Map Layers
TrueTopo has 90+ map layers organized into groups. Base (free) layers are always available. Fish Pack and Hunt Pack are sold à la carte; other premium groups (access, easements, infrastructure, mineral intel, snow, aviation, marine, discovery) are included in TrueTopo Pro. See Expansion packs & pricing for locks, pricing, and kits.
Base layers (free)
Section titled “Base layers (free)”Mining
Section titled “Mining”Sources: BLM LR2000, Alaska DNR.
Layers: State claims (active, pending, leasehold), federal claims, prospecting sites.
Attributes: Claim type, status, holder, geometry. Used for prospecting and land-use intelligence.
Land ownership
Section titled “Land ownership”Sources: BLM, state land, Native corporation land, private land.
Layers: ANCSA conveyed/selected, Native allotments, federal/state/private, withdrawals.
Attributes: Ownership type, name, designation. Used to show who owns what and where public access applies.
Reference
Section titled “Reference”Layers: PLSS, recording districts, GNIS, Natural Earth.
Use: Boundaries, place names, coordinate context.
Environment
Section titled “Environment”Layers: NHD hydrography, 3DEP elevation (USGS).
Use: Rivers, lakes, watersheds, terrain elevation. See Data — Datasets.
Expansion & Pro layer groups
Section titled “Expansion & Pro layer groups”Layer groups map to packs in the app. Which products you can buy today is summarized in Expansion packs & pricing — do not assume every group name below is a separate SKU.
Access (Pro; legacy “Access Pack” entitlements)
Section titled “Access (Pro; legacy “Access Pack” entitlements)”Layers: RS2477 trails, 17(b) easements, DOT roads, state roads, park roads, BLM ground transportation.
Sources: DNR, DOT, BLM ArcGIS. See Data — Datasets for ANCSA and RS 2477 details.
Easements (Pro; legacy “Easements Pack” entitlements)
Section titled “Easements (Pro; legacy “Easements Pack” entitlements)”Layers: DNR easements, BLM 17(b), land activity (agreements, federal action, disposals, lease, management).
Infrastructure (Pro; legacy “Infrastructure Pack” entitlements)
Section titled “Infrastructure (Pro; legacy “Infrastructure Pack” entitlements)”Layers: Power lines, pipeline, fiberoptic (1:63,360).
Sources: State DOT, USGS, OSM (where used). Normalized for display and routing context.
Fish Pack (à la carte or included in Pro)
Section titled “Fish Pack (à la carte or included in Pro)”Layers: ADF&G fish counts (sonar), USGS stream gauges.
Use: Real-time river levels and salmon run timing for fishing and field planning.
Hunt Pack (à la carte or included in Pro)
Section titled “Hunt Pack (à la carte or included in Pro)”Layers: GMU boundaries and Alaska hunting-related map context.
Use: Hunt planning alongside land ownership and access layers.
Mineral Intel (Pro; legacy “Mineral Intel Pack” entitlements)
Section titled “Mineral Intel (Pro; legacy “Mineral Intel Pack” entitlements)”Layers: USGS MRDS, Alaska ARDF, geochemistry, geophysics, mineral belts, bedrock geology, faults.
Sources: DGGS, USGS WFS, ArcGIS. Core exploration intelligence stack.
Pro-only layers
Section titled “Pro-only layers”Snow Intelligence (Pro; beta)
Section titled “Snow Intelligence (Pro; beta)”Layers: Resort trails, parking, snow-related overlays where enabled — see app for current coverage.
Note: Group may evolve; checkout and Expansion packs & pricing describe access.
Aviation
Section titled “Aviation”Layers: Airstrips, runways, OSM aerodromes.
Sources: FAA, OSM, state aviation data.
Marine
Section titled “Marine”Layers: Coastal and marine boundaries, ports, facilities.
Discovery
Section titled “Discovery”Layers: LiDAR, satellite imagery (Sentinel-2, Landsat).
Sources: Microsoft Planetary Computer STAC, DGGS.
Terrain
Section titled “Terrain”Sources: USGS DEM, 3DEP, OpenTopoData.
Products: Elevation, slope, hillshade, aspect. Served as raster or derived vector. Slope analysis at point requires Pro.