North Spit, Humboldt Bay, CA	Station ID: 9418767	
Station Information

Latitude: 40° 46' N	Mean Range: 4.89 ft.		
Longitude: 124° 13.0' W	Diurnal Range: 6.86 ft.	
Established: Aug 16 1977		
Present Installation: Oct 6 1991		
NOAA Chart #: 18622		
Time Meridian: 120 W		

		

		

		

		
	            	
Click for more photos		

Data Types Available:
Primary Water Level
Backup Water Level
Barometric Pressure
Water Temperature
Air Temperature
Wind	Station and Bench Mark Drawing
Click HERE for Drawing
(Not for navigational use) 	Station Location Chartlet
Click HERE for Map
(Not for navigational use) 		

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Superceded Bench Mark Data Sheet:	Click HERE - 	bench mark sheet on the old Tidal Datum Epoch (1960-1978)	
Superceded Datums:	Click HERE - 	datums on the old Tidal Datum Epoch (1960-1978)	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 9418767 North Spit, Humboldt Bay, CA	1983-2001	1960-1978	Difference:	
18.25 ft.	18.14 ft.	0.11 ft.	
		
Location:
To reach the tidal bench marks from the U.S. Highway 101 in North Eureka, take Samoa exit from State Highway 255, and proceed NW on State Highway 255 for 2.9 km (1.8 mi) to a T intersection, then turn south onto the Navy Base road and continue for about 6 km (4 mi) to Humboldt Bay Coast Guard Station. The bench marks are on the Coast Guard Base property. The tide gauge is at the east end of the southern pier of two finger piers directly east of the 3-story Coast Guard station building.