US golf course locations (every leisure=golf_course in OSM, reduced to one point each) and Colorado boundaries, greens, tees, fairways, bunkers, water hazards: © OpenStreetMap contributors, available under the Open Database License (ODbL). Snapshot 2026-10-24. openstreetmap.org/copyright
Imagery & terrain: Esri World Imagery (Esri, Maxar, Earthstar Geographics, USDA, USGS, GIS User Community); Esri World Elevation 3D / Terrain3D; Esri World Transportation reference. USGS: The National Map, USGS Imagery Only and USGS Topo (public domain).
Weather: National Weather Service API (api.weather.gov): forecast and active alerts for the map center (lower 48, Alaska, Hawaii and Puerto Rico).
Colorado regions are built from Colorado counties (OSM boundaries), grouped by U.S. OMB metropolitan areas.
Golf trip deals: not live yet. No hotel, package or travel pins are shown until a real affiliate feed is connected.
Built with ArcGIS Maps SDK for JavaScript 4.34 & Calcite. No API keys. Fees, ratings and seasons are not shown until verified.