Engineer Mountain, CO — USGS historical 15-minute topo (1898)
by USGS Historical Topo Maps (public domain) · Colorado, US
A free GeoPDF for offline GPS in the Cartahaven app, with free updates. How it works offline
Try it now, no account needed
Open this map in the Cartahaven map app in your browser and see your GPS position on it.
Older edition. This is the 1898 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.

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.
- 1Tap “Get this map”: it’s added to your free account.
- 2Open the Cartahaven app on your phone and sign in.
- 3Tap “Get my maps”. 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
34 named features inside the Engineer Mountain, CO — USGS historical 15-minute topo (1898) sheet, from the USGS Geographic Names Information System. Each one links to every map that shows it.
Peaks and ridges
Lakes, springs and falls
- Aspaas Lake · reservoir
- Boyce Lake · reservoir
- Columbine Lake · reservoir
- Electra Lake · reservoir
- Forebay Lake · reservoir
- Haviland Lake · reservoir
- Hotter Brothers Lake · reservoir
- Ignacio Lake · lake
- Lake of the Pines · reservoir
- Papoose Lake · lake
- Potato Lake · lake
- Rainbow Lake · lake
- Relay Retaining Pond · lake
- Scout Lake · lake
Gaps, arches and other landforms
- Bolam Pass · gap
- Coal Bank Pass · gap
- Hermosa Cliffs · cliff
- Hermosa Park · flat
- Purgatory Flat · flat
- Tin Can Basin · basin
Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.
More maps of San Juan National Forest and Colorado.
Maps nearby
More maps around here ›
Engineer Mountain, CO
USGS topo, 2022

Engineer Mountain, CO
USGS historical 15-minute topo (1900)

Engineer Mountain, CO
USGS historical 15-minute topo (1908)

Columbine District Motor Vehicle Use Map (MVUM)
San Juan National Forest (2026)

Dolores District Motor Vehicle Use Map
San Juan National Forest (2026)

Mountain Division Motor Vehicle Use Map (MVUM)
Grand Mesa, Uncompahgre and Gunnison National Forests (2025)
Version history
Version 1 · Nov 4, 2026 · 8.6 MB