The lake is up about 3/10 foot from last Friday, about 3.6 inches. So your dock is awash right now, expect this once or twice a year. Decking needs to be secured to the dock frame as even higher docks will be impacted by wave action when the lake is high. It has been much higher than this in past years.
You can see the Lakeport out flow data here:
http://www2.des.nh.gov/rti_home/stat...E=Lakeport+Dam
Outflow regulation is a balancing act of Winni levels vs flooding the downstream lakes.