#watershed — Public Fediverse posts on home.social

LM Little @[email protected] · 2026-08-24 · 20:57 UTC

The bad behaviour of our #Alberta neighbours is hurting people in the #NWT. Whether it is abuse of our #watershed, #GHG #emissions, air #pollution, privatization of #healthcare that Northerners depend on, disregard for #IndigenousRights and title and NOW hurting people at a #musicfestival, this Northerner is so done with this friggin' neighbour. https://cabinradio.ca/306349/news/south-slave/fort-smith/rcmp-name-two-alberta-men-charged-over-fort-smith-shooting/

#pollution #healthcare #indigenousrights #musicfestival #alberta #nwt

💧🌏 Greg Cocks @[email protected] · 2026-08-18 · 03:01 UTC

Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California
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https://doi.org/10.1029/2026EA005227 <-- shared paper
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H/T @amy East, Ph.D., P.G. | Researcher integrating geoscience and climate-change preparedness
“[This paper (link above) is] a collaboration with [the H/T’s] colleagues from [the] USGS Landslide Hazards Program, who mapped over 8,900 landslides in the eastern San Francisco Bay Area during an extreme wet winter.
How much sediment does such an extreme winter produce, from landslides or in stream discharge? How does that compare with long-term sediment production and landscape denudation rates?
[They] f[o]nd that landslide sediment mobilization is comparable to long-term denudation rates, emphasizing the role of extreme events in long-term sediment production. However, one extreme wet year has a negligible effect toward counteracting ongoing problems of sediment deficit in San Francisco Bay: to keep pace with sea-level rise, extreme wet conditions would need to occur in 50 out of the next 75 years…”
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"PLAIN LANGUAGE SUMMARY: Watersheds will likely produce more sediment in a warmer future with more extreme rain, primarily through landslides in steep terrain. This study examines how an extremely wet season affected sediment production and transport in the eastern San Francisco Bay area, California. By mapping and measuring 8,928 landslides, [they] found that rare, extreme rain conditions are likely responsible for the vast majority of long-term hillslope erosion rates in this region. However, due to long residence times for sediment on hillslopes and in stream channels, a maximum of 1%–2% of that newly mobilized landslide material could have potentially contributed to sediment carried by streams into the Bay that year. Even extremely wet years cannot provide enough sediment for Bay wetlands and shorelines to keep pace with rising sea levels. To meet the demand for sediment in the Bay, such extreme rain and sediment production would need to occur in most years, which is not realistic. To restore wetlands and protect shorelines, managers likely will need to supplement the coastal system with repurposed dredged material…”
#massmovement #soil #water #hydrology #hydrography #geology #soils #geomorphometry #hydrogeomorphology #geomorphology #landslide #masswasting #climatechange #extremeweather #precipitation #rainfall #weather #climate #mapping #engineeringgeology #mapping #SanFrancisco #BayArea #USA #California #fedscience #fedservice #oublicgood #sediment #stream #discharge #extremewinter #sealevelrise #SLR #hillslope #erosion #sedimentation #tidal #wetlands #coast #coastline #shoreline #GIS #spatial #spatialanalysis #spatiotemporal #watershed
#USGS | #USGSLandslideHazardsProgram

#massmovement #soil #water #hydrology #hydrography #geology

💧🌏 Greg Cocks @[email protected] · 2026-07-02 · 01:32 UTC

Advancing Detailed Flood Hazard Identification in Alberta, Canada - Insights from Two Recent Flood Studies
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https://doi.org/10.3390/w18131592 <-- shared paper
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“The increasing frequency of floods and the severity of their consequences for public safety, infrastructure, and the economy demand improved methods for flood hazard identification. Flood studies that include flood hazard mapping are critical tools for informing emergency response and flood recovery, as well as for land use and mitigation planning. The methodology for such flood studies has evolved, and access to more powerful computational resources and high-resolution base data has contributed to the increased use of two-dimensional hydraulic modelling, where one-dimensional modelling previously was the default. However, local-scale flood studies face real-world constraints, including sparse data, challenging hydrologic conditions, and budget limitations, which can hinder the application of advanced techniques. This study addresses these challenges through innovative, practice-driven solutions in two case studies in Alberta, Canada: a small, partly channelised prairie stream network (Wolf Creek, Lacombe) and a laterally dynamic river on a distributary delta (Swan River, Kinuso). Three core components of flood hazard studies are described: field survey data collection, regional hydrology assessment, and hydraulic modelling. Key findings include demonstrating that LiDAR-derived terrain models alone cannot capture channel conveyance, the importance of low-flow calibration in the absence of high-water marks, the selection of a modelling methodology based on bathymetric and topographic features within a study area, and the development of inflow hydrographs for unsteady-state simulation in flat floodplains…”
#FloodMapping #FloodRisk #Hydrology #HydraulicModeling #HECRAS #WaterResources #Alberta #Resilience #RiverSurvey #spatialanlaysis #spatiotemporal #floodhazardmapping #HECRAS #model #modeling #remotesensing #LiDAR #bathymetry #floodfrequencyanalysis #unsteadysimulation #FHIMP #FHIP #WoldCreek #Lacombe #SwanRiver #Kinuso #Alberta #Canada #localscale #provincialfloodstudy # prairie #stream #river #flood #flooding #water #hydrology #risk #hazard #watershed #publicsafety #cost #damage #economics #infrastructure #use #practicedriven #floodhazard #survey #hydraulic #terrainmodels #hydrogeomorphology #topography #elevation #floodplain
@Alberta Environment and Protected Areas | @Government of Alberta | @Barr Engineering

#floodmapping #floodrisk #hydrology #hydraulicmodeling #hecras #waterresources

💧🌏 Greg Cocks @[email protected] · 2026-01-17 · 19:56 UTC

New Study Uncovers [Another Positive] Surprising Effect[s] Of Beavers' Dam-Building Behavior
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https://www.yahoo.com/news/articles/study-uncovers-surprising-effect-beavers-193000239.html <-- shared technical / media article
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https://doi.org/10.1111/1365-2656.70136 <-- shared paper
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https://www.smithsonianmag.com/smart-news/beavers-are-dam-good-for-biodiversity-bringing-bats-butterflies-and-other-critters-to-their-neighborhoods-180987717/ <-- shared technical article
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https://doi.org/10.1111/1365-2664.70193 <-- shared paper
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#water #surfacewater #groundwater #hydrology #natural #beaver #wildlife #habitat #ecosystem #streamflow #beaverdams #geomorphology #montane #landscape #landforms #basin #watershed #drainage #spatial #reservoir #biodiversity #bat #butterfly #pollinators #pollination #insects #arthropods #food #feeding #predation #trees #vegetation #switzerland #night #day #nightandday #sampling #remotesensing #diversity #deadwood #spatialanalysis #LiDAR #ecology #aquatic #terrestrial #ecosystemengineering #model #modeling #structuralequationmodel #SEM #species #foodsecurity #biology #wetland #butterfly #bee #hoverfly #moth

#water #surfacewater #groundwater #hydrology #natural #beaver

💧🌏 Greg Cocks @[email protected] · 2025-11-18 · 23:26 UTC

Geomorphic Factors Impact Groundwater Levels More Than Harvesting in a Coast Redwood Forest
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https://doi.org/10.1002/hyp.70302 <-- shared paper
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#water #hydrology #groundwater #stream #baseflow #plant #gegetation #transpiration #growingseason #forest #management #watershed #mediterraneanclimate #California #redwood #harvesting #soils #geomorphology #aquiferdepth #slope #randomforest #model #modeling #coast #coastal #rainfill #precipitation #infiltration
#USFS

#water #hydrology #groundwater #stream #baseflow #plant