2017 Mosquito Reports

Questions and reports related to Sierra Nevada current and forecast conditions, as well as general precautions and safety information. Trail conditions, fire/smoke reports, mosquito reports, weather and snow conditions, stream crossing information, and more.
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Mammoth High Country 7/1-7/4

Post by happycamper0313 » Fri Jul 07, 2017 9:57 am

Devils Postpile National Monument/JMT - bearable and repellant works in this area

Agnew Meadows - they will eat you alive. Bites are terribly painful and numerous - we each had about 20+ and used Jungle Juice. Lots and lots of sitting water in this area. I would say full mosquito net is the only safe harbor. I got bitten through layers of clothing. And these buggers HURT. What makes some swarms' bite hurt and others unnoticeable? I felt as if I was being stung by bees all over my body!

High Trail/PCT - once you get out of the Agnew meadows area and gain some elevation, you're free. But they are terrible for the first couple miles.

Thousand Island Lakes - none

River trail - bearable by the San Joaquin but hungry and swarming further from the river.

TL;DR: Agnew Meadows is a hellhole.

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Re: 2017 Mosquito Reports

Post by SSSdave » Fri Jul 07, 2017 11:26 am

happycamper0313, others have also claimed they use DEET but still get bit but I have to believe one is not yet locked into to best avoidance techniques starting with clothing. An issue with using DEET while hiking, is if sweating that DEET may soon flow off thus DEET is only part of the solution. Even an old backpacking acquaintance that was an absolute mosquito magnet due to considerable natural body odor managed to prevent getting bit once he learned how. Regardless I still get bit a few times on trips because as a photographer, I often rinse my hands and wrist off in order to not get oil on my camera and lenses.

Maverick's 2012 thread has 4 of my post inputs over the first 3 of 6 pages on how to cope with mosquitoes.

http://www.highsierratopix.com/communit ... ito#p56699

http://www.davidsenesac.com/2017_Trip_C ... les-0.html

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Re: 2017 Mosquito Reports

Post by maverick » Fri Jul 07, 2017 11:58 am

SSSDave wrote:
I often rinse my hands and wrist off in order to not get oil on my camera and lenses.
A pair of really thin gloves takes care of that issue. :unibrow:
Professional Sierra Landscape Photographer

I don't give out specific route information, my belief is that it takes away from the whole adventure spirit of a trip, if you need every inch planned out, you'll have to get that from someone else.

Have a safer backcountry experience by using the HST ReConn Form 2.0, named after Larry Conn, a HST member: http://reconn.org

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Big Pine, North Fork July 5th

Post by deenad » Sat Jul 08, 2017 10:03 pm

Mosquito's are horrible in the North Fork of Big Pine Creek. You cannot stop to catch your breath without getting swarmed by hundreds of the bloodsucking beasts! I envied those with mosquito nets.......
Last edited by deenad on Sun Aug 20, 2017 3:00 pm, edited 2 times in total.

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Long Lake / Parker Lake

Post by rileySB » Sat Jul 08, 2017 11:06 pm

Was just up at Long Lake, must have been too cold for them as there was ice covering part of the lake still, so I would call it a 1.
Did the hike to Parker Lake, skeeters were prominent in the section once out of the exposed beginning section of trail. There were a few areas of boggy meadowlike stuff, I would rate them a 2. Once up at the lake itself, a moderate breeze kept them to a 0. I wore DEET anyways and didn't get bitten more then what I can count on one hand. And temps were in the mid 80s.
Last edited by maverick on Sun Jul 09, 2017 12:13 pm, edited 1 time in total.
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Re: 2017 Mosquito Reports

Post by hkyfsh » Mon Jul 10, 2017 7:21 am

NF Big Pine, Mosquitos at 3 to 4 at both Dawn and Dusk and in the trees, but down to 1 during the heat of the day in open exposed areas.

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Cottonwood Lakes 7/6-7/9

Post by Phiker » Mon Jul 10, 2017 8:09 am

July 6th-9th, mosquitoes were a solid 3 throughout the day.
From 5am to 7 am and from 4pm to 8pm, they were all over the place! DEET up or stay inside your tent!
This is true for Lakes 2 & 3 (even half a mile from the water) and near any creeks. Less at Long lake because of breeze, none at High Lake Saturday.
They were swarming even before sunrise!
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Leavitt Meadows to Lane and Secret Lakes, 7/8-7/9

Post by bthsieh » Mon Jul 10, 2017 10:39 am

0 in Leavitt Meadow except for the few wet areas where it was 1-2. Almost none on most of the hike between the meadow and Roosevelt/Lane Lakes. Even the areas next to standing water were only ~1. We were able to chill in camp (mostly) without bites. I attribute this to the arid and hot conditions as well as to the consistent breeze.

On the hike out, stopped at Secret Lake for lunch and swimming. Our not quite 2 year old daughter loved the cool water. No sign of skeeters.

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Re: 2017 Mosquito Reports

Post by psykokid » Mon Jul 10, 2017 11:11 am

At the far north end of the range the mozzies were a 1 in the Lake Almanor/Chester area near Lassen NP over the 3-5th while we were there. We ventured outside the Sierra after that into the Cascades and visited Crater Lake NP. Mozzies were minimal in the park, but where we camped on the south end of Diamond Lake at a forestry campground the mozzies were a solid 5. Deet and picardin spray didn't even put a dent in them. An hour before and two hours after dusk or dawn was the worst. Wife and kids hung out in the tent to escape them.

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Mosquito Flats - Pioneer Basin 7/10-7/15

Post by Wandering Daisy » Sat Jul 15, 2017 7:57 pm

7/10-7/15. Mosquito Flat TH to Ruby Lake. Mono Pass to Pioneer Basin. Fourth Recess Lake and back up to Trail Lakes. Back over Mono Pass.

Trailhead- 2 mostly early morning and dusk. But hikers said going up Rock Creek was really bad. Trail to Ruby Lake was fine.
Ruby Lake- 1-2, only at dusk and dawn. Breezy which helped.
Pioneer Basin 0-1. Mostly a nice breeze and NO mosquitoes at all!
Fourth Recess Lake. Very swampy. 2 middle of the day. The east slope (off trail) up to Trail Lakes was about 3. The mosquitoes are mostly in the forested areas. I did not camp here because there was a lot of standing water.
Trail Lakes. 1-2. Just pesky dawn and dusk. Very few biting. Mostly little ones just flying around.

What mosquitoes I saw were little baby ones. Not many would even bite. I used a head net when cooking just because I do not like them in my face. Never used any repellent. Had "bugs-off" shirt and pants. Not sure if I even needed that. It froze the first two nights. Warmer the other nights. Plenty of standing water, but I think it is just too cold at night for a big hatch. That may quickly change.
Last edited by maverick on Thu Jul 20, 2017 2:42 pm, edited 1 time in total.
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