SIERRA ANCHA WILDERNESS, ARIZONA
		Photographic Archive 1985 - 1993

SITE HISTORY

The Sierra Ancha Wilderness automatic photographic monitoring system was installed approximately fourteen miles south of the Pleasant Valley Ranger District Office on State Route 288, in February 1985. The system was mounted at the edge of a small cliff 300 to 400 yards east of Route 288 at Board Tree Saddle. The camera viewed Mount Turnbull, 118.5 kilometers to the southeast, until September 1993.

Photographs were taken at 09:00, 12:00, and 15:00 daily from 1985 through 1993. Over 8,000 35mm color slides of the Mount Turnbull vista were reviewed to develop the provided historical photographic archive.

Site-specific historical archive products include:

• Site Specifications - detailed site location map, vista photograph, and site specifications describing the scene monitoring site.
• Spectrum Frequencies - tabular visual range and cumulative frequency summaries for each range of visibility spectrum.
• Image Gallery - select images representative of observed air quality conditions for the summarized scene monitoring site.

Also included is Air Program Information describing visibility measurements, causes of poor visibility, and Web addresses of related air quality data programs.

Site-specific products can be accessed from the blue links above or from the associated selections to the left. All graphic and text files have been archived in HTML format. To save or copy text to your hard drive, highlight the text/graphic of interest and right-click on the highlighted portion. Follow the detailed instruction menu. The site location map is available in both HTML and PDF format. To enlarge or view map details, select the PDF Zoom option at the bottom of the Site Location Map page.