#floodrisk — Public Fediverse posts on home.social

💧🌏 Greg Cocks @[email protected] · 2026-08-07 · 04:46 UTC

Coastal Flooding At Predictable Hours
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https://doi.org/10.1038/s41467-026-75710-5 <-- shared paper
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H/T @bruna Alves | Nature Communications | Editor
“When do coastal floods happen? ⏱️🌊
A new study [link above] shows that, in many tide-dominated coastal regions, flooding tends to occur at specific and recurring times of day. Rather than being completely random, flood events often cluster around predictable hours driven by local tidal patterns.
By analysing coastal flood observations from the UK and the US, [the authors] show[ed] that the timing of flood events can be highly structured, with some locations experiencing floods disproportionately during certain parts of the day.
This adds a temporal dimension to coastal flood risk. We often focus on how frequently floods occur, how severe they are, and where they happen. This study highlights that when they occur may also matter, particularly as rising sea levels increase the frequency of coastal flooding.
The findings provide a useful perspective for coastal adaptation, risk communication, and emergency planning…”
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“Flooding is typically perceived as a sudden and unpredictable hazard. Here, [they] show that recurrent flooding can occur at highly predictable times in tidally dominated coastal systems. This predictability stems from phase-locking of tidal constituents and constituent pairs with the solar day, causing peak tides to recur at consistent local times set by regional tidal propagation. Using tide-gauge records from the United States and the United Kingdom, [they] quantif[ied] the intraday timing of coastal flood events and show strong clustering at specific hours, particularly where semidiurnal or mixed tides dominate. For example, floods in Boston cluster around noon and midnight, whereas in southern California they occur in the morning. Sites with stronger non-tidal variability show weaker clustering. This temporal predictability extends beyond nuisance flooding to larger consequential events involving inundation, road closures and infrastructural damage, highlighting opportunities for anticipatory risk communication, emergency planning and time-sensitive coastal adaptation…”
#coast #coastal #flood #flooding #spatialanalysis #spatiotemporal #time #statistics #geostatistics #tide #tidal #timing #temporal #floodrisk #risk #hazard #sealevel #sealevelrise #climatechange #emergency #planning #tideguage #UK #USA #innundation #infrastructure #transportation #riskcommunication

#coast #coastal #flood #flooding #spatialanalysis #spatiotemporal

💧🌏 Greg Cocks @[email protected] · 2026-07-30 · 04:47 UTC

Coupled Hydrological And Public Health Risks From Urban Flooding - Integrated Remote Sensing, Machine Learning, And Hydrodynamic–Ecological Modelling
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https://doi.org/10.1016/j.jhydrol.2026.135999 <-- shared paper
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https://youtu.be/VHzYLvSYR7k?si=5oGGPeH6T0dFusfY <-- recent overview video created about the research
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https://doi.org/10.1016/j.wroa.2025.100396 <-- share (earlier) paper
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H/T @RAHUL DEOPA | Research Scholar (IIT Roorkee)
“… [U]rban floods are not merely hydraulic events; they also transport sewage, pathogens, and other contaminants across streets and communities, leading to significant public health risks…
How do we quantify microbial contamination in near real time during a flood event, when emergency conditions make field sampling unsafe, sparse, or even impossible?...
[The authors] explored whether Earth observation data, combined with machine learning, could bridge this critical monitoring gap. By combining Landsat-derived water surface temperature, machine learning, a coupled MIKE+ Flood–ECO Lab hydrodynamic–ecological model, and Quantitative Microbial Risk Assessment (QMRA), [they] estimated microbial concentrations (𝘌. 𝘤𝘰𝘭𝘪), simulated their fate and transport during floods, and quantified the associated human health risks.
The takeaway: predicting flood risk isn't just about where the water goes; it's about what it's carrying and who it puts in harm's way. Earth observation and machine learning can help close that gap when it matters most, during the emergency, not weeks after…”
#publichealth #risk #hazard #watersecurity #Floodrisk #Humanhealthrisk #Urbanflooding #Hydrodynamicmodelling #waterquality #model #modeling #SupportVectorRegression #flood #flooding #urban #city #sewage #pathogens #contaminant #disease #streets #community #quantification #remotesensing #GIS #spatial #mapping #earthobservation #spatialanalysis #water #hydrology #climatechange #extremeweather #spatiotemporal #AI #machineleraning #fateandtransport #hydrodynamic #microbial #rainfall #drainage #streamflow #topography #hydrogeomorphology #Delhi #India #floodplain

#publichealth #risk #hazard #watersecurity #floodrisk #humanhealthrisk

💧🌏 Greg Cocks @[email protected] · 2026-07-28 · 05:07 UTC

Busy Beavers - The Turbidity Signature Of Ecosystem Engineers At Work
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https://doi.org/10.1002/hyp.70661 <-- shared paper
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H/T @alan Puttock
“Beavers are the quintessential ecosystem engineers. In slow-flowing streams, they create complex wetlands with ponds by building dams and canals that can positively impact biodiversity, hydrology and water quality. These activities can interchangeably capture or release sediment along the watercourse. To date this has not been quantified at the resolution of rainfall events or beaver activity. This study used 15-min frequency, sustained monitoring upstream and downstream of a newly establishing beaver wetland to measure episodic changes in water turbidity at an event resolution. Monitoring showed no significant differences between upstream and downstream turbidity over 160 days when the first pair of beavers, known not to be building dams or canals, were resident. Shortly after introduction of another beaver pair, however, dam building, burrows and canal excavations were quickly observed, resulting in the creation of a complex beaver wetland between 2021 and 2024. Monitoring over 375 days during this period showed significant differences. Downstream turbidity was significantly higher overall than upstream: 13.1 Nephelometric Turbidity Units (NTU) compared to 4.2 NTU. Stochastic spikes in downstream turbidity during the study period not recorded upstream were associated with dam building and burrowing. Overall, there was no significant difference in turbidity loads, which was at least partially explained by a reduction in discharge downstream, particularly in higher flows, during the dam building period. This demonstrates a complex system with the trapping of influent sediment, the storing of water and the periodic release of beaver wetland sediment leading to net balance in loads. These results help provide context for other studies which have used temporally discrete sampling campaigns rather than continuous high-frequency monitoring. They provide a unique insight into the downstream impacts of a rapidly developing beaver wetland over its first three and a half years in a landscape that hasn't had beavers for over 400 years…"
#hydromorphic #water #hydrology #dam #beaverdam #waterquality #biodiversity #ecology #benefits #NatureBasedSolutions #Wetlands #Ecology #Biodiversity #EnvironmentalScience #Wildlife #Ecosystem #bioviversity #conservation #restoration #landscaperecovery #floodmanagement #FloodMitigation #flooding #energy #floodrisk #sustainability #wetlands #hydrography #dams #impoundment #deadwood #waterresources #landscapeengineer #benefits #vegetation #ecology #ecosystem #riversystemsstabilisation #naturalwaterregulation #resilience #valleysreborn #fisheries #invertebrates #extremeweather #floodflows #sediment #baseflow #drought #landmanagement #naturalsystems #landuse #monitoring #spatialanalysis #spatiotemporal

#hydromorphic #water #hydrology #dam #beaverdam #waterquality

Australia News Beep @[email protected] · 2026-07-25 · 07:20 UTC

Two-Thirds of Global Mining Facilities Face Significant Water Risk, ICMM Warns

Nearly two-thirds of the world’s mining and metals facilities are exposed to at least one significant physical water…
#NewsBeep #News #Environment #AU #Australia #CentralIndia #criticalminerals #Drought #energytransition #floodrisk #ICMM #Miningandmetals #Science #waterrisk. #waterstress
https://www.newsbeep.com/au/822503/

#newsbeep #news #environment #au #australia #centralindia

United Kingdom News Beep @[email protected] · 2026-07-25 · 06:40 UTC

Two-Thirds of Global Mining Facilities Face Significant Water Risk, ICMM Warns

Nearly two-thirds of the world’s mining and metals facilities are exposed to at least one significant physical water…
#NewsBeep #News #Environment #CentralIndia #criticalminerals #drought #energytransition #environment #floodrisk #ICMM #Miningandmetals #Science #UK #UnitedKingdom #waterrisk. #waterstress
https://www.newsbeep.com/uk/710043/

#news #environment #centralindia #criticalminerals #drought #energytransition

💧🌏 Greg Cocks @[email protected] · 2026-07-14 · 03:00 UTC

Eager Beavers - Rodents Engineer Czech Wetland Project After Years Of Human Delay [ecosystem engineers]
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https://www.theguardian.com/world/2025/feb/11/beavers-save-czech-taxpayers-by-flooding-ex-army-training-site <-- shared technical media article
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https://en.wikipedia.org/wiki/Beaver-engineered_dam_in_the_Czech_Republic <-- shared wiki technical page
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https://phys.org/news/2025-02-fine-beavers-czech-treasury-million.html <-- shared technical article
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https://youtu.be/GSTw8qmBP4Y?si=XK2Iy2pAltW91flj <-- shared video (Czech)
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H/T @ScienceGirl
"We don't expect any conflict with the beaver in the next 10 years," ~ Bohumil Fiser from the Czech Nature Conservation Agency
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“For seven years, planners struggled to complete a $1.2 million wetland restoration project in the Brdy region of the Czech Republic. The goal was to build a dam that would improve water management and bring back valuable wetland habitat, but the project remained trapped in a maze of permits and approvals.
Then a family of eight Eurasian beavers did what engineers had planned… without permits, machinery, or a budget.
The beavers built a network of dams in almost the exact area chosen for the proposed project, naturally restoring the wetland system officials had spent years trying to create. After seeing the results, authorities decided there was little point continuing with the original human-built dam.
Although some reports suggested the beavers completed the work overnight, experts say their construction likely took several weeks. The reason it seemed sudden is that the animals quietly worked away until their finished dams became impossible to miss.
Beavers are known as “ecosystem engineers” because their behaviour can reshape entire environments. By cutting trees and blocking streams, they create ponds and wetlands that support countless species, including fish, amphibians, insects, birds, and mammals.
Their wetlands also act as natural water reservoirs, helping during droughts, reducing flood risks, filtering water, storing carbon, and keeping landscapes wetter during wildfires…
Once heavily hunted across Europe, beaver populations have been recovering thanks to conservation efforts, proving that sometimes nature can solve problems humans spend years trying to fix…"
#water #hydrology #KlabavaRiver #Czech #BrdyRegion #protected #CzechRepublic #armytraining #military #beaver #Eurasianbeavers #dam #beaverdam #waterquality #restoration #biodiversity #crayfish #wetland #ecology #benefits #Beavers #NatureBasedSolutions #Wetlands #Ecology #Biodiversity #Agroforestry #EnvironmentalScience #Conservation #Wildlife #Ecosystem #bioviversity #conservation #restoration #landscaperecovery #EcosystemEngineers #nature #floodmanagement #FloodMitigation #flood #flooding #energy #floodrisk #sustainability #wetlands #hydrography #dams #impoundment #deadwood #waterresources #landscapeengineer #agriculture #benefits #vegetation #ecology #ecosystem #riversystemsstabilisation #naturalwaterregulation #resilience #drought #wildfire #valleysreborn #slowdetermination #fisheries #invertebrates #extremeweather #floodflows #sediment #baseflow #drought #landmanagement #naturalsystems #landuse #ecosystemengineers #watermanagement

#water #hydrology #klabavariver #czech #brdyregion #protected

DoomsdaysCW @[email protected] · 2026-07-12 · 21:20 UTC

#WaterburyCT receives $339K DEEP grant for #RisdonDam removal project

By Dalton Zbierski, 7/4/2026

"A vision in Waterbury is en route to becoming reality, as the city received a grant from the state this week to help kickstart the Risdon #DamRemoval Project on South Main Street.

"The $339,000 Long Island Sound Ecosystems Grant from the Connecticut Department of Energy and Environmental Protection will fund an important early stage of the project to remove the aging Risdon Dam.

"The grant will cover the environmental investigation, engineering design and permitting required for the removal of the dam, which is located behind the former factory at 2100 South Main St.

"A release this week from the city announced the award from DEEP and explained the purpose of the project.

"Removing the dam will restore the natural flow of #HopevillePondBrook, a tributary of the #NaugatuckRiver within the #LongIslandSound #watershed.

"The project aims to improve #AquaticHabitat, reconnect #StreamCorridors, reduce #FloodRisk and eliminate a deteriorating structure that poses safety risks for nearby properties and infrastructure, according to city officials.

"It will take approximately one year to complete the planning, design and permitting phase. Then, the construction will move on to bidding.

"On Wednesday, Waterbury Mayor Paul Pernerewski, Jr. said the grant represents another significant investment in the city’s infrastructure and #EnvironmentalStewardship.

" 'Removing the Risdon Dam will improve the health of Hopeville Pond Brook, reduce flood risks and help restore a more resilient #ecosystem for #FutureGenerations,' Pernerewski said.

"The mayor also thanked #DEEP for its support and collaboration in helping the project move forward.

"DEEP Commissioner #KatieDykes, who will be leaving her position this month, said the project marks the state’s commitment to protecting and ensuring the health and perseverance of its waterways and the Long Island Sound Watershed.

" 'Supporting the planning, engineering and design needed to move this project toward construction will help advance future improvements to #StreamConnectivity, aquatic habitat and #FloodResilience,' Dykes said.

"The funding was made available to DEEP through the U.S. Environmental Protection Agency’s Long Island Sound Partnership National Estuary Program."

Source:
https://www.fox61.com/article/news/local/new-haven-county/waterbury/waterbury-receives-339k-deep-grant-risdon-dam-removal-project/520-f87d4833-16c8-4bc5-bd95-c8224803622d

#SolarPunkSunday #RestoreFloodplains #BuildingForResiliency #FloodplainReclamation #Connecticut #DamRemoval #Floodplain #Watersheds #RiverRestoration