roads including US Highway 12...pasture lands...and farms throughout the flood plain. Flood waters will inundate some residential and commercial areas. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Cowlitz River Basin. |
| 11.0 |
the Cowlitz River will cause flooding from the upper reaches of the river downstream through Packwood...inundating roads...pasture lands...and some farms. |
| 10.5 |
the Cowlitz River will cause minor flooding from the upper reaches of the river downstream through Packwood...covering several roads along the river and nearby pasture lands. |
| 10.0 |
the Cowlitz River will spill over its banks into nearby low pasture lands from the upper reaches downstream through Packwood. |
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Latitude: 46.613100° N,
Longitude: 121.678000° W,
Horizontal Datum:
NAD83
River Stage
Reference Frame |
Gauge Height |
Flood Stage |
Uses |
| NWS stage |
0 ft |
10.5 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 |
1048 ft |
1058.5 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 
