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Surface Area Findings
State of Oregon
National Resources Inventory Results
(Revised December 2000)
See Surface
Area Topic List for detailed results.
 Several
documents on this page require
Adobe Acrobat
Background
The NRI is designed to account for the total
surface area of Oregon, including land and water. However, it does not collect
detailed land use data on federal lands. The inventory is primarily designed
to provide information on the nation’s non-federal lands.
NRI Results for Oregon
In 1997, the total surface area of Oregon was
estimated to be 62,161,000 acres.
| Category |
Acres |
Percent |
| Federal lands |
31,260,400 |
50.3% |
| Non-federal rural lands |
28,858,100 |
46.4% |
| * Developed lands |
1,222,300 |
2.0% |
| ** Permanent water |
820,200 |
1.3% |
- * Urban lands and rural transportation lands
** This does not include Pacific Ocean waters.
Chart
for Surface Area (22 KB)
Table
for Surface Area (8 KB)
One unusual aspect of the Oregon surface area results is a wide variation
in the permanent water estimates, ranging from a high of more than 923,000
acres in 1987 to a low of about 660,000 acres in 1992. These changes were due
primarily to the expansion and contraction of large closed basin lakes in
Harney, Lake, and Malheur counties in southeastern Oregon. Long term wet and
dry cycles dramatically effect the size of these lakes.
To see all results, select Geographic Area.
< Back to Major Findings Topic List
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