@gslsentinel.bsky.social
The Great Salt Lake's unofficial watchdog, blending hydrology with weather watch, advocating for natural precipitation and better water management over conservation myths.
Pinned
Impoundment Depletion: A New Hydrologic Paradigm Grounded in the Great Salt Lake Basin
Impoundments represent the largest unmeasured anthropogenic source of depletion in the Great Salt Lake Basin. Using satellite imagery, aerial datasets, and surface‑area‑based evaporation modeling, we ...
zenodo.org
My study into anthropogenic (human attributed) depletions of the #GreatSaltLake water basin.
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
For anyone following the #GreatSaltLake, this study is worth reading: a decade of PM10 data showing no dust trend and no lake-level correlation. It adds important context to the conversation. #Utah
doi.org/10.1016/j.sc...
doi.org/10.1016/j.sc...
Redirecting
doi.org
January 16, 2026 at 4:50 AM
For anyone following the #GreatSaltLake, this study is worth reading: a decade of PM10 data showing no dust trend and no lake-level correlation. It adds important context to the conversation. #Utah
doi.org/10.1016/j.sc...
doi.org/10.1016/j.sc...
1/13/2025 Audit of:
#GreatSaltLake Data and insight summary document ~UTDNR
A synthesized resource document for the 2026 General Legislative Session.
Audit lines captured in highlighted Yellow.
#Utah #utleg #utpol
drive.google.com/file/d/1DCo3...
#GreatSaltLake Data and insight summary document ~UTDNR
A synthesized resource document for the 2026 General Legislative Session.
Audit lines captured in highlighted Yellow.
#Utah #utleg #utpol
drive.google.com/file/d/1DCo3...
GSLaudit-Jan2026.pdf
drive.google.com
January 14, 2026 at 2:36 AM
1/13/2025 Audit of:
#GreatSaltLake Data and insight summary document ~UTDNR
A synthesized resource document for the 2026 General Legislative Session.
Audit lines captured in highlighted Yellow.
#Utah #utleg #utpol
drive.google.com/file/d/1DCo3...
#GreatSaltLake Data and insight summary document ~UTDNR
A synthesized resource document for the 2026 General Legislative Session.
Audit lines captured in highlighted Yellow.
#Utah #utleg #utpol
drive.google.com/file/d/1DCo3...
UTDNR is trying to claim M&I depletions are 26%, this is far from the truth of 7%.
It is not math; it is narrative manipulation.
It is not math; it is narrative manipulation.
January 12, 2026 at 4:38 PM
UTDNR is trying to claim M&I depletions are 26%, this is far from the truth of 7%.
It is not math; it is narrative manipulation.
It is not math; it is narrative manipulation.
Story came across my feed today; I found it intriguing.
I have no desire for monetary gain or dragging things into court, but I really like finding gaps, overstepping evidence and calling out exaggerations and speculation.
I totally understand the hobby.
www.thetimes.com/uk/science/a...
I have no desire for monetary gain or dragging things into court, but I really like finding gaps, overstepping evidence and calling out exaggerations and speculation.
I totally understand the hobby.
www.thetimes.com/uk/science/a...
Amateur sleuth earns £2m reward for exposing research fraud
A British scientist has forced a leading US cancer research institute to pay a $15m legal settlement after trawling through scientific papers in his spare time
www.thetimes.com
January 12, 2026 at 12:47 AM
Story came across my feed today; I found it intriguing.
I have no desire for monetary gain or dragging things into court, but I really like finding gaps, overstepping evidence and calling out exaggerations and speculation.
I totally understand the hobby.
www.thetimes.com/uk/science/a...
I have no desire for monetary gain or dragging things into court, but I really like finding gaps, overstepping evidence and calling out exaggerations and speculation.
I totally understand the hobby.
www.thetimes.com/uk/science/a...
1/
Three years ago, I started encircling the concept of "non-return storage". The biggest value paradigm in my study. The pushback was that "water could reenter the system".
Unfortunately, that sidelined me from perusing that line framework.
Three years ago, I started encircling the concept of "non-return storage". The biggest value paradigm in my study. The pushback was that "water could reenter the system".
Unfortunately, that sidelined me from perusing that line framework.
January 11, 2026 at 4:51 PM
1/
Three years ago, I started encircling the concept of "non-return storage". The biggest value paradigm in my study. The pushback was that "water could reenter the system".
Unfortunately, that sidelined me from perusing that line framework.
Three years ago, I started encircling the concept of "non-return storage". The biggest value paradigm in my study. The pushback was that "water could reenter the system".
Unfortunately, that sidelined me from perusing that line framework.
U of U junk science infiltrates the GSL strike team report.
"water-free approaches"
Using different language to claim the lake will dry up in a couple of years so they can get more funding for future junk science.
Swear to god U of U professors are not fit to teach 3rd grade science. Parasites.
"water-free approaches"
Using different language to claim the lake will dry up in a couple of years so they can get more funding for future junk science.
Swear to god U of U professors are not fit to teach 3rd grade science. Parasites.
January 11, 2026 at 12:55 AM
U of U junk science infiltrates the GSL strike team report.
"water-free approaches"
Using different language to claim the lake will dry up in a couple of years so they can get more funding for future junk science.
Swear to god U of U professors are not fit to teach 3rd grade science. Parasites.
"water-free approaches"
Using different language to claim the lake will dry up in a couple of years so they can get more funding for future junk science.
Swear to god U of U professors are not fit to teach 3rd grade science. Parasites.
1/
Mark my words
The placement of monitoring will be used to manipulate the public perception of GSL dust affecting the Wasatch front.
A lot of monitoring between GSL and the Wasatch Front.
Large gaps in monitoring on the other sides of the lake.
Mark my words
The placement of monitoring will be used to manipulate the public perception of GSL dust affecting the Wasatch front.
A lot of monitoring between GSL and the Wasatch Front.
Large gaps in monitoring on the other sides of the lake.
January 10, 2026 at 8:20 AM
1/
Mark my words
The placement of monitoring will be used to manipulate the public perception of GSL dust affecting the Wasatch front.
A lot of monitoring between GSL and the Wasatch Front.
Large gaps in monitoring on the other sides of the lake.
Mark my words
The placement of monitoring will be used to manipulate the public perception of GSL dust affecting the Wasatch front.
A lot of monitoring between GSL and the Wasatch Front.
Large gaps in monitoring on the other sides of the lake.
They tell us one thing; actual measuring tells us another.
2023 was the highest water level in this set of years, yet PM10 showed higher than other years.
The opposite of matching lake decline.
Harrisville monitoring station.
2023 was the highest water level in this set of years, yet PM10 showed higher than other years.
The opposite of matching lake decline.
Harrisville monitoring station.
January 9, 2026 at 10:50 PM
They tell us one thing; actual measuring tells us another.
2023 was the highest water level in this set of years, yet PM10 showed higher than other years.
The opposite of matching lake decline.
Harrisville monitoring station.
2023 was the highest water level in this set of years, yet PM10 showed higher than other years.
The opposite of matching lake decline.
Harrisville monitoring station.
Even at a low relatively low elevation, Great Salt Lake produces Lake effect snow.
January 9, 2026 at 7:24 AM
Even at a low relatively low elevation, Great Salt Lake produces Lake effect snow.
2026 #GreatSaltLake strike team report came out.
2 pages on Phragmites challenges.
Phragmites Paradox can be fixed. Anthropogenic impoundments create the lateral seepage zones that proliferate the spread of phragmites.
Rotating areas of wetting can dry out zones inhibiting and declining spread.
2 pages on Phragmites challenges.
Phragmites Paradox can be fixed. Anthropogenic impoundments create the lateral seepage zones that proliferate the spread of phragmites.
Rotating areas of wetting can dry out zones inhibiting and declining spread.
January 8, 2026 at 7:37 AM
2026 #GreatSaltLake strike team report came out.
2 pages on Phragmites challenges.
Phragmites Paradox can be fixed. Anthropogenic impoundments create the lateral seepage zones that proliferate the spread of phragmites.
Rotating areas of wetting can dry out zones inhibiting and declining spread.
2 pages on Phragmites challenges.
Phragmites Paradox can be fixed. Anthropogenic impoundments create the lateral seepage zones that proliferate the spread of phragmites.
Rotating areas of wetting can dry out zones inhibiting and declining spread.
1/
I used to think peer review was a guarantee of scientific reliability. Working on #GreatSaltLake has taught me something different.
#science
I used to think peer review was a guarantee of scientific reliability. Working on #GreatSaltLake has taught me something different.
#science
January 4, 2026 at 11:06 PM
1/
I used to think peer review was a guarantee of scientific reliability. Working on #GreatSaltLake has taught me something different.
#science
I used to think peer review was a guarantee of scientific reliability. Working on #GreatSaltLake has taught me something different.
#science
#GreatSaltLake by the numbers
Jan. 4, 2016, vs. Jan. 4, 2026, 10-year GSL elevation change: -1.1', from 4192.6' to 4191.5'
Gives us an average of -0.11 feet per year or a 1.3 inches of decline per year.
Jan. 4, 2016, vs. Jan. 4, 2026, 10-year GSL elevation change: -1.1', from 4192.6' to 4191.5'
Gives us an average of -0.11 feet per year or a 1.3 inches of decline per year.
January 4, 2026 at 5:39 AM
#GreatSaltLake by the numbers
Jan. 4, 2016, vs. Jan. 4, 2026, 10-year GSL elevation change: -1.1', from 4192.6' to 4191.5'
Gives us an average of -0.11 feet per year or a 1.3 inches of decline per year.
Jan. 4, 2016, vs. Jan. 4, 2026, 10-year GSL elevation change: -1.1', from 4192.6' to 4191.5'
Gives us an average of -0.11 feet per year or a 1.3 inches of decline per year.
1/
Three years ago, I hypothesized that impoundments were a major, overlooked driver of reduced inflows to the #GreatSaltLake. The clue was Jordanelle: in 2023 it absorbed nearly the entire Jordan River runoff. A record snowpack vanished into a single reservoir.
Three years ago, I hypothesized that impoundments were a major, overlooked driver of reduced inflows to the #GreatSaltLake. The clue was Jordanelle: in 2023 it absorbed nearly the entire Jordan River runoff. A record snowpack vanished into a single reservoir.
Pie graph with Anthropogenic marsh holds separated out for visual.
January 1, 2026 at 5:32 PM
1/
Three years ago, I hypothesized that impoundments were a major, overlooked driver of reduced inflows to the #GreatSaltLake. The clue was Jordanelle: in 2023 it absorbed nearly the entire Jordan River runoff. A record snowpack vanished into a single reservoir.
Three years ago, I hypothesized that impoundments were a major, overlooked driver of reduced inflows to the #GreatSaltLake. The clue was Jordanelle: in 2023 it absorbed nearly the entire Jordan River runoff. A record snowpack vanished into a single reservoir.
Pie graph with Anthropogenic marsh holds separated out for visual.
December 31, 2025 at 10:11 PM
Pie graph with Anthropogenic marsh holds separated out for visual.
My study into anthropogenic (human attributed) depletions of the #GreatSaltLake water basin.
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
Impoundment Depletion: A New Hydrologic Paradigm Grounded in the Great Salt Lake Basin
Impoundments represent the largest unmeasured anthropogenic source of depletion in the Great Salt Lake Basin. Using satellite imagery, aerial datasets, and surface‑area‑based evaporation modeling, we ...
zenodo.org
December 29, 2025 at 6:57 PM
My study into anthropogenic (human attributed) depletions of the #GreatSaltLake water basin.
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
#utah #waterwise #utpol #utleg #GSLscience #hydrology #coloradoriver #lakepowell #lakemead #salinelakes #waterconservation #UTDNR
zenodo.org/records/1808...
Years ago, in some comment section someone made a wise crack comment to another person: if you think you can do it better, you should make a study yourself", In an attempt to belittle the other person, that comment stuck with me.
So, I did, not an easy task.
So, I did, not an easy task.
December 29, 2025 at 8:17 AM
Years ago, in some comment section someone made a wise crack comment to another person: if you think you can do it better, you should make a study yourself", In an attempt to belittle the other person, that comment stuck with me.
So, I did, not an easy task.
So, I did, not an easy task.
As a side finding of my research on #GreatSaltLake #Hydrology.
#Utah #utleg #environment
sway.cloud.microsoft/BGMxjJT9YpyG...
#Utah #utleg #environment
sway.cloud.microsoft/BGMxjJT9YpyG...
Hidden Great Salt Lake Water Loss
By James Ferrin
sway.cloud.microsoft
December 19, 2025 at 11:37 PM
As a side finding of my research on #GreatSaltLake #Hydrology.
#Utah #utleg #environment
sway.cloud.microsoft/BGMxjJT9YpyG...
#Utah #utleg #environment
sway.cloud.microsoft/BGMxjJT9YpyG...
Counter to the narrative about GSL blowing PM2.5. The yellow shows the stagnant period where urban PM2.5 pollution filled the valley. Then the winds came, instead of blowing GSL PM2.5 on us, it blew it away. This is not a 1-off scenario, my bet is that it occurs more often than GSL dust is lifted.
December 18, 2025 at 4:32 PM
Counter to the narrative about GSL blowing PM2.5. The yellow shows the stagnant period where urban PM2.5 pollution filled the valley. Then the winds came, instead of blowing GSL PM2.5 on us, it blew it away. This is not a 1-off scenario, my bet is that it occurs more often than GSL dust is lifted.
1/
I am still measuring and calculating the surface acre footprint of anthropogenic impoundments. 3/4's done and I am showing that impoundments are roughly half the size of GSL's current footprint. When I say humans have been moving the shores of GSL to different locations, I'm not kidding.
I am still measuring and calculating the surface acre footprint of anthropogenic impoundments. 3/4's done and I am showing that impoundments are roughly half the size of GSL's current footprint. When I say humans have been moving the shores of GSL to different locations, I'm not kidding.
December 6, 2025 at 2:23 AM
1/
I am still measuring and calculating the surface acre footprint of anthropogenic impoundments. 3/4's done and I am showing that impoundments are roughly half the size of GSL's current footprint. When I say humans have been moving the shores of GSL to different locations, I'm not kidding.
I am still measuring and calculating the surface acre footprint of anthropogenic impoundments. 3/4's done and I am showing that impoundments are roughly half the size of GSL's current footprint. When I say humans have been moving the shores of GSL to different locations, I'm not kidding.
The hard part in writing a scientific paper is not gathering the evidence and data, It's the damn computer work🤢
December 5, 2025 at 10:40 PM
The hard part in writing a scientific paper is not gathering the evidence and data, It's the damn computer work🤢
Bravo! UPR's Erin Lewis
Finally, quality GSL reporting minus exaggerated fearmongering from speculation.
Keep up the good work Erin.🏆
#GreatSaltLake #Utahmedia #Utah
www.upr.org/environment/...
Finally, quality GSL reporting minus exaggerated fearmongering from speculation.
Keep up the good work Erin.🏆
#GreatSaltLake #Utahmedia #Utah
www.upr.org/environment/...
Despite low levels, the Great Salt Lake is seeing positive trends
Brian Steed, the Great Salt Lake Commissioner, shared low Great Salt Lake levels on Nov. 20, 2025.
www.upr.org
November 30, 2025 at 9:33 PM
Bravo! UPR's Erin Lewis
Finally, quality GSL reporting minus exaggerated fearmongering from speculation.
Keep up the good work Erin.🏆
#GreatSaltLake #Utahmedia #Utah
www.upr.org/environment/...
Finally, quality GSL reporting minus exaggerated fearmongering from speculation.
Keep up the good work Erin.🏆
#GreatSaltLake #Utahmedia #Utah
www.upr.org/environment/...
#GreatSaltLake fuel forecast
More snow today, 2.5"❄️ so far on GSL👏👏
11/2M, 11/5-7L-H❄️❄️❄️
Adding to Nov. accumulation!! Good start to Dec.!
#utwx #cowx #Idwx #wywx #SKI #Skiutah #skiIdaho #skicolorado #skiwyoming #nvwx #mtwx #CAwx #azwx
www.youtube.com/watch?v=CNba...
More snow today, 2.5"❄️ so far on GSL👏👏
11/2M, 11/5-7L-H❄️❄️❄️
Adding to Nov. accumulation!! Good start to Dec.!
#utwx #cowx #Idwx #wywx #SKI #Skiutah #skiIdaho #skicolorado #skiwyoming #nvwx #mtwx #CAwx #azwx
www.youtube.com/watch?v=CNba...
Utah/Colorado Snow, Mountain Weather Update 11/30, Meteorologist Chris Tomer
YouTube video by Chris Tomer
www.youtube.com
November 30, 2025 at 5:08 PM
#GreatSaltLake fuel forecast
More snow today, 2.5"❄️ so far on GSL👏👏
11/2M, 11/5-7L-H❄️❄️❄️
Adding to Nov. accumulation!! Good start to Dec.!
#utwx #cowx #Idwx #wywx #SKI #Skiutah #skiIdaho #skicolorado #skiwyoming #nvwx #mtwx #CAwx #azwx
www.youtube.com/watch?v=CNba...
More snow today, 2.5"❄️ so far on GSL👏👏
11/2M, 11/5-7L-H❄️❄️❄️
Adding to Nov. accumulation!! Good start to Dec.!
#utwx #cowx #Idwx #wywx #SKI #Skiutah #skiIdaho #skicolorado #skiwyoming #nvwx #mtwx #CAwx #azwx
www.youtube.com/watch?v=CNba...
For 3 years we have been hearing bitching and moaning about #GreatSaltLake plight.
What we have not heard is any plan to get more water to the lake. Not 1 single effective measure.
Water conservation = reservoir storage.
Water donations = loans repaid in spring.
Cloud seeding = reservoir storage.
What we have not heard is any plan to get more water to the lake. Not 1 single effective measure.
Water conservation = reservoir storage.
Water donations = loans repaid in spring.
Cloud seeding = reservoir storage.
November 30, 2025 at 6:47 AM
For 3 years we have been hearing bitching and moaning about #GreatSaltLake plight.
What we have not heard is any plan to get more water to the lake. Not 1 single effective measure.
Water conservation = reservoir storage.
Water donations = loans repaid in spring.
Cloud seeding = reservoir storage.
What we have not heard is any plan to get more water to the lake. Not 1 single effective measure.
Water conservation = reservoir storage.
Water donations = loans repaid in spring.
Cloud seeding = reservoir storage.
Agriculture is not the largest human consumption.
I’ve measured >300,814 impoundment surface acres subject to evaporation, annually depleting 902,000–1,500,000 acre‑feet, with another ~1.5 million acre‑feet of non‑return flow.
This is independently verifiable, and I welcome it.
#GreatSaltLake
I’ve measured >300,814 impoundment surface acres subject to evaporation, annually depleting 902,000–1,500,000 acre‑feet, with another ~1.5 million acre‑feet of non‑return flow.
This is independently verifiable, and I welcome it.
#GreatSaltLake
November 29, 2025 at 5:19 PM
Agriculture is not the largest human consumption.
I’ve measured >300,814 impoundment surface acres subject to evaporation, annually depleting 902,000–1,500,000 acre‑feet, with another ~1.5 million acre‑feet of non‑return flow.
This is independently verifiable, and I welcome it.
#GreatSaltLake
I’ve measured >300,814 impoundment surface acres subject to evaporation, annually depleting 902,000–1,500,000 acre‑feet, with another ~1.5 million acre‑feet of non‑return flow.
This is independently verifiable, and I welcome it.
#GreatSaltLake
Statistics for the GSL do not add up.
Depletion estimates exceed yield; this is not possible.
I suspect yield underestimated and human consumption I know is overestimated
Depletion estimates exceed yield; this is not possible.
I suspect yield underestimated and human consumption I know is overestimated
November 27, 2025 at 2:28 AM
Statistics for the GSL do not add up.
Depletion estimates exceed yield; this is not possible.
I suspect yield underestimated and human consumption I know is overestimated
Depletion estimates exceed yield; this is not possible.
I suspect yield underestimated and human consumption I know is overestimated