Water update 17th August 2022

Despite often cloudy and humid conditions since the excellent monsoonal rains of 30th July-1st August, with thunder rumbling some afternoons (and regular flash flood warnings being issued), we have not had significant further rainfall in the high country since 8th August, and not since 1st August in Idyllwild. Some effects of the earlier storms persist, with the trails still largely free of dust, but the impact on most water sources from these storms was minimal and the water situation continues to decline as described below. Sadly forecasts indicate that further monsoon activity this month is either unlikely or will be very limited.

Water conditions where known are detailed at the foot of this Report. Hikes have included thorough surveys of water resources on the major trail systems on both the western and eastern slopes of the San Jacinto high country at least weekly, most recently on Monday 15th August, and around the Tahquitz area meadows, Willow Creek Trail and Round Valley. Current conditions for individual trails are discussed in detail below where known.

Hikers should be prepared for continuing hot and humid weather, with overnight “low” temperatures forecast to remain about 10-15°F above seasonal into late August, and daytime highs typically at or above seasonal averages. Humidity is largely above normal at all elevations. Plan accordingly regarding route choice, start times, clothing, sun protection, and water requirements.

Hikers should continue to be prepared for the possibility of rapidly changing weather conditions in the high country in summer. Monsoon thunderstorms, typically in the afternoon, remain a possibility almost daily into late August (although precipitation probabilities have generally lowered for the next week or two). Thunderstorms with lightning, brief but intense precipitation, and rapid temperature drops, can occur in the high country even when such storms are not forecast for lower elevations.

Full fire restrictions were introduced on Thursday 26th May on Forest Service lands, as described in detail here. Campfires on all USFS lands in the San Jacinto mountains (including in fire rings at campgrounds and yellow post sites), and smoking, are prohibited for the remainder of the year.

Be rattlesnake aware. Southern Pacific Rattlesnakes (Crotalus helleri) have been seen on the trail system up to at least 8900 ft elevation. The lower two-thirds of Devil’s Slide Trail, near Strawberry Cienega, and around Tahquitz Peak are regular hotspots, but rattlesnakes are possible anywhere up to at least 9300 ft.

Be bear aware. Although rarely reported, up to three Black Bears have been in the San Jacinto mountains since 2017. On Devil’s Slide Trail at first light on 18th July 2022 we were very fortunate to see the same large (>250lb) dark brown individual that I had seen in September 2021 (one short, poor quality video from the earlier observation is available here). This was clearly a different individual, based on colour pattern and size, from the “blond” one I saw on Devil’s Slide Trail in August 2020 and had previously filmed at home in Idyllwild in 2018 (available here).

Seasonal campgrounds and Forest Service roads are now generally open. Note however the fire restrictions mentioned above. Dark Canyon Campground will not reopen this year due to staffing/maintenance issues. May Valley Road remains closed to vehicles due to “hazard trees” but the necessary tree work is expected to be completed in August.


Temperatures are forecast to be at or largely above seasonal for the remainder of August. Overnight low temperatures will continue to average 5-15°F above seasonal at mid elevations (5000-7500 ft). Higher than normal humidity can make it feel hotter, especially later in the day. Monsoonal storms remain a possibility every afternoon for at least the next ten days, although probabilities for significant precipitation are declining.

At San Jacinto Peak (10,810ft/3295m) on Monday 15th August 2022 at 0800 the air temperature was 60.8°F (16°C), with a “windchill” temperature of 58.8°F (14°C), 45% relative humidity, and a very light NNE breeze sustained at 1 mph gusting to 3.9 mph.


The trail system throughout the San Jacinto mountains cleared of snow in late April.

Willow Creek Trail is a slow, messy hike in places, and is currently only recommended for experienced hikers. Some 46 trees are down on the Forest Service section of this trail between Skunk Cabbage Junction and the State Park boundary (August 2022 survey). Of those, 35 are in the 0.6 mile section between Willow Creek crossing and the State Park boundary. This situation has been reported in person to USFS. The State Park cut about a dozen trees on the section of trail under their jurisdiction in late July (photo below). The huge amount of work that Bill Rhoads and I undertook to clear whitethorn along this trail in 2020 was not completely in vain and parts of the trail would have largely disappeared otherwise, but it has grown back rapidly and makes some of the treefall hazards more complicated to negotiate (photo below).

Due to greatly reduced maintenance work by the agencies and PCTA during the coronavirus pandemic, many trails have accumulated treefall hazards since late 2019, passable with care by hikers but not for stock. Although some treefall hazards from Red Tahquitz to Antsell Rock (PCT Miles 172.5-175) were cleared in June 2021 prior to the rockslide removal work, the situation has badly deteriorated. In my most recent survey I counted about 80 treefall hazards between PCT Miles 170-175, plus about six more on PCT Miles 175-177. At least a third of the former are major hazards that require scrambling over or around.

On 9th August a California Conservation Corps team cut the four treefall hazards on Deer Springs Trail between Strawberry Junction and the top of Marion Mountain Trail, including the huge one of three that came down in late 2021 just south of the latter junction (photo below).

One new major treefall hazard came down on Marion Mountain Trail, about two miles up, in July. Otherwise this trail is in generally excellent condition.

The middle section of South Ridge Trail (between May Valley Road and the top of South Ridge Road) has several trees down which are significant obstructions.

Spitler Peak Trail is currently in its most hiker-friendly condition since the July 2013 Mountain Fire. Forty downed trees, most from an ice storm in late December 2021, plus dozens of additional trunks and branches in the trail, were removed by the Trail Report from this trail in early 2022.

Fuller Ridge Trail has 14 treefall hazards (multiple 2022 surveys) obstructing the trail, but all are readily passable by relatively agile hikers. Eleven of these are in the 1.5 mile section closest to Fuller Ridge Campground (approx. PCT Miles 189-190.5).

The Caramba Trail from near Reeds Meadow through Laws Camp and on to Caramba, and the Cedar Trail from Willow Creek Trail to Laws, are optimistically described by the Forest Service as “not maintained”. In reality both trails no longer exist and are so heavily overgrown I strongly advise hikers do not attempt to follow them. An informal use trail to Laws is much more direct and avoids all of the very challenging bushwhacking of the unmaintained trails (some local hikers dubbed it the “King Trail” when I established the route in 2019). It leaves the Willow Creek Trail exactly 1.0 mile from Saddle Junction (0.46 mile from the Skunk Cabbage turning), descending largely on established deer trails for 1.2 miles, meeting Willow Creek just upstream from the old Laws Camp. From Laws east to Caramba the route of the original Caramba Trail has been well-cairned by myself and others and can largely be followed with very careful route-finding. My 2022 survey counted 97 trees down on this 2.1 miles of trail. It is especially obscure 0.1-0.3 mile east of the Willow Creek crossing, becoming more obvious near Caramba. Very cautious navigation is advised throughout the area.

Seven Pines Trail has had limited hiker traffic since November 2018, largely because Dark Canyon Road was closed almost continuously from February 2019 to July 2022 (with a brief reopening October-December 2021). Dark Canyon Road finally reopened in mid July 2022. The Trail Report has “adopted” Seven Pines Trail as a priority for maintenance work as the trail has had a disproportionate number of lost hiker rescues in the past decade. Between November 2021 and May 2022, 61 downed trees were removed and almost the entire trail thoroughly trimmed and cleared. Despite this very considerable effort, Seven Pines remains a genuine wilderness trail and is nothing like the relatively wide, bare, and obvious routes of, for example, Devil’s Slide or Marion Mountain trails. Cautious navigation remains required for those who do not have significant experience of hiking this trail.

Major treefall hazard removed last week by a California Conservation Corps team from Deer Springs Trail (at about PCT Mile 184.5), photographed 15th August 2022.


The Round Valley pipe is flowing at roughly 1.0 L/min but recent history suggests it may not persist all summer without further rainfall input. The nearby Round Valley creek dried up in May. The small creek in Tamarack Valley also dried up in May.

Both the northern and southern springs at Wellman’s Cienega are flowing extremely weakly for the time of year. They did not receive significant additional input from recent thunderstorms, and the well-known north springs may dry completely in the next couple of months without further precipitation. They should no longer be relied upon for filtering. This spring dried for the first time in recorded history in October 2015, then again in September 2016.

The Wellman’s Cienega springs are the sources for Willow Creek, which is currently flowing weakly but reliably where it crosses the Willow Creek Trail (photo below).

Tahquitz Creek is flowing gently at the northern (lower) end of Little Tahquitz Valley at a flow rate of >2.0L/min (photo below). It is flowing weakly further upstream at its source, known colloquially as Grethe Spring, where it crosses the PCT at approx. PCT Mile 177 (photo below). It is clear that this area received some fresh monsoonal rain input in late July, but this dissipated within hours. Between these locations Tahquitz Creek is largely dry (but presumably flowing subsurface). The small creek in Tahquitz Valley dried up in May.

Skunk Cabbage (“Candy’s”) Creek dried up in late June where it crosses under the trail through Skunk Cabbage Meadow.

Willow Creek flowing very weakly, but reliably, where it crosses its eponymous trail, 11th August 2022.


Ephemeral creeks, such as those along Marion Mountain Trail and on Deer Springs Trail, have been dry since May.

The North Fork of the San Jacinto River is flowing relatively weakly where it crosses the Deer Springs Trail (photo below) and again downstream where it crosses the Fuller Ridge Trail on the PCT (approx. PCT Mile 186.2). However the river is completely dry where it crosses Seven Pines Trail and Dark Canyon Road (photos below).

The creek in Little Round Valley (photo below) received moderate new precipitation from thunderstorms at the end of July. Having been nearly dry in mid June, the creek just about continues to flow through the lower half of the valley (roughly 400 ft), forming some minor pools in the lower half. However the flow has dropped substantially in August, and may not last the autumn without further rainfall. The same creek continues to flow gently where it crosses Fuller Ridge Trail (at about PCT Mile 186.4).

Shooting Star Spring (below Little Round Valley but above the North Fork of the San Jacinto River crossing) is now flowing very weakly and is inadequate for filtering.

The Deer Springs stream crossing at the PCT/Deer Springs Trail (approx. PCT mile 185.6) completely dried up in late May where it crosses the trail and did not receive any meaningful water from rains in July.

The tiny Switchback Spring at PCT Mile 183.5 (about 0.4 miles on the PCT northbound from Strawberry Junction) is flowing gently, and there is just about adequate depth from which to filter water in the tiny pool on the upslope side of the trail (photo below).

The little creek at Strawberry Cienega (PCT mile 183.0) has been dry since June.

On Devil’s Slide Trail, Middle Spring is barely trickling and will dry soon without substantial monsoon rain input. A tiny pool remains as a useful emergency drinking source for dogs. Other springs on this trail have been dry for months.

On the Ernie Maxwell Trail, the crossing of Chinquapin Creek just below Humber Park is dry where it crosses the trail. However, even when Fern Valley Water District is diverting flow into the pipe system small fresh pools remain among the rocks just upslope from the trail (these are an important source of water for the many dogs walked on the Ernie Maxwell).


Live Oak Spring (N 33 37 21, W 116 33 24) Flowing. The most reliable water source on the Desert Divide.

Cedar Spring (N 33 40 36, W 116 34 35) Flowing (well upslope from the trail into the campsite). Likely received substantial fresh input from storms in late July. Sadly the inflow pipe to the trough – formerly the most accessible water source – was vandalized in May 2022 and consequently the trough was dry (but may temporarily fill with rainfall). This damage has been reported to the Forest Service, but no repair is expected before the autumn.

Apache Spring (N 33 43 11, W 116 37 13) Flowing weakly, but the spring box remains full (photo in earlier Report). This spring has functionally dried up in recent years and should not be relied upon by late summer.

Spitler Peak Trail Descending the trail there are five water crossings. The first two, at 0.90 and 0.95 miles down, cross a tiny side creek which is largely dry and should be ignored. The next three crossings, at 1.1-1.5 miles down, are Spitler Creek and is the best source of water (currently flowing steadily at both the uppermost and lowest crossings).

Antsell Rock Creek (N 33 41 52, W 116 39 08) Right by the Spitler Peak Trail trailhead on Apple Canyon Road, Antsell Rock Creek is dry, nearly two months earlier than last year.

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The North Fork of the San Jacinto River is completely dry where it crosses Seven Pines Trail (above) and about a mile further downstream where it crosses Dark Canyon Road near the campground (below), 17th August 2022.
The treefall hazards on Willow Creek Trail are challenging. While the few that were on the State Park section, including a notably huge and slippery one (above) have now been cut, at least 45 remain on the Forest Service section of trail. Many are large, and where they combine with overgrown whitethorn the trail has briefly disappeared (below). Photos 11th August 2022.
Switchback Spring, about 0.4 mile north of Strawberry Junction on Deer Springs Trail, 15th August 2022. Although small, it is a remarkably reliable water source. To facilitate filtering I clear out debris from the tiny pool on the upslope side whenever I hike past.
The largest of the pools in the lower section of Little Round Valley creek. Without new rainfall input the water level is dropping rapidly, as seen when comparing the same view from 15th August 2022 (above) and one week earlier on 8th August (below).
The North Fork of the San Jacinto River where it crosses Deer Springs Trail at about 9400 ft elevation, 15th August 2022. The already low flow rate here has declined markedly in the past week, as this catchment did not receive significant new input from recent rains.

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