Hello everyone! This is a friendly reminder that any of these fun places we may visit, we are a guest at. Please treat both businesses and trails with the utmost respect. We here at Hidden San Diego follow the 'Leave no Trace' mantra, meaning whatever you bring with you comes back with you. If you see trash on a trail, please do your part to help remove it. Remember, we are not picking up trash from another person but instead cleaning up for Mother Nature. Happy adventures!

historic flume trail

13955  El Monte Rd

Lakeside, CA 92040

32.866522, -116.895177

Hike: 1.5 miles    Level: Moderately easy

Dog-Friendly: Yes    Kid-Friendly: Yes


About the Historic Flume Trail

The Historic Flume Trail is actually a small part of a 37 mile system that was built in the late 1800’s to transport water from Lake Cuyamaca to the El Cajon Valley. We’ve covered another section of the flume on this page. You can read the entire backstory of how the flume came to be on that page.

While you’re in the area, visit the Abandoned Pump House nearby!

We did this hike in winter when the weather was mild and the hillsides were lush and green.  The views of El Monte Preserve and mountainscapes was breath-taking.  It was so much fun finding the little tunnels!  They looked like troll homes to me.

The hike begins with multiple switchbacks up the hillside making it a gradual climb instead of a straight shoot up. While we were up here we hiked to Lake Jennings as well and scoped out the lake a bit.


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A glimpse of the flume:

The trail begins with a lot of switchbacks as you climb the hill.  Eventually it flattens out:

historic flume trail

This is a shot peeking into the tunnel.  You cannot actually get inside them:historic flume trail

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That orange stuff on the right is called Witch’s Hair and is a parasite:

Check out those views!

View of the flume from ground level:

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1 Review

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1 Review


  • Anonymous
    Rating Overall Rating Difficulty Finding

    The flume used to end at the pond behind Anthony’s restaurant on grossmont summit. from there, water went in a ditch to Lake Murray. If you look at old maps, it went along what is now dallas street to Lake murray.

    April 18, 2020

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