Form Approved
REPORT DOCUMENTATION PAGE
OMB No. 0704-0188
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VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188), Washington, DC 20503.
1. AGENCY USE ONLY (Leave blank)
2. REPORT DATE
3. REPORT TYPE AND DATES COVERED
June 1999
4. TITLE AND SUBTITLE
5. FUNDING NUMBERS
Painted Rock Reservoir:
1993 Water Surface Area and Storage Capacity Estimate
Derived from Landsat Data Classification
6. AUTHORS
Emily S. Bryant, Timothy Pangburn, Robert L. Bolus,
Gregory A. Pedrick, Gregory Peacock, Brian G. Tracy, and Joseph B. Evelyn
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
8. PERFORMING ORGANIZATION
REPORT NUMBER
Remote Sensing/GIS Center
U.S. Army Cold Regions Research and Engineering Laboratory
72 Lyme Road
Special Report 99-6
Hanover, New Hampshire 03755-1290
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSORING/MONITORING
U.S. Army Engineer District, Los Angeles
AGENCY REPORT NUMBER
Los Angeles, California 90053-2325
Office of the Chief of Engineers
Washington, D.C. 20314-1000
For conversion of SI units to non-SI units of measurement consult Standard Practice for Use of the
11. SUPPLEMENTARY NOTES
International System of Units (SI), ASTM Standard E380-93, published by the American Society for Testing and Materials, 100 Barr
Harbor Drive, West Conshohocken, Pa. 19428-2959.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
12b. DISTRIBUTION CODE
Approved for public release; distribution is unlimited.
Available from NTIS, Springfield, Virginia 22161.
13. ABSTRACT (Maximum 200 words)
The Painted Rock Reservoir, southwest of Phoenix, Arizona, had a storage capacity of about 2.5 million acre-ft
in 1959, when dam closure was made. It was projected that the reservoir would lose about 200,000 acre-ft of its
capacity to sedimentation over 50 years. When the flood of record occurred in 1993, however, it was feared that as
much as 500,000 acre-ft of capacity had been lost, and an updated capacity estimate was needed. Because a pro-
posed conventional reservoir survey turned out to be prohibitively expensive, it was decided to investigate the
use of Landsat Thematic Mapper remotely sensed data, acquired at multiple reservoir levels, to obtain an updated
capacity estimate at a more reasonable cost.
Nineteen Landsat Thematic Mapper scenes from 1993 and 1995 were obtained, including reservoir elevations
ranging from empty to 5 ft above spillway elevation. Water surface area was determined for each Landsat scene
using computer classification of the digital imagery. These surface area values, together with reservoir elevation
records for the time of the Landsat data acquisitions and 1985 survey information, were used to generate an
updated elevation vs. surface area curve for the reservoir, which in turn was used to compute an updated eleva-
tion vs. storage capacity curve. Investigation results indicate that the Painted Rock Reservoir lost approximately
157,000 acre-ft of storage capacity to sedimentation between 1953 and 1993, significantly less than the 500,000 acre-
ft previously feared lost.
14. SUBJECT TERMS
15. NUMBER OF PAGES
52
Reservoir
Landsat
Storage capacity
Painted Rock Reservoir
16. PRICE CODE
Remote sensing
17. SECURITY CLASSIFICATION
18. SECURITY CLASSIFICATION
19. SECURITY CLASSIFICATION
20. LIMITATION OF ABSTRACT
OF REPORT
OF THIS PAGE
OF ABSTRACT
UNCLASSIFIED
UNCLASSIFIED
UNCLASSIFIED
UL
Standard Form 298 (Rev. 2-89)
NSN 7540-01-280-5500
Prescribed by ANSI Std. Z39-18
298-102
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