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This dataset depicts staffed visitor stations within the Pacific Southwest Region of the U.S. Fish and Wildlife Service. Staffed visitor stations may be refuge offices that are open to the public during specified hours, or may be dedicated visitor centers. This dataset does not include kiosks or other areas which contain information for visitors but are not staffed. The locations of these stations are based on the USFWS Corporate Master Table, with additional editing and updates based on the input of field and visitor services staff.
The current fire return interval is calculated by dividing the number of years in the fire record by the number of fires occurring during that time period, then adding a value of one (CurrentFRI = Number of years/Number of fires+1). This dataset is current to 2012. Although fires prior to 1908 are recorded in the fire perimeter database, they are not included in this analysis due to lack of consistency in reporting (1908 is the year that the US Forest Service began to formally record information on size and location of major fires).CurrentFRI is derived by overlaying the fire perimeters on the PFR polygons and summing the number of fires affecting each polygon after 1908.

    map background search result map search result map Fire return interval in CA, 1908-2012 Staffed Visitor Stations - USFWS, Pacific Southwest Region Staffed Visitor Stations - USFWS, Pacific Southwest Region Fire return interval in CA, 1908-2012