Dan is the MAN!Dan said:Reservations can be made either through
or by calling the Reservation Office at
Denver area: 303-470-1144
Toll free: 800-678-2267
http://parks.state.co.us/images/content/documents/ChatfieldCamp405696.pdf this is a map of the campgrounds at chatfield.
If you got throught the www.reserveamerica.com link you can enter your choices and it will tell you availability for the days that you want.
Hope this helps.