There are a ton Charles and depends the nature and size of the incident, for example the current fires in Boulder County are still being managed by local resources and are on local frequencies.
Or once the tanker bases (Jeffco, Pueblo, Durango, Junction etc) are staffed they could add some air resources to a local still county controlled fire based on the request of the IC and that would normally consist of SEAT's.
The next level would get some state (CSFS) resources involved depending if it was burning on state or federal land.
Then the next level would get National Type I, II or III IMT's involved (a type III IMT is currently deployed in the Alamosa area for example) and that would implement another set of national (federal) frequencies.
http://www.radioreference.com/apps/db/?aid=3521
You ask for the top wildland freqs are you referring to air or ground and for what parts of the state?
Jim<