Government data (public domain)
- Mine and prospect sites: USGS Mineral Resources Data System (MRDS), mrdata.usgs.gov
- Topo maps, shaded relief, rivers, imagery and elevation: USGS The National Map, usgs.gov
- Historic topo maps: USGS topoView
- Faults: USGS Quaternary Fault and Fold Database; geologic maps: USGS National Geologic Map Database
- Mining claims and land status: Bureau of Land Management, mlrs.blm.gov
- Soils: USDA NRCS Soil Data Access
- Weather forecast: National Weather Service, weather.gov; radar: NOAA NEXRAD via Iowa Environmental Mesonet
- Property lines: public parcel records from state GIS agencies (for example NC OneMap, Montana State Library); each lot shows its source. Not a survey.
- Historical aerial photos: NC OneMap and Montana State Library
Open data (credit required)
- Map data © OpenStreetMap contributors (ODbL); place search by Nominatim
- OpenTopoMap © OpenTopoMap (CC-BY-SA)
- Geologic map tiles: Macrostrat (CC BY 4.0)
- Soil properties: ISRIC SoilGrids (CC BY 4.0)
- Sentinel-2 cloudless 2016 by EOX IT Services GmbH, contains modified Copernicus Sentinel data (CC BY 4.0)
Rock structure, dredge and sample layers
- Dikes & veins, folds, shear zones, lineaments and caldera rims: geologic map lines from Macrostrat (CC BY 4.0), compiled from state, national and university geologic maps; each line links to its source map
- Strike & dip: Washington DNR Geology 1:100,000 GeMS maps; Utah Geological Survey 7.5-minute maps; Wyoming State Geological Survey bedrock maps; © Geological Survey of NSW seamless geology (CC BY 4.0); Macrostrat map points
- Yellowstone caldera rims: USGS / WSGS Yellowstone Volcano Observatory
- Dredge sites: USGS Mineral Resources Data System (MRDS); dredge tailings: USGS USMIN mine features from historical topographic maps (public domain)
- Washington rock samples: Washington DNR rock geochemistry
Australia and world maps (open data, credit required)
Each map shows its credit in the corner of the map while it is on. All are official open-data services or openly licensed tile sets, used under the licence listed.
- Australia Topo, Australia LiDAR elevation (5 m DEM) and Australia mines & mineral occurrences: © Commonwealth of Australia (Geoscience Australia), CC BY 4.0. Mineral occurrences include data from the state and territory geological surveys.
- Queensland Topo and Queensland Relief: © State of Queensland, Queensland basemap web services, CC BY 4.0
- NSW Topo: © State of New South Wales, NSW Spatial Services, CC BY 4.0
- Tasmania Topo: © State of Tasmania, the LIST, CC BY 3.0 AU
- World Topo (TopPlusOpen): © Bundesamt für Kartographie und Geodäsie (2026), TopPlusOpen, Datenlizenz Deutschland – Namensnennung – 2.0; data sources
- World terrain shading: elevation from Terrain Tiles on AWS by Mapzen/Tilezen; source data and credits (SRTM, Copernicus, USGS, Geoscience Australia, LINZ and others). Shading is drawn in your browser.
- Canada Topo (Toporama) and Canada LiDAR hillshade (HRDEM): Natural Resources Canada; contains information licensed under the Open Government Licence – Canada
- UK LiDAR hillshade: © Environment Agency, Open Government Licence v3
- France Topo and France relief shading: © IGN, Licence Ouverte Etalab 2.0
- Switzerland Topo and swissALTI3D relief: © swisstopo (free geodata)
- Norway Topo: © Kartverket, CC BY 4.0
- Spain Topo (MTN): © Instituto Geográfico Nacional de España, CC BY 4.0
- Austria Terrain: basemap.at, CC BY 4.0
- Japan Topo and hillshade: Geospatial Information Authority of Japan (国土地理院)
- New Zealand Topo and LiDAR hillshade: © Toitū Te Whenua Land Information New Zealand (LINZ), CC BY 4.0
- Finland Topo: © National Land Survey of Finland, CC BY 4.0
- Sweden Topo: Lantmäteriet open data, CC0
Sample and drill hole locations
- Soil, stream-sediment and rock geochemistry sample sites (US): USGS National Geochemical Database, public domain
- Wyoming geochemistry samples: Wyoming State Geological Survey
- Queensland mineral drill holes: © State of Queensland (Geological Survey of Queensland), CC BY 4.0
- Western Australia mineral exploration drill holes (open file): © Western Australia, Department of Mines (DMIRS), CC BY 4.0
- NSW drill holes: © State of New South Wales (Geological Survey of NSW), CC BY 4.0
Licensed services
- Satellite imagery: Esri World Imagery, used under an ArcGIS Location Platform account (Tiles © Esri and its data providers)
- Gold and silver spot prices: gold-api.com
- Payments: Stripe
Photos, video and code
- Sluice box photo (Sluice Box Setup tile): “Goldwaschrinne” by Nienetwiler, Wikimedia Commons, CC BY 2.5 CH, cropped
- Photos and video: Pexels (free to use)
- Map engine: Leaflet (BSD-2-Clause); fonts: Google Fonts (SIL Open Font License)
Ownership
GoldScout™ and the GoldScout logo are trademarks of Jason Delk. App design, text and code © 2026 Jason Delk. Questions: contact us.