2018-12-27 still closed due to the fire damage a couple years ago
Fish Canyon fall is a 4 tier fall that flows from mid-winter through spring. The trail follows the creek or goes up along canyon walls. There are remnants of cabins that existed in the canyon for the first half of 20th century and then were destroyed by fire and floods.
Azusa Rock quarry operates in the canyon mouth, so access to the short trail is limited by the days when quarry provides a shuttle. On other days you can use the official Fish Canyon trail (8.5 mi roundtrip, AEG 2800 ft) that goes around quarry and is overgrown because of rare use.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.