Idaho Code § 36-1002: Enforcement.

For the purposes of enforcing the provisions of section 36-1001, Idaho Code, the courts of this state sitting in the various counties contiguous to said waters, and the officers of this state empowered to enforce laws pertaining to fish or game are hereby given and shall have jurisdiction over the entire boundary waters aforesaid to the furthermost shoreline. Concurrent jurisdiction with the courts and administrative officers of the states of Washington and Oregon over the said boundary waters is hereby expressly recognized and established.