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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.

Re: 2017 Mosquito Reports

Postby kpeter » Sun Sep 03, 2017 6:17 pm

Big McGee Lake Sept 1 and Sept 2.
Mosquitoes were numerous and aggressive from 4 pm to 9pm--I would say a 4
They were present even in the middle of the day especially around meadows, marshes, and stagnant water--3.
Only a breeze kept them at bay and the breeze at the lake was intermittent and not constant enough to provide relief for much of the time.
My daughter was sufficiently miserable that we cut the trip short.
No mosquitoes below appx. 9000 feet. We made it to 11000 without losing them.

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Re: 2017 Mosquito Reports

Postby TFTF » Mon Sep 04, 2017 8:49 pm

9/1 Tomahawk Lake in Humphreys Basin - 2-3 (used headnet at dusk)
9/2 Below (just west of) Pine Creek Pass - 3+ (my friend would argue 4)
9/3 Royce Lakes - 1 (breezy, was there in afternoon)
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Re: 2017 Mosquito Reports

Postby rayfound » Mon Sep 04, 2017 10:09 pm

Well, My experience same time as TFTF was a bit different - Though I did apply deet a couple times a day, my experience was more in the (2) range for all:

Tomahawk/Mesa/Puppet/French Canyon/Elba/Pine Creek Pass.

That said - TFTF - You wouldn't happen to be one of the ladies we talked to on Saturday morning before ascending puppet pass would you?
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Re: 2017 Mosquito Reports

Postby Buford » Tue Sep 05, 2017 9:52 am

September 1-4

Baxter Pass trail east side - 0
Baxter Lakes - 2-4 - Wind cleared them out good.
Sixty Lakes 1-4 depending on which lake and time of day.

Some areas almost none, some large swarms with 10+ landing on you at once trying to extract the blood toll for being there. Wind helped. Headnet required. No cowboy camping. DEET would have been nice.
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Re: 2017 Mosquito Reports

Postby sambieni » Tue Sep 05, 2017 9:57 am

August 28 - September 1: SEKI Deadman Canyon Loop

Ranger Lake: 2
Roaring River: 2
Deadman Canyon: 1
Bearpaw Meadow: 3
HST Hike out: 3-4 (lots of gnats too) on last 3-5 miles
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Re: 2017 Mosquito Reports

Postby BayHiker » Tue Sep 05, 2017 10:25 am

August 29-31

Lyell Canyon, near where Maclure Creek flows into the Lyell Fork: 2
Basin below the Lyell Glacier's terminal moraine: 1 during the day, did not experience at dawn/dusk.

September 1-3

Dog Lake / Young Lakes trail: 2
Upper Young Lake: 3-4. I used my headnet over a broad-brimmed hat and tucked it into a rain shell. Wind helped when it was blowing, but it was intermittent at best.
Mt. Conness and approach: 1
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Re: 2017 Mosquito Reports

Postby JayOtheMountains » Tue Sep 05, 2017 11:24 am

9/3 - 9/4 Big Pine Creek Trailhead area 1

Spent the last day/night of the weekend slackpacking around Glacier Lodge. Bugs were unusually absent.
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Re: 2017 Mosquito Reports

Postby papercup » Wed Sep 06, 2017 3:59 pm


Lower Pine Lake to Honeymoon Lake-- 3
Granite Park-- 1, maybe a 2 in the lower parts
Bear Lakes Basin--1
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Aug 30-Sep 5 Rowell TH to Deadman Cyn & back

Postby wildhiker » Wed Sep 06, 2017 11:44 pm

Elevations 7000 feet (Sugarloaf Valley and Roaring River) to 11,400 feet (Elizabeth Pass & Horn Col).
Still air or light breezes. Almost always no mosquitos while walking (level 1). When stopped in damp areas, a few would try to land on you. Evening camps up to level 2 - at most half a dozen trying to land on you. Kept away with a little DEET. Always went away at dark, even though it wasn't very cold.

Hi Sambieni - I went up and back down Deadman Canyon on Sept 1-3, right after you. I thought mosquitoes were closer to level 1 at Roaring River but level 2 in Deadman Canyon.

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Re: 2017 Mosquito Reports

Postby jhfowler » Mon Sep 11, 2017 3:08 pm

9/6-8 Yosemite Trip. Tuolumne Meadows to Matterhorn Canyon to Matterhorn Pass to Stanton Pass down Spiller Creek and back down to Tuolumne Meadows, mosquitoes were a 0 everywhere. Yay!

Trip report here:
https://jimmyjamhikingclub.wordpress.co ... -yosemite/
https://jimmyjamhikingclub.wordpress.co ... horn-pass/
https://jimmyjamhikingclub.wordpress.co ... er-canyon/
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