In a news article dated Tuesday 10/22/13, the actual cost of the 16 day shut down was tabulated. According to The Washington Times, the actual costs were close to 2.2 billion dollars. While the parks/monuments make up less than 1% of the federal budget, they are seen to be large economic engines for states.

Please feel free to read the following article that talks more in depth.

Government shutdown cost states $2.2B, study reveals
http://communities.washingtontimes.com/n...-study-reveals/