Land boundary: geoBoundaries gbOpen NOR ADM0, release 41af8f1. Sources: OpenStreetMap, Wambacher. License: Open Data Commons Open Database License 1.0 (https://opendatacommons.org/licenses/odbl/1-0/). Source: https://github.com/wmgeolab/geoBoundaries/raw/41af8f1/releaseData/gbOpen/NOR/ADM0/geoBoundaries-NOR-ADM0.geojson
Derived dataset: intersection of land geometry with Kartverket municipality boundaries for Alver, Austrheim, Fedje, Gulen, Masfjorden, Modalen, Osteroy and Vaksdal, lightly simplified for web display. Derived land geometry is available as coverage-land.json under ODbL.
Municipality source: https://api.kartverket.no/kommuneinfo/v1/kommuner/{id}/omrade

branches-land.json extends the derived ODbL land dataset with Kartverket boundaries for Bergen (4601) and Askøy (4627), intersected with the same geoBoundaries land geometry. Nordhordland municipalities are dissolved into a single region.

Sotra/Øygarden: intersection of geoBoundaries land geometry with Kartverket municipality 4626. Source: https://api.kartverket.no/kommuneinfo/v1/kommuner/4626/omrade. Derived data under ODbL.

Os teaser area: Kartverket historical municipality 1243 (Os), 2019, transformed from ETRS89 / UTM 32N to WGS84 and intersected with the geoBoundaries land dataset above. Displayed only when Os is selected; not an operational coverage claim. Source: https://testnedlasting.geonorge.no/geonorge/Basisdata/Kommuner2019/GeoJSON/Basisdata_1243_Os_25832_Kommuner2019_GeoJSON.zip . Derived os-area.json under ODbL.

VRM overview: projection and simplification for the embedded department map. Contact snapshot: 24 Rør network, 6 October 2026. Markers identify areas, not office addresses.