Where to swim in Aurora- Pool or Open Water

Here are some links that might help.

Denver's Central Park Rec Center is just NW of Aurora. It's a nice pool, although there are only 4 lap lanes max and they're pretty narrow.  Their schedule is: http://www.denvergov.org/Portals/747/documents/Recreation/Swimming%20Pools/Indoor%20Pools/SummerCalendar_IndoorPool_CentralPark_2014.pdf

I often go to Hiawatha Davis Rec Center (about 2 miles due west of Central Park RC), which is much less crowded and also has a cheaper day pass.  Here's their schedule:  http://www.denvergov.org/Portals/747/documents/Recreation/Swimming%20Pools/Indoor%20Pools/SummerCalendar_IndoorPool_HDavis_2014.pdf

Aurora Reservoir, SE of Aurora, has open water lap lanes and is open until 9 p.m. according to their website.  I've never gone swimming there but I do know that (a) it's really clean, and (b) it's fairly chilly (upper 60's/low 70's).  I'm doing a tri there in August that's wetsuit legal.  Here's a link to the website: https://www.auroragov.org/ThingsToDo/Reservoirs/AuroraReservoir/

I've never gone to any Aurora pools, but FWIW, here's the general link for info: https://www.auroragov.org/ThingsToDo/Recreation/PoolsandSwimming/