Arroyo Seco Creek is located between Altadena and La Canada just beyond the JPL complex. Map here
. Headed up there this afternoon to check it out for the first time and was pleasantly surprised by the ridiculous abundance of trout.
There are many hikers, mountain bikers, and dog walkers, but it seemed like there was no other fishermen; maybe the minimum 2 mile hike equals lack of fishing pressure which equals accumulated DFG plants.
Once getting in the canyon, the river is fenced off by Pasadena for water reclamation reasons (right before the fencing begins, there is a little dam with a handful of wild rainbows...I c/r'd 4). When the fencing ends, you are pretty much at Teddy's Outpost, and it was just below here that I quickly caught 4 and then kept tossing a mini jig and releasing. I walked a bit more up to Gould's Mesa thinking there couldn't be more fish than where I just was, but I was wrong. Certain pools are just loaded with fish, more than willing to bite any color mini jig you wanna throw. I chatted with a few hikers who told me that there are some "huge" "native" fish back at the waterfall at "Paul's", but I will save that for another day (those descriptions are pretty damn relative!) I finally kept my fifth fish, and headed home, content in knowing I have found an upgrade to the San Gabriel River only 15 miles from home.
If you're a stream trout fisherman, this is a GREAT spot to hit up. It's scheduled for a stock this week, but honestly, there are more than enough fish already!