Know where the water is.
Before you're out of it.
Community-verified water sources, real-time field reports, and regional conditions research — for famous thru-hikes and the many lesser-known, well-traveled trails where data otherwise goes stale.
Browse trails
Pick a route to see its water-source report strip, mile by mile.
Continental Divide Trail
The Continental Divide Trail (CDT) spans ~3,100 miles from the Mexico border in New Mexico to the Canada border in Montana, following the spine of the Rocky Mountains through New Mexico, Colorado, Wyoming, and Montana/Idaho.
Pacific Crest Trail
2,650 miles from the Mexican border to Canada through the Sierra and Cascades. The desert sections of Southern California make water planning critical, with long dry carries between sources.
Appalachian Trail
The granddaddy of long trails — 2,190 miles from Springer Mountain to Mount Katahdin through 14 states. Water is generally plentiful, but springs run low in dry stretches and ridges.
Colorado Trail
486 miles from Denver to Durango through the Rocky Mountains. High-altitude creeks and springs are common, but several ridges require careful water planning between drainages.
We're actively building WaterSource. New trails are added regularly and we're always improving ways for hikers to share real-time water data. or report conditions from your next hike to help the community.