The park sits on more than 10,000 acres near the scenic New River Gorge and features activities ranging from zip lines, kayaking and mountain bike courses to archery and shooting ranges.
Opening ceremonies for the jamboree are set for Tuesday.
The SYNEVA report says every dollar spent at the site caused an increase of $1.54 in local economic output.
It estimates the project already has generated $45.1 million in tax revenues in the four-year construction period, $29.3 million of that for the federal government and some $15.8 million for state and local governments.
Tomblin says Summit Bechtel is another way for West Virginia to show the world what it has to offer. Scouting and corporate leaders from around the world will be coming to the state for the first time this week, he said.
"Hopefully, the word of mouth resonates and they go home and say, `Wow, we didn't think of West Virginia' as a place to go,'' he said.
The Boy Scouts of America has committed to using the site year-round and making it available for things like corporate retreats and team-building adventures.
"It's not just seasonal,'' Tomblin said, "and it's not just for the Scouts.''