John Garver
@geogarver.bsky.social
Prof. of Geology, Cordilleran tectonics, rivers, hydrology, ice jams, water quality, invasive species, natural disasters, geochronology. Mohawk and Hudson watersheds. Board of Riverkeeper. Alaska, PNW, Maine, NY. "Notes from a Watershed" @ substack
Reposted by John Garver
Latest News: PFAS Litigation Expands as Federal Rules Take Effect: As federal PFAS standards enter implementation and Superfund liability expands, litigation exposure is broadening beyond manufacturers. #NorthAmerica #PublicSpaces #FacilitiesManagement Read More
PFAS Litigation Expands as Federal Rules Take Effect
As federal PFAS standards enter implementation and Superfund liability expands, litigation exposure is broadening beyond manufacturers.
dlvr.it
February 12, 2026 at 5:23 AM
Latest News: PFAS Litigation Expands as Federal Rules Take Effect: As federal PFAS standards enter implementation and Superfund liability expands, litigation exposure is broadening beyond manufacturers. #NorthAmerica #PublicSpaces #FacilitiesManagement Read More
Reposted by John Garver
PFAS bills moving through New York Legislature
PFAS bills moving through New York Legislature
State senators in New York are celebrating the passage of two bills that would regulate toxic "forever" chemicals.
www.wamc.org
February 12, 2026 at 7:16 PM
PFAS bills moving through New York Legislature
Reposted by John Garver
New York’s reliance on gas is driving energy bill hikes - @governor.ny.gov pursuit of more gas will make it worse. Read my words via @lohud.com here: www.lohud.com/story/opinio...
An all-of-the-above approach on energy will cost New Yorkers | Opinion
Fossil fuels remain unreliable and must not have a leading place in New York's energy strategy moving forward.
www.lohud.com
February 12, 2026 at 9:52 PM
New York’s reliance on gas is driving energy bill hikes - @governor.ny.gov pursuit of more gas will make it worse. Read my words via @lohud.com here: www.lohud.com/story/opinio...
Reposted by John Garver
There's no doubt it has been persistently cold in New England this winter. While certainly not historic, this has been among the colder winters in recent memory. There remains a coastal storm to watch next week. #MAwx #CTwx #RIwx #NHwx #MEwx #Vtwx newenglandstormcenter.substack.com/p/putting-th...
Putting This Winter in Perspective for New England (Plus Upcoming Storm Trends)
As temperatures have risen over the past couple days, it has marked the end of some cold streaks for southern New England.
newenglandstormcenter.substack.com
February 12, 2026 at 2:33 PM
"State senators in NY are celebrating the passage of two bills that would regulate toxic "forever" chemicals. The bills would prohibit PFAS in consumer products ... and regulate and expand testing for PFAS discharged into New York’s lakes, rivers, and groundwater."
www.wamc.org/news/2026-02...
www.wamc.org/news/2026-02...
PFAS bills moving through New York Legislature
State senators in New York are celebrating the passage of two bills that would regulate toxic "forever" chemicals.
www.wamc.org
February 12, 2026 at 9:12 PM
"State senators in NY are celebrating the passage of two bills that would regulate toxic "forever" chemicals. The bills would prohibit PFAS in consumer products ... and regulate and expand testing for PFAS discharged into New York’s lakes, rivers, and groundwater."
www.wamc.org/news/2026-02...
www.wamc.org/news/2026-02...
Reposted by John Garver
Help heal the Hudson 🌊 Volunteer with Riverkeeper!
Join the Riverkeeper Sweep on Sat., May 2 — the largest cleanup of the Hudson 👉 https://ow.ly/Fv3j50YaqGJ
Become a Volunteer Ambassador and help protect the river year-round👉 https://ow.ly/9xEC50YaqGH
Every action makes a difference 💙
Join the Riverkeeper Sweep on Sat., May 2 — the largest cleanup of the Hudson 👉 https://ow.ly/Fv3j50YaqGJ
Become a Volunteer Ambassador and help protect the river year-round👉 https://ow.ly/9xEC50YaqGH
Every action makes a difference 💙
February 11, 2026 at 8:30 PM
Help heal the Hudson 🌊 Volunteer with Riverkeeper!
Join the Riverkeeper Sweep on Sat., May 2 — the largest cleanup of the Hudson 👉 https://ow.ly/Fv3j50YaqGJ
Become a Volunteer Ambassador and help protect the river year-round👉 https://ow.ly/9xEC50YaqGH
Every action makes a difference 💙
Join the Riverkeeper Sweep on Sat., May 2 — the largest cleanup of the Hudson 👉 https://ow.ly/Fv3j50YaqGJ
Become a Volunteer Ambassador and help protect the river year-round👉 https://ow.ly/9xEC50YaqGH
Every action makes a difference 💙
Reposted by John Garver
Making Effective, Affordable Water Level Monitors
Making Effective, Affordable Water Level Monitors
Hackaday Article
hackaday.com
February 12, 2026 at 9:06 AM
Making Effective, Affordable Water Level Monitors
Reposted by John Garver
“ #PFAS contamination is not a single-source problem. It’s the predictable result of allowing these chemicals in everyday products & then acting surprised when they show up in our water, soil & food” (last week DEC said they aren’t considering a ban 😕)
spectrumlocalnews.com/nys/central-...
spectrumlocalnews.com/nys/central-...
New York lawmakers renew push for moratorium on spreading sewage sludge
The proposed bill passed the Senate last year, but didn't get a vote in the Assembly.
spectrumlocalnews.com
February 12, 2026 at 11:47 AM
“ #PFAS contamination is not a single-source problem. It’s the predictable result of allowing these chemicals in everyday products & then acting surprised when they show up in our water, soil & food” (last week DEC said they aren’t considering a ban 😕)
spectrumlocalnews.com/nys/central-...
spectrumlocalnews.com/nys/central-...
Reposted by John Garver
A coastal storm will move up the coast late this weekend. Trends continue to favor a track well out to sea, but it'll be worth keeping an eye on for the rest of the week as a northern stream system and elongated trough could play a role in the outcome. #MAwx #CTwx #RIwx #NHwx #MEwx #VTwx
February 12, 2026 at 1:01 AM
Reposted by John Garver
Just about all of my climate data visualizations should finally be updated to include the latest data through 2025/2026 🥹
For example...
Global Climate Indicators: zacklabe.com/climate-chan...
Polar Climate Indicators [all links for the different pages are listed here]: zacklabe.com/arctic-sea-i...
For example...
Global Climate Indicators: zacklabe.com/climate-chan...
Polar Climate Indicators [all links for the different pages are listed here]: zacklabe.com/arctic-sea-i...
Climate change indicators
All data are referenced at My visualizations: Arctic Climate Seasonality and Variability Arctic Sea Ice Extent and Concentration Arctic Sea Ice Volume and Thickness Arctic Temperatures Antarctic Se…
zacklabe.com
February 12, 2026 at 1:52 AM
Just about all of my climate data visualizations should finally be updated to include the latest data through 2025/2026 🥹
For example...
Global Climate Indicators: zacklabe.com/climate-chan...
Polar Climate Indicators [all links for the different pages are listed here]: zacklabe.com/arctic-sea-i...
For example...
Global Climate Indicators: zacklabe.com/climate-chan...
Polar Climate Indicators [all links for the different pages are listed here]: zacklabe.com/arctic-sea-i...
Reposted by John Garver
PFAS are among the most dangerous chemicals known to human health and eliminating these toxic substances is critical to safeguarding communities across New York.
February 10, 2026 at 11:37 PM
PFAS are among the most dangerous chemicals known to human health and eliminating these toxic substances is critical to safeguarding communities across New York.
Reposted by John Garver
www.nysenate.gov/legislation/... PFAS Disclosure bill passed the Senate. Contact your assembly person to support this step in starting to control these dangerous chemicals.
NY State Senate Bill 2025-S4574B
Enacts the "PFAS discharge disclosure act"; requires certain SPDES permit holders to conduct PFAS monitoring and disclose the results from such monitoring.
www.nysenate.gov
February 10, 2026 at 10:48 PM
www.nysenate.gov/legislation/... PFAS Disclosure bill passed the Senate. Contact your assembly person to support this step in starting to control these dangerous chemicals.
Reposted by John Garver
FDA doesn’t yet fully understand potential health risks of applying these to the skin on a daily basis. "All commercial grades of PTFE are contaminated with PFOA and PFOS, two of the most notorious and well-studied #PFAS." Um, and carcinogenic! Horrifying.
www.ewg.org/news-insight...
www.ewg.org/news-insight...
FDA reports over 50 PFAS ingredients intentionally added to 1,700 personal care products
Hundreds of personal care products people use every day may contain the toxic “forever chemicals
www.ewg.org
February 10, 2026 at 12:26 PM
FDA doesn’t yet fully understand potential health risks of applying these to the skin on a daily basis. "All commercial grades of PTFE are contaminated with PFOA and PFOS, two of the most notorious and well-studied #PFAS." Um, and carcinogenic! Horrifying.
www.ewg.org/news-insight...
www.ewg.org/news-insight...
Reposted by John Garver
Proud to join Maj. Leader Andrea Stewart-Cousins and my colleagues in announcing a package of environmental bills to hold corporate polluters accountable, reduce PFAS exposure, and protect our air and water.
With the EPA stepping back, states must step up to protect our communities.
With the EPA stepping back, states must step up to protect our communities.
February 10, 2026 at 5:02 PM
Proud to join Maj. Leader Andrea Stewart-Cousins and my colleagues in announcing a package of environmental bills to hold corporate polluters accountable, reduce PFAS exposure, and protect our air and water.
With the EPA stepping back, states must step up to protect our communities.
With the EPA stepping back, states must step up to protect our communities.
Reposted by John Garver
PFAS levels in #GreatLakes fish are dropping, study finds
The declining levels were driven by an industry phase-out of legacy PFAS chemicals
www.wpr.org/news/pfas-le...
The declining levels were driven by an industry phase-out of legacy PFAS chemicals
www.wpr.org/news/pfas-le...
PFAS levels in Great Lakes fish are dropping, study finds
A new study shows PFAS levels in Great Lakes fish are on the decline as manufacturers have phased out some chemicals in recent decades.
www.wpr.org
February 6, 2026 at 8:10 PM
PFAS levels in #GreatLakes fish are dropping, study finds
The declining levels were driven by an industry phase-out of legacy PFAS chemicals
www.wpr.org/news/pfas-le...
The declining levels were driven by an industry phase-out of legacy PFAS chemicals
www.wpr.org/news/pfas-le...
Really interesting paper about the northward shift of the boreal forest with an informative and well done video abstract summary.
bg.copernicus.org/articles/23/...
bg.copernicus.org/articles/23/...
Northward shift of boreal tree cover confirmed by satellite record
Abstract. The boreal forest has experienced the fastest warming of any forested biome in recent decades. While vegetation–climate models predict a northward migration of boreal tree cover, the long-te...
bg.copernicus.org
February 10, 2026 at 12:55 PM
Really interesting paper about the northward shift of the boreal forest with an informative and well done video abstract summary.
bg.copernicus.org/articles/23/...
bg.copernicus.org/articles/23/...
Reposted by John Garver
❄️TUESDAY - Snow on the way for #Maine. My latest thinking on timing, amounts, and bust potential ► pinetreeweather.substack.com/p/tuesdaywed...
#HeyBangor #PortlandMaine #theloaf #MEwx
#HeyBangor #PortlandMaine #theloaf #MEwx
Tuesday/Wednesday storm information and timeline
All you need to know
pinetreeweather.substack.com
February 10, 2026 at 10:37 AM
❄️TUESDAY - Snow on the way for #Maine. My latest thinking on timing, amounts, and bust potential ► pinetreeweather.substack.com/p/tuesdaywed...
#HeyBangor #PortlandMaine #theloaf #MEwx
#HeyBangor #PortlandMaine #theloaf #MEwx
Reposted by John Garver
Michael O'Toole (Canadian, 1963–2018)
"Soft Morning West Coast Trail", 2001.
Acrylic on Canvas, 76.2 × 76.2 cm.
Private Collection.
#art #painting #artist #BlueSkyArt
"Soft Morning West Coast Trail", 2001.
Acrylic on Canvas, 76.2 × 76.2 cm.
Private Collection.
#art #painting #artist #BlueSkyArt
February 9, 2026 at 10:25 AM
Michael O'Toole (Canadian, 1963–2018)
"Soft Morning West Coast Trail", 2001.
Acrylic on Canvas, 76.2 × 76.2 cm.
Private Collection.
#art #painting #artist #BlueSkyArt
"Soft Morning West Coast Trail", 2001.
Acrylic on Canvas, 76.2 × 76.2 cm.
Private Collection.
#art #painting #artist #BlueSkyArt
Reposted by John Garver
It’s all up hill from here!
I don’t know about you, but I’m ready for a thaw! For most around US and all of us in #Florida, warmth will build and last for the next 2 weeks. The exception: the West, chilly and snowy for the ski resorts. A win-win for all!
I don’t know about you, but I’m ready for a thaw! For most around US and all of us in #Florida, warmth will build and last for the next 2 weeks. The exception: the West, chilly and snowy for the ski resorts. A win-win for all!
February 9, 2026 at 1:26 PM
It’s all up hill from here!
I don’t know about you, but I’m ready for a thaw! For most around US and all of us in #Florida, warmth will build and last for the next 2 weeks. The exception: the West, chilly and snowy for the ski resorts. A win-win for all!
I don’t know about you, but I’m ready for a thaw! For most around US and all of us in #Florida, warmth will build and last for the next 2 weeks. The exception: the West, chilly and snowy for the ski resorts. A win-win for all!
Reposted by John Garver
Relative elevation models are both compelling visualizations of fluvial systems but also frankly useful for geologic mapping of terraces or quantifying zones of potential flood inundation. Several years ago Open Topography coded up an method for using python to make REMs (see below) 🧵
February 9, 2026 at 8:37 PM
Relative elevation models are both compelling visualizations of fluvial systems but also frankly useful for geologic mapping of terraces or quantifying zones of potential flood inundation. Several years ago Open Topography coded up an method for using python to make REMs (see below) 🧵
Reposted by John Garver
what a winter wonderland. can even see the ice breaking apart over Lake Erie
#weather #satellite #goes #wxsky
#weather #satellite #goes #wxsky
February 8, 2026 at 7:39 PM
what a winter wonderland. can even see the ice breaking apart over Lake Erie
#weather #satellite #goes #wxsky
#weather #satellite #goes #wxsky
Reposted by John Garver
February 8, 2026 at 8:18 AM
Reposted by John Garver
The last week has been exceptionally amplified. The average temps for the 7 day stretch were 10-20° F above normal West, 10-15° East. That’s not an easy feat! 100s of records broken!
February 7, 2026 at 5:42 PM
The last week has been exceptionally amplified. The average temps for the 7 day stretch were 10-20° F above normal West, 10-15° East. That’s not an easy feat! 100s of records broken!
Reposted by John Garver
February 8, 2026 at 7:37 PM