I started on the main road, went North for a mile (just past Pond #3) and then East on Poco Lago (just past Pond #3).
I had no cell signal nor map guidance in this area, but I did spot Pond #4 on Caminito Santo Tomas behind a gate. Luckily a car was coming out, so I was able to enter.
Here's looking West out my right window at pond #4:
Looking East out my left window at pond #5
I had to go to the end of the street to turn around so here’s pond #5 again,
and pond #4.
The easternmost pond #6 is in a horse facility, just EAST of the high-end housing area and annoyingly accessed by an entirely-separate, winding, steep, half-mile Black Mountain Road.
The reeds and no trespassing sign are sure clues there is (or once was) water nearby.
I slide the car to the side of the road and walk a hundred steps or so to get some altitude. I can see the water from here.
There's a path across the "dam" but I didn't walk it because the no trespassing signs are on my side of the dam.
BONUS!
I drove past this very nice pond in the Del Mar country club entrance, along the way to the freeway.