This is a policy implementation case study. The case is the relocation of the Town of North Bonneville, Washington, by the U.S. Army Corps of engineers. Three questions are addressed in this study. One, did the U.S. Army Corps of Engineers, in relocating the Town, accomplish what was intended to be accomplished? Two, how and why were Federal policies applicable to the relocation of this town changed during the implementation process? Three, what can the North Bonneville experience contribute to existent knowledge, understanding, and appreciation of policy implementation? The principal precepts for policy implementation promoted by this study of the relocation of the Town of North Bonneville, Washington, are as follows: (1) Implementing agencies must recognize and consider what they have to do or may have to do to accomplish what they are intended to accomplish,not merely what they want to do or expect to do. Potential impediments to implementation that are unrecognized and unconsidered may fail to develop, but unless addressed problems cannot be solved. (2) Implementing agencies must expeditiously study and understand the policies that they are assigned to implement. Failure of understanding presents the appearance of ambiquity; indeed, even the clearest policy is effectively ambiquous if it is not understood. (3) Implementing agencies must promptly and plainly explain the policies they are charged with implementing to affected and interested persons or groups. Failure to explain leaves affected and interested persons or groups to form their own expectations of what the policy is, which expectations if erroneous may be difficult to dislodge. (4) Implementing agencies must attend that once a policy is stated and explained all subsequent actions are consistent with the policy as stated and that any action that may appear to constitute a deviation is adequately explained. Otherwise the credibility of the agency and of the policy being implemented by the agency is undermined.