With only a few exceptions, you need one level for each +2 bonus on the enchant. The base enchant of the woods can be found on the wiki or the info section of play.net under materials. It is relatively common to find the lower enchant woods with extra enchants, but they can also be found with only their 'natural' enchant.

Sweet is the sound of the pouring rain,
And the stream that falls from the hill to plain.
Better than rain or rippling brook,
Is a mug of beer inside this Took.

Thank you both for the info

I got fired from the keyboard factory....turns out i was not putting in enough shifts