Kootenai County, ID Noise Ordinances: Aircraft Noise (2026)

102). The noise compatibility area is every parcel inside the 2028 sixty-five decibel day-night average sound level (65 DNL) contour mapped in the current airport master plan. 103(D) treats that footprint as hazardous because of noise and endangerment risk to residents, so it layers four restrictions on top of the underlying zone: uses are limited to whatever each specific DNL/Ldn contour permits under 14 CFR Part 150, Appendix A, Table 1; no place of assembly or place of worship may be newly built anywhere in the noise compatibility area; every new subdivision inside the area must record an avigation easement granting the airport the right to generate noise and overflight before final plat; and none of this overrides a use already prohibited by the underlying zone.

103(A) separately bars any use, anywhere in the overlay zone, that would create electrical interference, confuse airport lighting, glare pilots, draw birds into a bird-strike hazard, or otherwise endanger aircraft landing, takeoff, or maneuvering. 103(C)). 105, which requires sign-off from both the airport advisory board and the FAA before the county will even consider it.