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#hydrology

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Reading Material With Lunch, Etc – Getting Back To My Roots
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doi.org/10.4324/9780429270284 | Thornes, J. B., Brunsden, D. (1977). Geomorphology and time. London: Methuen
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I saw this book on another post - and so went and found a copy at a 2nd hand book shop…
Looking forward to lunches at work with a cup of tea and maybe a couple of rainy Sundays at home…
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#geomorphology #text #book #landforms #learning #refamiliarisation #readingforpleasure #framework #model #processes #geology #water #hydrology #weather #climate #erosion #time #spatialanalysis #spatiotemporal #temporal #qualitative #quantitative #change #stochastic #evolution

texasobserver.org/staying-aflo

>“We need to have a culture of efficiency in our state,” Walker said. There are plenty of ideas for conservation and reuse of water in the State Water Plan that need funding, she said, especially in smaller rural communities that don’t have as much technical expertise as larger cities and their utilities. “There’s a lot of good things we can be spending money on.”
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>While both the proposed legislation and the current state water plan acknowledge that Texas also needs to conserve water and fix existing water systems, so far leaders seem more focused on grander plans to build new infrastructure.

Until Texas bans lawn watering state-wide, we ain't fuckin' serious about the water crisis.

>These days, SAWS [San Antonio Water System]—which serves 2 million people in Bexar, Medina, and Atascosa counties—has nine different sources of water. The utility can now draw from four additional underground aquifers, its own recycled wastewater, and three reservoirs, including Medina Lake. But because of drought, San Antonio hasn’t used Medina Lake for years.
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>SAWS has invested instead in its “advanced storage and recovery” system as a better insurance policy. The utility doesn’t always use its full annual water rights from the Edwards Aquifer, especially during rainy times. So SAWS has turned to injecting extra Edwards water into a different rock formation directly below the H2Oaks Center, the Carrizo Aquifer, to use later during dry summers and droughts. Utility staff refer fondly to this reserve as “the bubble.”
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>All this water used in homes, businesses, and public buildings throughout San Antonio eventually flows from drains and toilets downhill to the city’s lowest elevation point, where SAWS has built its wastewater recycling plant. Here, trash—mostly “flushable” wipes that in reality are not at all flushable—gets screened out of the water, and the plant’s workers diligently cultivate microbes that eat the city’s biological waste.
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>At the end of this lengthy process, the treated water flows into the Medina River, just above where the Medina itself flows into the larger San Antonio River. The water entering the river looks clean, like a small waterfall more than anything. Trees surround the wastewater plant’s outfall, the air smells fresh, and birds fly by.
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>“You should take us for granted,” said SAWS CEO Robert Puente, who previously served in the Texas Legislature and chaired the House Natural Resources Committee, in an interview with the Observer. The utility has plenty of water for at least the next decade, and longer if San Antonio’s recent population growth levels out, he said.

Excellent! So we already have a model for what every other city needs to be doing.

#water #hydrology #texas #drought #Municipal #utilities #SanAntonio #TexasObserver @TexasObserver

The Texas Observer · The Medina And San Antonio Rivers Are Drying UpLessons for the future of Texas water

One month left to provide feedback on our preprint "Rainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, Australia."

We are keen for some constructive feedback to improve the paper :)

egusphere.copernicus.org/prepr

#hydrology #KarstHydrology #Groundwater #preprint

@Andbaker

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.

There's only one month left for open comments on our current preprint, which looks at rainfall recharge thresholds before and after a fire.

We are very interested to get some community input! If you are interested in #groundwater #waterResources #karstHydrology #hydrology, please check it out.

egusphere.copernicus.org/prepr

@Andbaker

egusphere.copernicus.orgRainfall recharge thresholds decrease after an intense fire over a near-surface cave at Wombeyan, AustraliaAbstract. Quantifying the amount of rainfall needed to generate groundwater recharge is important for the sustainable management of groundwater resources. Here, we quantify rainfall recharge thresholds using drip loggers situated in a near-surface cave: Wildman’s cave at Wombeyan, southeast Australia. In just over two years of monitoring, 42 potential recharge events were identified in the cave, approximately 4 m below land surface which comprises a 30° slope with 37 % bare rock. Recharge events occurred within 48 hours of rainfall. Using daily precipitation data, the median 48 h rainfall needed to generate recharge was 19.8 mm, without clear seasonal variability. An intense experimental fire experiment was conducted 18 months into the monitoring period: the median 48 h rainfall needed to generate recharge was 22.1 mm before the fire (n=22) and 16.4 mm after the fire (n=20), with the decrease in rainfall recharge most noticeable starting three months after the fire.. Rainfall recharge thresholds and number of potential recharge events at Wildman’s Cave are consistent with those published from other caves in water-limited Australia. At Wildman’s Cave, we infer that soil water storage, combined with the generation of overland flow over bare limestone surfaces is the pathway for water movement to the subsurface via fractures and that these determine the rainfall recharge threshold. Immediately after the fire, surface ash deposits initially retard overland flow, and after ash removal from the land surface, soil loss and damage decrease the available soil water storage capacity, leading to more efficient infiltration and a decreased rainfall recharge threshold.

Fluvial System Block Diagrams
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I was looking to understand a fluvial system the other day, up in the high Arctic, as I looked at 3DEP remote sensed elevation data… I have always been fascinated by the how geology, water, weather shapes a landscape, including erosion (aka geomorphology if you will) – and realized how very much value fluvial block diagrams have as we try to conceptualise what has, is and will happen(ed.)
#spatial #spatiotemporal #morphology #meander #levee #understanding #oxbow #pointbar #river #water #hydrology #landform #geomorphology #geomorphometry #geology #fluvial #riverine #weather #climate #erosion #sediment #sedimentation #Arctic #3dep #opendata #DEM #BeringSea #northslope #opendata #fedservice

NASA’s New Satellite Could Change the Way We Farm Forever
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scitechdaily.com/nasas-new-sat <-- shared technical article
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nisar.jpl.nasa.gov/ <-- shared NISCAR page
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youtu.be/ONHTazfGoiM?si=y2n0ab <-- shared overview video
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Precision Agriculture at Scale | Mapping Crops with Advanced Radar | Cutting-Edge Techniques for Crop Identification | Enhancing Crop Forecasts with NISAR Data | Tracking Soil Moisture for Smarter Farming
#GIS #spatial #mapping #farming #agriculture #farmingintelligence #spatialanalysis #spatiotemporal #fedscience #satellite #earthobservation #remotesensing #policy #planning #management #efficiency #radar #planting #irrigation #waterresources #tools #resources #economics #costs #moisture #crops #AI #machinelearning #water #hydrology #NISAR
@nasa | @ISRO | @JPL

Hydrography (Oceanography 🌊)

Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security an...

en.wikipedia.org/wiki/Hydrogra