It's all about the #baseflow #groundwater
5/27/25😳”Groundwater is disappearing 2.4 times faster than the surface water” www.theguardian.com/us-news/2025...
Colorado River basin has lost nearly the equivalent of an underground Lake Mead
Reservoir lost 27.8m acre-feet of groundwater in 20 years, study finds, vanishing ‘twice as fast as surface water’
www.theguardian.com
May 31, 2025 at 12:56 AM
It's all about the #baseflow #groundwater
Hydrology Paper of the Day @mzaerpour.bsky.social on spatial and temporal linkages between baseflow and climate: the importance of precipitation and regions; evapotranspiration and estimation of hydrological drought; streamflow partitioning; and application of the PCMCI+ causal discovery algorithm.
Excited to share our work, Climate shapes baseflows, influencing drought severity.
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
January 29, 2025 at 4:55 AM
Hydrology Paper of the Day @mzaerpour.bsky.social on spatial and temporal linkages between baseflow and climate: the importance of precipitation and regions; evapotranspiration and estimation of hydrological drought; streamflow partitioning; and application of the PCMCI+ causal discovery algorithm.
And the spatial variability involved can be at least approximately mapped at the scale of that USGS map. Which would be much more useful in conveying the impacts on water availability, impact on stream baseflow, etc.
January 21, 2026 at 2:28 AM
And the spatial variability involved can be at least approximately mapped at the scale of that USGS map. Which would be much more useful in conveying the impacts on water availability, impact on stream baseflow, etc.
That braided channel pattern (though often with only one carrying baseflow) is typical of steep headwaters streams draining dolomite or quartzite ridges in the Driftless Area and adjacent landscapes (including this area, glaciated in the Early to Middle Pleistocene). Data from @opentopography.org
July 12, 2025 at 2:38 PM
That braided channel pattern (though often with only one carrying baseflow) is typical of steep headwaters streams draining dolomite or quartzite ridges in the Driftless Area and adjacent landscapes (including this area, glaciated in the Early to Middle Pleistocene). Data from @opentopography.org
It can take years for rivers to recover from droughts because baseflow (groundwater) that supplies them from below is depleted. Ecologist Douglas Sheil has argued that baseflow is more imp to humans than annual flow b/c it supplies humans in dry seasons. news.ucr.edu/articles/202...
November 2, 2023 at 7:57 PM
It can take years for rivers to recover from droughts because baseflow (groundwater) that supplies them from below is depleted. Ecologist Douglas Sheil has argued that baseflow is more imp to humans than annual flow b/c it supplies humans in dry seasons. news.ucr.edu/articles/202...
Hydrology Paper of the Day @tetzlaffecohyd.bsky.social on hydrological connectivity, urbanization, and importance of groundwater levels in the Wuhle catchment, Berlin: wavelets utilized to explore processes during wet and dry years; correlation and fourier transform analyses; drought; and baseflow.
New paper alert on long-term interconnections between rainfall, groundwater & streamflow in a urban river in Berlin. Despite strong influence of urban storm drainage groundwater was important reflecting the role of storage in regulating fluxes from the regional aquifer doi.org/10.1002/hyp....
doi.org
August 29, 2025 at 1:51 AM
Hydrology Paper of the Day @tetzlaffecohyd.bsky.social on hydrological connectivity, urbanization, and importance of groundwater levels in the Wuhle catchment, Berlin: wavelets utilized to explore processes during wet and dry years; correlation and fourier transform analyses; drought; and baseflow.
Pleased to share that our paper, "Evident Dependence of Dynamics of Baseflow on Groundwater Across the Contiguous United States, "is now online! - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Many thanks to my prof. Wang Lichun, Di Gao, and
@hylke_beck.
Many thanks to my prof. Wang Lichun, Di Gao, and
@hylke_beck.
Evident Dependence of Dynamics of Baseflow on Groundwater Across the Contiguous United States
Annual baseflow trends show spatial patterns: increasing in eastern watersheds and decreasing in western regions Groundwater level serves as a better metric for predicting baseflow dynamics compa...
agupubs.onlinelibrary.wiley.com
June 8, 2026 at 6:49 PM
Pleased to share that our paper, "Evident Dependence of Dynamics of Baseflow on Groundwater Across the Contiguous United States, "is now online! - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Many thanks to my prof. Wang Lichun, Di Gao, and
@hylke_beck.
Many thanks to my prof. Wang Lichun, Di Gao, and
@hylke_beck.
Excited to share our work, Climate shapes baseflows, influencing drought severity.
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
January 29, 2025 at 3:40 AM
Excited to share our work, Climate shapes baseflows, influencing drought severity.
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
We analyzed 7138 catchments to understand how precipitation, evaporative demand, and snow fraction affect baseflow and its connection to hydrological droughts. Read the article here:
doi.org/10.1088/1748...
Excited to share some new work using SWOT satellite data to understand the dynamics of small groundwater-dominated lakes. Demonstrates baseflow supply dynamics at regional scale, providing new GW-focused remote sensing data for resource management
Read here onlinelibrary.wiley.com/doi/abs/10.1...
Read here onlinelibrary.wiley.com/doi/abs/10.1...
Tracking Baseflow Supply Dynamics Using SWOT Data From Small Groundwater‐Dominated Lakes
Satellite-based measurements of groundwater flow-through kettle lakes efficiently track dynamic groundwater storage at local to regional scales (modified from USGS Scientific Investigations Report 20...
onlinelibrary.wiley.com
March 2, 2026 at 12:26 PM
Excited to share some new work using SWOT satellite data to understand the dynamics of small groundwater-dominated lakes. Demonstrates baseflow supply dynamics at regional scale, providing new GW-focused remote sensing data for resource management
Read here onlinelibrary.wiley.com/doi/abs/10.1...
Read here onlinelibrary.wiley.com/doi/abs/10.1...
Britain released two beavers into a 10-hectare forest; 5 years later, peak water flow fell 46.6% and baseflow rose by 417% | - The Times of India share.google/Qr3LIIuCC2rv...
Britain released two beavers into a 10-hectare forest; 5 years later, peak water flow fell 46.6% and baseflow rose by 417%
In 2019, two Eurasian beavers were released into a 10-hectare woodland in North Yorkshire, where their activity gradually reshaped the way water moved through the site. Over the next five years, the a...
share.google
September 16, 2026 at 9:54 PM
Britain released two beavers into a 10-hectare forest; 5 years later, peak water flow fell 46.6% and baseflow rose by 417% | - The Times of India share.google/Qr3LIIuCC2rv...
🔥💧 New paper out in Environmental Research: Water led by Brian Ebel!
Synthesis shows how wildfires fundamentally shift hydrologic processes and streamflow generation—from infiltration and runoff to baseflow and flood response — post wildfire.
iopscience.iop.org/article/10.1...
Synthesis shows how wildfires fundamentally shift hydrologic processes and streamflow generation—from infiltration and runoff to baseflow and flood response — post wildfire.
iopscience.iop.org/article/10.1...
A review and synthesis of post-wildfire shifts in hydrologic processes and streamflow generation mechanisms
A review and synthesis of post-wildfire shifts in hydrologic processes and streamflow generation mechanisms, Ebel, Brian A, Hammond, John C, Walvoord, Michelle A, Partridge, Trevor F, Rey, David M, Murphy, Sheila F
iopscience.iop.org
January 15, 2026 at 9:51 PM
🔥💧 New paper out in Environmental Research: Water led by Brian Ebel!
Synthesis shows how wildfires fundamentally shift hydrologic processes and streamflow generation—from infiltration and runoff to baseflow and flood response — post wildfire.
iopscience.iop.org/article/10.1...
Synthesis shows how wildfires fundamentally shift hydrologic processes and streamflow generation—from infiltration and runoff to baseflow and flood response — post wildfire.
iopscience.iop.org/article/10.1...
Amongst all of this, our students are still publishing excellent papers. My recent Masters student Annie Holt, now at NWS, shows how geologic age and (region-dependent) wetland fraction metrics can be used to improve our predictions of baseflow in watersheds across the U.S.: doi.org/10.1002/hyp....
New Predictors for Hydrologic Signatures: Wetlands and Geologic Age Across Continental Scales
This article contributes to the longstanding effort to use landscape metrics to predict streamflow dynamics. We introduce two new metrics describing wetlands and geologic age and use random forests t....
doi.org
February 20, 2025 at 2:51 AM
Amongst all of this, our students are still publishing excellent papers. My recent Masters student Annie Holt, now at NWS, shows how geologic age and (region-dependent) wetland fraction metrics can be used to improve our predictions of baseflow in watersheds across the U.S.: doi.org/10.1002/hyp....
Article:
Trends in hydroclimate extremes: how changes in winter affect water storage and baseflow
#research supported by Knut and Alice Wallenberg Foundation
#science #water #forest
tinyurl.com/2jpc39n5
Trends in hydroclimate extremes: how changes in winter affect water storage and baseflow
#research supported by Knut and Alice Wallenberg Foundation
#science #water #forest
tinyurl.com/2jpc39n5
Trends in hydroclimate extremes: how changes in winter affect water storage and baseflow
Abstract. Northern ecosystems are undergoing accelerated climate warming, with average temperature increases exceeding the global mean. In snow-dominated catchments, where cold-season conditions are e...
tinyurl.com
September 4, 2025 at 7:48 AM
Article:
Trends in hydroclimate extremes: how changes in winter affect water storage and baseflow
#research supported by Knut and Alice Wallenberg Foundation
#science #water #forest
tinyurl.com/2jpc39n5
Trends in hydroclimate extremes: how changes in winter affect water storage and baseflow
#research supported by Knut and Alice Wallenberg Foundation
#science #water #forest
tinyurl.com/2jpc39n5
#Periodic Variability #Baseflow in #Headwater #Streams of Upper #ColoradoRiver - #Implications #Runoff #Efficiency
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tinyurl.com/26a5fjss
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#GIS #spatial #mapping #water #hydrology #waterresources #USWest #Colorado #river #snowmelt #catchments #flow #model #geostatistics #planning #climateforcing
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tinyurl.com/26a5fjss
-
#GIS #spatial #mapping #water #hydrology #waterresources #USWest #Colorado #river #snowmelt #catchments #flow #model #geostatistics #planning #climateforcing
April 15, 2025 at 5:18 AM
Presumably infiltration rate due to grain size difference between the sand hills and the loess, eh? So much higher surface runoff in S. Loup, more groundwater baseflow in the N. Loup.
October 7, 2025 at 2:03 PM
Presumably infiltration rate due to grain size difference between the sand hills and the loess, eh? So much higher surface runoff in S. Loup, more groundwater baseflow in the N. Loup.
🚨 New in ES&T! @pubs.acs.org
Ion clusters in an urban stream reveal how salinization varies with hydrology. Storms, baseflow, and snowmelt each leave distinct chemical fingerprints.
A tool for targeting risk & smarter watershed policy: doi.org/10.1021/acs....
@diveredu.bsky.social
Ion clusters in an urban stream reveal how salinization varies with hydrology. Storms, baseflow, and snowmelt each leave distinct chemical fingerprints.
A tool for targeting risk & smarter watershed policy: doi.org/10.1021/acs....
@diveredu.bsky.social
Ion Clusters Reveal the Sources, Impacts, and Drivers of Freshwater Salinization
Population growth, land use change, climate change, and natural resource extraction are driving the salinization of freshwater resources worldwide. Reversing these trends will require data-centric app...
doi.org
June 16, 2025 at 11:31 PM
🚨 New in ES&T! @pubs.acs.org
Ion clusters in an urban stream reveal how salinization varies with hydrology. Storms, baseflow, and snowmelt each leave distinct chemical fingerprints.
A tool for targeting risk & smarter watershed policy: doi.org/10.1021/acs....
@diveredu.bsky.social
Ion clusters in an urban stream reveal how salinization varies with hydrology. Storms, baseflow, and snowmelt each leave distinct chemical fingerprints.
A tool for targeting risk & smarter watershed policy: doi.org/10.1021/acs....
@diveredu.bsky.social
A major issue is how to treat permafrost in the models because the modern extent of permafrost is not well constrained in some areas (signif. disagreement in obs. products) and how you treat it in models dramatically influences baseflow and peak flow. Source - my PhD is in arctic river deltas.
March 27, 2024 at 11:18 PM
A major issue is how to treat permafrost in the models because the modern extent of permafrost is not well constrained in some areas (signif. disagreement in obs. products) and how you treat it in models dramatically influences baseflow and peak flow. Source - my PhD is in arctic river deltas.
How do #carbon & #oxygen change during connected, disconnected, & intermediate flow stages of a non-perennial #stream? New #openaccess paper led by recent PhD grad Kristen Bretz & coauthored by #wundergrad alumna Natalie Murphy tackles this question: doi.org/10.1029/2022...
#WomeninSTEM #water 🌎 🧪
#WomeninSTEM #water 🌎 🧪
September 22, 2023 at 3:39 PM
How do #carbon & #oxygen change during connected, disconnected, & intermediate flow stages of a non-perennial #stream? New #openaccess paper led by recent PhD grad Kristen Bretz & coauthored by #wundergrad alumna Natalie Murphy tackles this question: doi.org/10.1029/2022...
#WomeninSTEM #water 🌎 🧪
#WomeninSTEM #water 🌎 🧪
5 years monitoring this wonderful #beaver release site in #Yorkshire! Pulling together a wide range of evidence, we saw changes in hydrology (reduced peaks/baseflow increase), reduction in turbidity, and increased vertebrate species richness and aquatic plant diversity 🦫👍https://tinyurl.com/bdd9k2ke
June 10, 2026 at 4:20 PM
5 years monitoring this wonderful #beaver release site in #Yorkshire! Pulling together a wide range of evidence, we saw changes in hydrology (reduced peaks/baseflow increase), reduction in turbidity, and increased vertebrate species richness and aquatic plant diversity 🦫👍https://tinyurl.com/bdd9k2ke
"Springs collectively supply the baseflow that sustains river systems through dry seasons and droughts — the water that keeps a river running when the rains are gone." | The Forgotten Frontlines of Freshwater Conservation springstewardship.substack.com/p/the-forgot...
The Forgotten Frontlines of Freshwater Conservation
Why Springs Are the Quiet Center of the Freshwater World
springstewardship.substack.com
June 25, 2026 at 11:28 PM
"Springs collectively supply the baseflow that sustains river systems through dry seasons and droughts — the water that keeps a river running when the rains are gone." | The Forgotten Frontlines of Freshwater Conservation springstewardship.substack.com/p/the-forgot...
Infiltration front measured and water balance computed. Thank you to all of the donors that helped us to raise $1400 during #H3SRechargeDay.
A special shout out to our Baseflow Contributors: VA Water Resources Research Center, Jean Bahr, Mike Cardiff, and
@sledford.bsky.social!
#AGU_H3S #AGU
A special shout out to our Baseflow Contributors: VA Water Resources Research Center, Jean Bahr, Mike Cardiff, and
@sledford.bsky.social!
#AGU_H3S #AGU
April 26, 2024 at 2:42 PM
Infiltration front measured and water balance computed. Thank you to all of the donors that helped us to raise $1400 during #H3SRechargeDay.
A special shout out to our Baseflow Contributors: VA Water Resources Research Center, Jean Bahr, Mike Cardiff, and
@sledford.bsky.social!
#AGU_H3S #AGU
A special shout out to our Baseflow Contributors: VA Water Resources Research Center, Jean Bahr, Mike Cardiff, and
@sledford.bsky.social!
#AGU_H3S #AGU
This makes sense. Moving the water quickly reduces the volume in storage in the soil and available to support baseflow, hence more severe stream droughts.
Agricultural tile drains, which are widely used across the Midwestern USA, are used to reduce waterlogging. In this new Env Res Letters article, Seth Adelsperger (IU PhD candidate) et al. show that they also increase the duration, frequency, and severity of streamflow drought. #climate #geosky 🧪
Agricultural tile drains increase the susceptibility of streams to longer and more intense streamflow droughts - IOPscience
Agricultural tile drains increase the susceptibility of streams to longer and more intense streamflow droughts, Seth Adelsperger, Darren Ficklin, Scott Robeson, Margaret Zimmer, John C Hammond, Damon M Hall, J.P. Gannon
iopscience.iop.org
September 13, 2024 at 10:22 AM
This makes sense. Moving the water quickly reduces the volume in storage in the soil and available to support baseflow, hence more severe stream droughts.
Here what’s the channel looks like at baseflow.
December 10, 2023 at 6:33 PM
Here what’s the channel looks like at baseflow.
(Less obviously, much the same happens with deep infiltration, and streamflow from that (i.e. baseflow, including karst through-flow). Most soil moisture is held by capillary suctions. Those don't break down, allowing deep infiltration to occur, until the soil moisture stores nearly fill.)
June 17, 2025 at 1:26 AM
(Less obviously, much the same happens with deep infiltration, and streamflow from that (i.e. baseflow, including karst through-flow). Most soil moisture is held by capillary suctions. Those don't break down, allowing deep infiltration to occur, until the soil moisture stores nearly fill.)