Nice short backpack down to some awesome hot springs.
Leaving from the new boondoggle White Rock Canyon parking lot, the (traditional) hike is in the gravel canyon bottom that starts out in an uninteresting wide-open wash but soon enters into some pretty interesting slots. Upon reaching the Colorado River (lake) after about 3 miles, climb up/over/and around to the south about 1/4 mile to Hot Springs canyon and then upstream to the hot springs. The upper (hotter) spring registered 107f. With about a 70% moon, the nightsoaking was heavenly.
There is also the less traditional route that takes you down a couple of sporty (for a backpacker) climb-arounds directly down the hot springs canyon to the hot springs. The trails diverge about 1/2 mile from the highway trailhead, with the traditional one bearing right (north northwest) staying in the initial main wash and the more direct route heading off south southwest into a wash just south of the 'main' one. Expect no signs or other directions - take a spirit of discovery, you will neither need nor want a gps.
Here is a link to a map > http://hikearizona.com/photo.php?ZIP=230322

Note: There is also a great side-hike to Liberty Bell arch that heads off to the north- west-ish from the 'traditional' route. The arch is about a mile or mile-and-a-half each way from the traditional route. This hike also will take you past an abandoned magnesium mine - it is quite interesting as well. Link here> http://hikearizona.com/decoder.php?ZTN=13239