| HUC | Name | EOO.ZIP | SHP.ZIP | E00.TAR | SHP.TAR | INFO ON HUC | LLID HTML |
| 18010201 | Williamson. Oregon. (1430 sq. mi.) |
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| 18010202 | Sprague. Oregon. (1600 sq. mi.) |
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| 18010203 | Upper Klamath Lake. Oregon. (738 sq. mi.) |
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| 18010204 | Lost. California, Oregon. (2960 sq. mi.) |
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| 18010205 | Butte. California, Oregon. (601 sq. mi.) |
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| 18010206 | Upper Klamath. California, Oregon. (1400 sq. mi.) |
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