Map data & licences

Every source the RidgeLink map draws from, and the licence it is used under.

RidgeLink does not own this data. It comes from public agencies and open projects, each of which asks to be credited, and several of which require it as a condition of use. If we have credited something incorrectly, or missed a source, tell us at support@ridgelink.app and we will correct it.

Basemap and terrain

OpenFreeMap vector basemap and fonts — © OpenFreeMap
OpenStreetMap contributors, the underlying map data — Open Database Licence (ODbL) · openstreetmap.org/copyright
MapTiler satellite imagery, terrain-RGB elevation tiles and contours — © MapTiler © Esri and imagery contributors
USGS 3DEP elevation and 1 m lidar slope — public domain (US Geological Survey)
LANDFIRE disturbance and vegetation — public domain (USGS/USFS)

Trails — United States

Snowmobile

Wyoming State Trails/USFS · Michigan DNR · New York State Parks · Minnesota DNR · Utah DNR · North Dakota GIS Hub · Colorado Parks & Wildlife (COTREX) · Washington State Parks · Idaho (Valley, Fremont, Bannock counties) · Montana Snowmobile Trails Data · Vermont ANR (VAST) · NH GRANIT/UNH · Wisconsin Office of Outdoor Recreation · PA DCNR & Game Commission · CT DEEP · MA DCR · Mat-Su Borough & Fairbanks CRTP (Alaska) · USFS National Forest System Trails

ATV, side-by-side, dirt bike and multi-use

Colorado Parks & Wildlife (COTREX) · Idaho Parks & Rec · Minnesota DNR · Utah DNR · Wisconsin DNR · NC State Parks · Tennessee State Trails · WV DOT · Missouri Dept of Conservation · Oregon Dept of Forestry · Maine BPL Off-Road Vehicle Program · California State Parks OHMVR · PA DCNR · Arizona TRAZ · New Mexico EMNRD · Michigan DNR · USFS Motor Vehicle Use Map · BLM Ground Transportation Linear Features · BLM National Mountain Bike Routes · USFS Recreation Sites · Natrona County (Wyoming) Parks

Hiking, mountain bike, tracks and directories

Trails — Canada

Québec — Ministère des Ressources naturelles et des Forêts (MRNF), AQréseau+: the FCMQ snowmobile network and the FQCQ quad network — Creative Commons Attribution 4.0 (CC BY 4.0) via Données Québec
Government of Alberta, Crown Land Trails — Open Government Licence – Alberta

Club trail networks in Québec require a trail permit from the federation that grooms them, and many cross private land under agreements between the club and the landowner. These lines are centrelines: they are not grooming status, and they are not permission to ride.

Land ownership and public land

Bureau of Land Management Surface Management Agency and public-land shading — public domain (US Dept of the Interior)
County assessors, via state GIS portals, for parcel boundaries and public-agency records — terms vary by county; used as published
Québec MRNF, Subdivisions territoriales forestières, Territoires récréatifs and Plans d'affectation du territoire public — CC BY 4.0 via Données Québec
Land Information Ontario, patented and unpatented Crown land, provincial parks and conservation reserves — Open Government Licence – Ontario
Province of British Columbia, ParcelMap BC, Indian Reserves and BC Parks — Open Government Licence – British Columbia
Government of Alberta, Green/White Area, parks and protected areas, First Nations reserves and Métis settlements — Open Government Licence – Alberta
Government of Saskatchewan, provincial forest, agricultural Crown land and the protected-areas network — Saskatchewan Standard Unrestricted Use Data Licence v2.0
Government of Manitoba, provincial parks and wildlife lands — Manitoba Open Data Licence
Natural Resources Canada, Canada Lands Survey System: Indigenous lands and national park boundaries — Open Government Licence – Canada
Environment and Climate Change Canada, Canadian Protected and Conserved Areas Database — Open Government Licence – Canada
Canadian Council of Forest Ministers / NRCan, Map of Forest Management in Canada — Open Government Licence – Canada
Nominatim / OpenStreetMap for place and address lookup — ODbL · openstreetmap.org/copyright

Water, weather and snow

USGS National Hydrography Dataset — public domain
Open-Meteo forecasts — CC BY 4.0
NOAA National Weather Service alerts and radar — public domain
NOAA NCEI climate normals — public domain
USDA NRCS Air and Water Database: SNOTEL snow stations across the western United States, and the British Columbia and Alberta snow pillows carried on the same network — public domain (USDA); Canadian stations operated by the BC River Forecast Centre and Alberta Environment

Snow stations are a network of specific sites, not a nationwide grid. There are none in Michigan, Minnesota or Wisconsin, and none east of the Dakotas.