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Popular Trails in Topanga State Park Damaged by Winter Storms

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Mudslide on Fire Road #30 below the Hub in Topanga State Park
Mudslide on Fire Road #30 below the Hub

Several popular trails and fire roads in Topanga State Park have been damaged by the cumulative effects of Winter 2022-2023 rainstorms.

Since December 1, 2022, the Topanga Remote Automated Weather Station (RAWS) has recorded nearly 16 inches of rain. The most rainfall occurred January 9-10, when about 5.4 inches was measured.

On Sunday, January 15, I did an exploratory trail run from the Top of Reseda that took me through some popular areas of the Park. This included Fire Road #30, the Hub, Temescal Peak, Temescal Lookout, Temescal Ridge Fire Road, Eagle Springs Fire Road, Eagle Rock Fire Road, the Garapito Trail, and the Bent Arrow Trail.

There were numerous mudslides on the fire roads. The larger slides were on Fire Road #30 below the Hub and Temescal Ridge Fire Road between the Backbone Trail junction and Temescal Lookout. There was also significant roadbed and shoulder erosion in places. At the time, all were passable on foot.

The trails were a different matter. Unfortunately, much of the repair work done on the Bent Arrow Trail following last year’s rain was damaged or destroyed.

The Garapito Trail was blocked in two places on the upper part of the trail. One problem was from a sluff of soil and brush sliding onto the trail. The other was from the collapse of a section of trail. There were additional sluffs, limbs, and washouts on the trail that were passable at the time.

Update February 5, 2023.  The Bent Arrow Trail is closed. Fire Road #30, Eagle Springs Fire Road, and East Topanga Fire Road to Parker Mesa Overlook had all been cleared. The Musch Trail was eroded in spots but OK. Use of the Garapito Trail has moderated its condition. Some brush had been cleared and paths have evolved through the sections of collapsed trail. Extra care is required in some spots.

Here are a few photos taken along the way.

Other trails and fire roads in Topanga State Park likely had similar impacts. I would expect, like last year, sections of the Santa Ynez Trail lower in the canyon to be washed out.

Related post: Trippet Ranch Loop Plus the Santa Ynez Trail

landscape, los angeles, nature, photography, southern california, weather, weather

Downtown Los Angeles (USC) Already at 94% of Normal Annual Rainfall

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Loss Angeles Basin with storm approaching
Increasing clouds over the Los Angeles Basin

La Ninas are fickle beasts, and particularly in a time of climate change, the existence of La Nina conditions in the equatorial Pacific is no guarantee of a dry rain season in Southern California.

According to preliminary rainfall data, from December 1, 2022, to January 16, 2023, Downtown Los Angeles (USC) recorded 11.01 inches of rain. This was 77% of the normal rainfall for an entire year.

This brings the Rain Year total precipitation for Los Angeles up to 13.38 inches — the sixth wettest for the date going back to 1877 — and 94% of the normal ANNUAL rainfall.

ahmanson ranch, landscape, photography, photography|trail running, running, trails, upper las virgenes canyon open space preserve

Ahmanson Ranch Out and Back Trail Run from the Victory Trailhead to the Las Virgenes Trailhead Via Lasky Mesa

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Runner at Ahmanson Ranch (Upper Las Virgenes Canyon Open Space Preserve)
Runner on “The Beast”

The direct out and back trail run from the Victory Trailhead at Ahmanson Ranch through East Las Virgenes Canyon to the Upper Las Virgenes Canyon Trailhead is about 3 miles each way.

This variation bypasses most of East Las Virgenes Canyon. It climbs up to Lasky Mesa and then descends “The Beast” to East Las Virgenes Canyon about 0.4 mile before it joins the fire road in Upper Las Virgenes Canyon. This fire road can be followed south to the Upper Las Virgenes Canyon Trailhead, the turnaround point.

Depending on the exact route, the trail run totals about 7.5 miles, with about 825 feet of cumulative elevation gain. The Beast is the longest continuous hill and is about 0.8 mile in length.

Here is an interactive, 3D terrain view of my out and back trail run from the Victory Trailhead at Ahmanson Ranch to the Las Virgenes Trailhead via Lasky Mesa. The direct route through East Las Virgenes Canyon is also shown. The map can be zoomed, tilted, rotated, and panned using the navigation control on the right. Track and placename locations are approximate and subject to errors. Poor weather and other conditions may make this route unsuitable for this activity.

When it rains a lot, sections of East Las Virgenes Canyon can get really muddy. This route avoids the worst of the gooey, stick-on-your-shoes mud.

Update January 17, 2023. With the additional rainfall this January the “best” route up to Lasky Mesa is on the dirt road. The single track is wet and muddy in spots.  The lower half of the Beast is eroded and somewhat muddy. I have a pair of shoes that I use in the muck and wet. They haven’t dried out for weeks.

Some related posts: It was So Muddy That…, It Was So Muddy (Again) That…, When It Used to Rain in Southern California

photography, rocky peak, running, simi valley, trail running, trails, trails|smmc open space

Chumash Trail Out and Back to Rocky Peak Road

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A spectacular Spring day on the Chumash Trail in Simi Valley

Originally published June 28, 2008. Updated December 30. 2022.

Without a doubt, the Chumash Trail is one of my favorite short “after work” trail runs. Popular among hikers, mountain bikers, and runners, the Chumash Trail starts on Flanagan Drive in eastern Simi Valley and ascends the convoluted western flank of Rocky Peak Park to Rocky Peak Fire Road. It’s single-track trail all the way, gaining about 1175′ over 2.7 miles.

From a trail runner’s training perspective, it is a nearly ideal short, technical, higher heart rate workout. It has a few tough sections but is generally very runnable. When I’m chugging up the trail, it seems just about the time my heart rate is going to go lactic, the trail will back off or contour. Because I usually run the trail near my aerobic maximum, it’s a great indicator of where I am in my training. Over-training, or any other fitness issue, is usually plainly — and sometimes painfully — evident.

In many ways running down the Chumash Trail is more difficult than running up. It can be very challenging to run down a rocky, technical section of trail with any speed. Running a trail like the Chumash Trail can help develop the skill and strength necessary to do downhills with better technique and more speed.

I don’t think I’ve ever run this trail fresh, but a couple of times a year, when my legs feel good, it’s fun to really push the Chumash Trail up and down. Like most running, there’s a balance — push too hard on the up and there won’t be enough left to push the down.

Here is an interactive, 3D terrain view of the Chumash Trail Out & Back to Rocky Peak Road. The map can be zoomed, tilted, rotated, and panned using the navigation control on the right. Track and placename locations are approximate and subject to errors. Poor weather and other conditions may make this route unsuitable for this activity.

There are several ways to extend the basic out and back. One option is to turn left on Rocky Peak Road and run a mile to “Fossil Point.” Another is to turn right and run 1.6 mile to the Rock Peak overlook.

Some related posts: Chumash Trail Mule Deer, Category Is: Things Found on the Chumash Trail, Chumash Trail Rocks & Snow, Chumash-Las Llajas Loop

birds, nature, nature|wildflowers, photography, southern california, weather, wildflowers, wildflowers

Bigberry Manzanita – A Hummingbird Hotel

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Bigberry Manzanita - A Hummingbird Hotel

From a hummingbird perspective, it was the perfect place to spend a cold night.

The big berry manzanita was situated on the spine of a north-south oriented ridge near Topanga Lookout. In that location, a bird might benefit from the warmth of both the setting and rising sun.

In addition, the bush’s thicket of stiff branches afforded some protection from predators, and the multitude of nectar-rich blossoms would provide a badly needed boost of wake-up energy.

The temperature was warmer now, but it had been near freezing at the Cold Canyon trailhead when I started the Topanga Lookout Ridge loop. It had been cold enough that I had jogged the steeper sections of Calabasas Peak fire road, just to ward off the chill.

Humans are funny that way — a small drop in body temperature can be life-threatening. How in the world can a diminutive hummingbird, whose caloric needs require it to feed almost constantly, survive a long, cold Winter night?

Research reveals that hummingbirds accomplish this feat by reducing their body temperature and metabolic rate. This physiological state — called torpor — dramatically reduces their energy requirements.

This particular manzanita apparently receives a lot of 5-star reviews, and at the time I passed, was occupied by several buzzing birds.

From Sunday’s run of the Topanga Lookout Ridge loop.

Related post: Hummingbird Stories