| Key | Value |
| admin_level | 2 |
| border_type | territorial |
| boundary | administrative |
| boundary_type | nation |
| disputed | yes |
| left:country | United Kingdom |
| left:nation | Northern Ireland |
| maritime | yes |
| note | Supposedly a disputed boundary. Nonetheless, every map divides the loughs and it is an acceptable approximation to yield closed polygons for states |
| right:country | Ireland |
| source | Boundary Commission 1920 & OSNI 1950's |