If you’re just visiting an area, the worldwide Swimmer’s Guide is an excellent resource for locating pools that provide single-swim admission.
However… if you’re looking for a more long-term relationship with a pool, you’ll quickly realize that the Swimmer’s Guide leaves out about half of the pools in Seattle. These additional pools may require a long-term membership or (sigh) 10 years of patience on a waitlist. Seattle’s public pools look likely to survive budget cuts this year, but swim times, locations and capacity are limited.
To help you locate pools of all varieties in Seattle, I put together a map using a free copy of Tableau Public. Caveats:
The size of any dot is roughly equivalent to the size of the pool. I had accurate size information for the public pools (gallons of water), but had to estimate for most other pools using lanes/length/depth. The big empty spot on the map is Beacon Hill.
If you have new/corrected data, I’d be happy to revise my spreadsheet and the map. Just email.
The next thing on my wish-list: Wouldn’t it be great to have a walkscore for pools?
Updated October 23, 2010 with 6 more pools.