The Walla Walla Regultory Division's main office is located in Walla Walla, Washington with three field offices located within the State of Idaho. The Walla Walla Regulatory Division boundaries are the State of Idaho.
| WALLA WALLA DISTRICT OFFICE |
| U.S. Army Corps of Engineers |
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| Walla Walla District Office |
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| Regulatory Division |
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General Line (509) 527-7150 |
| 201 N 3rd Ave. |
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Project Manager (509) 527-7156 |
| Walla Walla, WA 99362-1876 |
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Fax (509) 527-7823 |
| BOISE FIELD OFFICE |
| U.S. Army Corps of Engineers |
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General Line (208) 345-2155 |
| Boise Field Office |
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Project Manager (208) 345-2154 |
| Regulatory Division |
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Project Manager (208) 345-2286 |
| 10095 W Emerald Street |
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ITD Liaison (208) 345-2287 |
| Boise, ID 83704-9754 |
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Fax (208) 527-7823 |
| COEUR d'ALENE FIELD OFFICE |
| U.S. Army Corps of Engineers |
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| Coeur d'Alene Field Office |
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General Line (208) 765-8961 |
| Regulatory Division |
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Project Manager (208) 765-8139 |
| 2065 W Riverstone Dr., Suite 201 |
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Project Manager (208) 765-8971 |
| Coeur d'Alene, ID 83814 |
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Fax (208) 765-8368 |
| IDAHO FALLS FIELD OFFICE |
| U.S. Army Corps of Engineers |
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| Idaho Falls Field Office |
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| Regulatory Division |
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Project Manager (208) 522-1645 |
| 900 N Skyline Rd, Suite A |
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Project Manager (208) 522-1676 |
| Idaho Falls, ID 83402-1718 |
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Fax (208) 522-2994 |