$ DIRECTIONAL WAVE GAGE 



H PRESSURE GAGE , 



© ELECTROMAGNETIC CURRENT METER / 



Figure 14. Prototype gauge locations at St. Paul Harbor 



1.3 m (4.25 ft) long. The compact size permitted the gauges to be deployed in 

 small trawler-resistant pods. These pods were anchored to the sea bottom. More 

 information on DWGs may be obtained from Howell (1993). Incident wave data as 

 well as tide data were to be obtained from these gauges for 30 min every hour (on 

 the hour). Wave data obtained from the DWGs were to be used as incident wave 

 conditions in which correlations of wave heights and current magnitudes inside the 

 harbor, wave runup, and wave overtopping could be made. They would begin 

 collecting data on 15 October 1994 and extend through the winter season (through 

 April 1995). 



Sea Data 635-12 wave, tide, and current recorders were installed inside the 

 harbor to obtain nondirectional wave data at the north dock and current data in the 

 harbor. A Paroscientific quartz pressure sensor was installed to obtain wave data, 

 and a Marsh-McBimey electromagnetic flow sensor was installed to collect current 

 data. The nondirectional wave gauge was attached to a piling along the northern- 

 most dock, and the current meter was mounted to a raihoad wheel and placed in the 



Chapter 2 Monitoring Program 



19 



