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Features

  • Interactive map — Leaflet-based, pan, zoom, search
  • 120,000+ Alaska place names — Gazetteer search (GNIS and regional sources)
  • Multiple basemaps — Topographic, satellite, terrain, light/dark
  • 90+ map layers — Mining, ownership, access, geology, environment, and more
  • Opportunity Score — Prospectivity, access, and legal status at any point
  • 12-factor prospectivity — MRDS, ARDF, geology, mineral belts, expired claims
  • 7-factor access score — Roads, trails, RS2477, 17(b) easements
  • 7-factor legal check — Land status, claim overlap, Native land
  • Recommendation engine — Stake / Investigate / Monitor / Avoid
  • Mining district context — 15 Alaska districts with commodities and history
  • Expired claim alerts — Tenure opportunity signals
  • Live government APIs — BLM, DNR, USGS, DGGS, ADF&G (client-side fetch)
  • 8 data adapters — BLM, DNR, mineral, access, native-land, DGGS, OSM, satellite
  • 25+ datasets — Active claims, land status, MRDS, ARDF, RS2477, 17(b), fish counts
  • Route import — GPX, KML, GeoJSON
  • Elevation profile — Distance vs. elevation, gain/loss along routes
  • Measurement — (When available) Distance and area
  • Export — KML, GPX, legal descriptions, filing packets
  • Offline mode — Cache layers to IndexedDB, use without network
  • Waypoints — Save and manage waypoints (Pro)
  • Slope analysis — Terrain slope at point (Pro)
  • Premium layer groups — Access, easements, infrastructure, mineral intel, fish, hunt, snow (beta), plus aviation, marine, discovery
  • Panel kits — Miner, Field, Intelligence, Ski & Backcountry (all included)
  • PWA — Install as app, service worker for caching
  • iOS app — Capacitor wrapper (App Store)
  • Status page — status.truetopo.com
  • Watch — watch.truetopo.com data change monitor

  • Map sharing — URL state, saved maps, share links
  • Waypoint and drawing tools — Place markers, draw lines/polygons
  • Measurement — Distance, area, bearing
  • Elevation profiles — (Enhancement) Along drawn routes
  • GPX/KML import/export — Full round-trip support
  • Alaska icon set — Custom symbols for mining, access, wildlife
  • Derived datasets — Claim density, access probability heatmaps
  • Print/export — PDF, image export
  • Historical imagery slider — Compare older vs. current imagery
  • Collaborative editing — Owner/editor/viewer roles
  • Version history — Map and layer change tracking
  • 3D terrain — Terrain extrusion and flyover
  • Field reporting — Submit reports from the field
  • Community discovery — /explore for shared maps and trips
  • Trail network — Routing on trail and road network
  • Auto-routing — Path finding with slope and access constraints
  • AI assistant — Natural language queries and recommendations
  • Nationwide expansion — Oregon, Pacific Northwest, more states
  • events.truetopo.com — Earth events (storms, fires, floods, quakes, landslides)
  • Oregon region — oregon.truetopo.com (planned)

FeatureFreePro
Base layers (mining, ownership, reference)✅✅
Gazetteer search✅✅
Opportunity Score✅✅
Route import + elevation profile✅✅
Offline mode❌✅
Waypoints❌✅
Slope analysis❌✅
Fish / Hunt packs (annual)Purchase separatelyIncluded in Pro
Other premium layer groups (access, easements, infra, mineral intel, snow, etc.)Pro✅
Aviation, Marine, Discovery layers❌✅
Panel kits (Miner, Field, Intel, Skier)Pro or legacy purchaseAll included

TrueTopo aggregates data from:

  • USGS — GNIS, MRDS, ARDF, NHD, 3DEP
  • BLM — Mining claims, LR2000, land status
  • Alaska DNR — Land status, ANCSA, RS2477, easements
  • DGGS — Geology, geochemistry, geophysics, mineral belts
  • ADF&G — Fish counts, sonar data
  • OpenStreetMap — Roads, trails, airstrips
  • Microsoft Planetary Computer — Sentinel-2, Landsat

All data is fetched client-side from public APIs. No TrueTopo server stores or transforms the raw datasets; computation happens in your browser.