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Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming — USGS Scientific Investigations Map 3399

by USGS Geologic Maps (public domain) · Colorado, Wyoming, US

Free

A free GeoPDF for offline GPS in the Cartahaven app, with free updates. How it works offline

Older edition. This is the 2018 edition from the U.S. Geological Survey. A newer one may have been published since; check the agency's page for current rules and routes before relying on it.

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Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming — USGS Scientific Investigations Map 3399
Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming. USGS Scientific Investigations Map 3399 (2018), the georeferenced PDF of the map sheet: rock units, faults and structure on a topographic base, with your GPS position shown offline. Public domain map from the U.S. Geological Survey, republished unmodified from https://pubs.usgs.gov/publication/sim3399. This store is not affiliated with or endorsed by the USGS.

What you get

  • Your GPS position on the map. A blue dot on this official sheet shows where you are.
  • Works with no signal. Download it once; the map and your GPS position keep working with no cell signal.
  • Tracks, placemarks and photos. Record where you go, drop pins, and export GPX, KML or GeoJSON.
  • Free updates. When a new edition is published here, it’s yours at no cost.
  1. 1Tap “Get this map”: it’s added to your free account.
  2. 2Open the Cartahaven app on your phone and sign in.
  3. 3Tap “My purchases” (“Get my maps” before you sign in). It’s on your phone, ready offline.

The app runs on iPhone, Android and in desktop browsers. Install it · How offline GPS works

Where this map covers

Named places on this map

16 named features inside the Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming — USGS Scientific Investigations Map 3399 sheet, from the USGS Geographic Names Information System. Each one links to every map that shows it.

Lakes, springs and falls

Gaps, arches and other landforms

Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.

More maps of Arapaho and Roosevelt National Forests.

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Version history

  1. Version 1 · Nov 3, 2026 · 59.2 MB