Profile avatar
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
310 posts 1,359 followers 1,001 following
Prolific Poster

yourlocalepidemiologist.substack.com/p/h5n1-updat...

Shoreline rocks and black spruce trees reflect off the water surface of Dryberry Lake, Ontario, Canada. #rocks #shoreline #canada #boreal #photography #nature

Check out these talks that will be happening for Canadian invasive species week. They are free. canadainvasives.ca/2025-nationa...

Our series on per- and polyfluoroalkyl substances (PFAS, or "forever chemicals") in biosolids continues. In part 3, @laurarabinow.bsky.social examines cases of contamination and explores why regulatory processes have not resulted in significant new federal rules. rockinst.org/blog/an-over...

“Dam failures are rare in New York, and we want to keep it that way,” DiNapoli said. NYS Dam audit finds DEC needs to enforce dam safety regulations. www.osc.ny.gov/press/releas...

Channel and floodplain of the Ohio River at Evansville, Indiana, part of relative elevation model (REM) I produced sometime in the past and just remembered.

Beavers can cause property damage, but research shows they positively impact the environment. Some landowners are ditching traps and dynamite to peacefully manage the nuisance. buff.ly/4b0PpOg

"...we killed off a substantial part of our natural water system—one that is now foundering in sewage, hosepipe bans and bankrupt water companies. The return of the humble beaver, believe it or not, could go a long way towards solving all those problems."

Wintry scenes of the #MohawkRiver below #CohoesFalls this morning. From Cohoes looking across the river at Waterford. #Photography #BlackandWhitePhotography

"... like a bunch of dominos falling over these icecliffs just topple. We've seen that in Jakobshavn glacier... these immense ice cliffs 30km long just BOOM - if that really plays out at large scale around Antarctica we're grossly underestimating the amount of sea level rise" @timnaish.bsky.social

Ła’yag̱aguemk “New Moon” mask carved this child’s mask for Hoobiyee 2018 as we begin new year I’m making the intangible, tangible by exercising my Gitsonk power and asking the universe to bless us with little ones. universe loves it when we state our intentions And the following year we had Hayetsk!

NASA puts odds of asteroid hitting earth at 3.1%—“making it the most threatening space rock ever recorded by modern forecasting”. Yay. www.france24.com/en/live-news...

Please let the GEO/EAR community know: Program Directors and Mission Support who’ve been at NSF under two years were just terminated via Zoom. Even those of us whose offer letter stated one probationary year and whose government data states “permanent”.

This is one of my all-time NPS visitor center favorite displays is in Death Valley. A simple wood block model showing how crustal extension and normal faulting can create the Basin and Range. Each edge of the block at the end of the motion is a mountain and the low spots are valleys.

Today at #SaratogaNationalHistoricalPark. Enslaved people owned by the Schuyler family are believed to have lived in the space over the attached kitchen and the attic of the house. Tours have increasingly included the lives of these people. We'll see... @altnps.bsky.social #BlackHistoryMonth

"American Rivers estimates that 85 percent of U.S. dams are unnecessary at best and pose risks to public safety at worst, should they collapse and flood downstream communities. " @riverkeeper.org e360.yale.edu/features/nor...

Remnants of Japanese knotweed can still be seen in midwinter.

Great to see this lone snow bunting yesterday.

Topographic differencing using Lidar to understand impacts of the 2025 Palisades and Eaton fires. #Altadena @opentopography.org opentopography.org/blog/using-l...

There's such a lesson here for nature-depleted UK and Ireland: "A beaver colony has gained overnight fame by (...) creating a natural wetland exactly where it was needed. It saved the local authorities 30 million crowns, and has the public cracking jokes about public administration and red tape".

Hey @agu.org put it back or we (your members) are OUT

Two from this afternoon after last night's snow. #PeeblesIsland #WaterfordNY #MohawkRiver #Photography #BlackandWhitePhotography

Which is more important in determining tree cover here, the drumlin topography or property lines based on the public land survey system? Hard to say. Lidar digital surface model of an area in eastern Dane County, WI. See the pines planted in rows parallel to the drumlins in the upper right?

February in Maine. #maine

Saturday ice update - #Arctic sea ice extent is currently the *lowest* on record (JAXA data) • about 790,000 km² below the 2010s mean • about 1,450,000 km² below the 2000s mean • about 2,040,000 km² below the 1990s mean • about 2,430,000 km² below the 1980s mean Plots: zacklabe.com/arctic-sea-i...

Cohoes Falls

Over 500GB of climate data including 300 GSOD stations, 200 GHCNh stations, most NCEP reanalysis products, all OISST products, 126 USGS stream gauges, and all of the CHIRPS daily data are saved to this hard drive. More downloading tomorrow…

Watched the PBS News Hour tonight to catch up on today’s news and what did I see? This gem, which is just what I needed in my news cycle. Check it out - I love hydrology! Featuring Emily Fairfax! youtu.be/F-HWKkIyfl0?...

Something else to thank EM for. "The sustained rate of daily reentries is unprecedented," says Jonathan McDowell, an astronomer at the Harvard Center for Astrophysics who tracks satellites. "They are retiring and incinerating about 4 or 5 Starlinks every day." @planet4589.bsky.social #astronomy

Sigidmna’ax Gwishalaayt Ts’imilx (chilkat Beaver Matriarch) Digital art Collection of Arlene Roberts Kitsumkalum, BC #art #mikedangeliart

Faxes are a piece of paper someone has to deal this. If they have a fax machine fax them. Emails can be ignored fax machines make noise and the paper piles up.

#Maine

#Maine

Guess we've re-stocked our road salt....

www.jpl.nasa.gov/news/nasa-ra... 🧪⚒️

29th totem pole honouring and commemorating our Murdered and missing relatives and Residential school survivors 10’ Red cedar, acrylic paint, mirrors, abalone shell Prince Rupert, BC

Bear Digital art

Eagle Digital art Private collection Vancouver, BC

Super interesting new research paper out of #SluAQUA - "Bomb radiocarbon dating and age estimation of European eel (Anguilla anguilla) of Norway" - Andrews AH et al. doi.org/10.1017/RDC.... 🧪🐟💣🌎🐠

In hearing yesterday, Sen. Grassley: "Agricultural- I expect you to leave agricultural to practice regulations to the proper agencies & for the most part that's FDA & EPA." Many pesticides & biosolids have chems causing disease, how can HHS ignore those decisions?? #PFAS truthout.org/articles/tru...

Yes that was an earthquake! www.bostonglobe.com/2025/01/27/m...

Ooft

Sounds like Lake Ontario will be lively this afternoon. There are 3-4 m waves from SW forecast weather.gc.ca/marine/forec...

Small part of Antarctica. Image taken by Sentinel-2 on Nov. 1, 2024.