4 Waves 



The closest measured wave data to the project site is a National Oceanic and 

 Atmospheric Administration buoy located over 121 km (75 miles) north of 

 Port Huron in the central portion of the lake. Wind-generated hindcast wave data 

 exist from the U.S. Army Engineer Wave Information Study (WIS). WIS Report 

 26 (Reinhard, Driver, and Hubertz 1991 ) provides hindcast wave data for stations 

 along the entire shoreline of Lake Huron. WIS Report 26 is a 32-year hindcast 

 (1956-1987) using wind fields during that time and transformation models to 

 predict wave statistics at a given location. The closest WIS station to Port Huron 

 is WIS Station Number 1 located approximately 8 km (5 miles) northeast of Port 

 Huron. At this site, for the 32-year period of reporting, the calculated mean 

 significant wave height was 0.8 m (2.6 ft) with a peak wave period of 4.0 sec. 

 The most frequent direction band for waves was 202.5 deg (±1 1 .25 deg) or waves 

 propagating in a direction just 22.5 deg east of north. 



An updated hindcast including more recent data was conducted to provide 

 wave data closer to the project site. The summarized wave data that were used for 

 modeling in the physical model and calculating sediment-transport potential are 

 given in Table 2. 



Table 2 



Updated Hindcast Wave Data 



Wave Height m (ft) 



Period, sec 



Direction from, deg 



1.22(4.0) 



6.0 



11 



2.07 (6.8) 



7.9 



11 



1.22(4.0) 



5.0 



59 



1.86(6.1) 



6.0 



59 



Chapter 4 Waves 



21 



