About Ken Harth Waterfall
The Ken Harth Waterfall (or just Ken Harth Falls) was the most noteworthy waterfall on the Ken Harth Waterfall Trail, which was easily accessed through the campus of the College of Marin in Novato, California.
Visiting this waterfall felt weird in that I actually had to enter a college campus, then walk around a pair of baseball fields (bringing me back to my baseball-playing days), and then entering the Indian Valley Preserve on the backside of campus.

The major catch with this waterfall (as well as most of the Marin County “Neighborhood Waterfalls”) draining into the suburbs to the east of the county is its highly seasonal flow.
Timing the Ken Harth Waterfall
My first visit took place in late February 2022, which is a time that you’d typically expect there to be at least some water since that’s in the heart of California’s “wet season”.
However, with Global Warming, we’ve been having a pattern of feast or famine precipitation years, and even in those feast years, the quantity can come in a very short period of time (as opposed to spread out throughout the season).
This was exemplified when we had a series of heavy saturation rains in December and then a dry January and February thereafter for that year (and the Ken Harth Falls was pretty much dry).

On my second visit, which took place in March 2024, it followed a very wet February and early March after a very dry Fall and Winter that lasted through January.
And as you can see from the first photo in this page, we happened to see it in pretty nice flow as a result of getting about a season’s worth of precipitation in a span of a month!
That said, I think only locals or the lucky ones who happened to be visiting shortly after heavy rain would be able to precisely time their visit to see this waterfall flow well.
Accessing the Ken Harth Waterfall
As for accessing the Ken Harth Waterfall Trail, I first had to park by the Ernie Gray Fields on the far western end of the College of Marin Campus (see directions below).

Then, I had to walk roughly a quarter-mile past the two baseball fields and bleachers before entering the Indian Valley Preserve.
Right at the preserve, there was a fork in the trail where I could have followed the Pacheco Pond Fire Road to access the top end of the Ken Harth Waterfall Trail.
However, I kept straight ahead on the wide Indian Valley Trail for another 0.2-mile or so (roughly a little over a half-mile from the Ernie Gray Fields parking lot) before reaching the signed junction with the narrower Waterfall Trail on the left.
From there, I then followed the stream (which my topo map calls Arroyo Avichi Creek) for another 0.3-mile before reaching the rocky bed where the namesake Ken Harth Waterfall was at.

It would have been another 0.7-mile or so to continue hiking along the Waterfall Trail back to the baseball fields to complete the loop hike.
That said, each time I’ve done this hike, I didn’t do the whole loop and merely went back the way I came.
This is because I’m usually pinched for time and don’t neither the leisure time nor the assurance that further exploration would be worth my while.
Therefore, overall, according to my GPS logs, I had gone about 1.6 miles round-trip, and the whole thing took less than an hour.
Authorities
The Ken Harth Waterfall (or Ken Harth Falls) resides in the Indian Valley Preserve near Novato in Marin County, California. It is administered by the Marin County Parks. For information or inquiries about the area as well as current conditions, visit their website.
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