My epiphany about using topographic maps for finding secluded swimming holes

They reveal water features guidebooks often miss.

3 comments

3 Comments

Topo maps are great for finding water, but they won't tell you if a spot is actually swimmable. Those blue lines can lead to a stagnant pond or a barely-trickling creek just as easily as a perfect swimming hole. You really have to cross-reference with recent satellite imagery to check for water volume and accessibility. Learned that the hard way after a long hike to what the map promised was a "perennial stream" that was completely dry. The contour lines are your best friend for guessing depth, but it's still just an educated guess. Always have a backup plan when navigating by topographic map.

carr.gavin1mo ago

My Colorado hike last year taught me the same lesson about trusting topo lines for water sources. Solidarity with @janapatol on always checking satellite imagery before committing to a route.

gray61mo ago

Oh come on, satellite imagery can be just as misleading with cloud cover or seasonal changes. I've relied on topo lines for years in the Rockies and they've rarely steered me wrong on water sources. Those blue lines are based on surveyed data, not just a snapshot from space. If you know how to read contour lines properly, you don't need to double-check every stream on a satellite.