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| SEATTLE, PUGET SOUND, WA | Station ID: 9447130 |
Station Information
| Latitude: 47° 36.1' N |
Mean Range: 7.66 ft. |
| Longitude: 122° 20.3' W |
Diurnal Range: 11.36 ft. |
| Established: Jan 1 1899 |
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| Present Installation: Sep 13 1988 |
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| NOAA Chart #: 18450 |
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| Time Meridian: 120 W |
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Data Types Available:Primary Water Level
Backup Water Level
Wind
Air Temperature
Water Temperature
Barometric Pressure
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Station and Bench Mark Drawing
Click HERE for Drawing
(Not for navigational use)
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Station Location Chartlet
Click HERE for Map
(Not for navigational use)
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EPOCH Update Information:
| EPOCH Datum Comparison: |
Click HERE - |
check datum differences between the old epoch (1960-1978) and the new epoch (1983-2001) |
| Superceded Bench Mark Data Sheet: |
Click HERE - |
bench mark sheet on the old Tidal Datum Epoch (1960-1978) |
| Superceded Datums: |
Click HERE - |
datums on the old Tidal Datum Epoch (1960-1978) |
| Mean Sea Level Differences List: |
Click HERE - |
mean sea level differences between the two epochs for all stations. |
Mean Sea Level Difference:
for 9447130 Seattle, Puget Sound, WA, WA |
| 1983-2001 | 1960-1978 | Difference: | | 14.58 ft. | 14.40 ft. | 0.18 ft. |
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Location:
To reach the tidal bench marks from the Seattle Post Office at Third and Union Streets, proceed west on Union Street for one block, then right (south) on Second Avenue for three blocks, then right (west) on Madison Street for three blocks, then left (south) on Alaskan Way to just before the second traffic light (at the intersection of Columbia Street and Alaskan Way), then turn right (west) into the ferry terminal parking lot. The tidal bench marks are near the ferry terminal. The tide guage is located in the ferry terminal building in a storage room adjacent to and north of the Bremerton Ferry loading ramp.
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