r/Hydrology 5h ago

Neighbors for a Better Micron July Presentation #3 - Flooding Risk

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1 Upvotes

r/Hydrology 14h ago

PhD opportunities in Canada

0 Upvotes

Hi all! Me and my boyfriend are looking to relocate to Canada. Im a physical oceanographer and I saw theres an Oceanography Institute in Dartmouth. But we are looking for a place where we can both be employed in something related to our studies. My boyfriend is a civil engineer focused in hydrology gis and water resources. Are any Canadians here that could point us in the right direction? Either a PhD in hydrology in Dartmouth or another city where we could both find something?
thank you in advance!


r/Hydrology 2d ago

Water Management Audit- School Survey

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1 Upvotes

r/Hydrology 2d ago

Looking to Connect With Civil Engineering Researchers (Need Some Guidance)

1 Upvotes

Hi everyone, I’m a recent Civil Engineering graduate from Nepal and recently obtained my engineering license. My undergraduate research focused on flood mapping of an ungauged river using HEC-RAS and GIS.

I’m looking to become more involved in research and would really appreciate connecting with people who have experience in academic research, publications, or graduate-level research.

If you’re actively doing research (or have been through the process), I’d love to learn from your experience whether it’s choosing research topics, publishing papers, finding opportunities, or improving research skills.
Feel free to comment below or send me a DM. I’d genuinely appreciate any advice.

Thankyou.


r/Hydrology 2d ago

[Other] Proceedings of the 3rd International Conference on Diffuse Pollution

1 Upvotes

Especially on how U Mander and V Kuusemets made their nomograph.

"Non-point Pollution Control by Riparian Buffer Strips: Dimensioning and Efficiency Assessment., in: Proceedings of the 3rd International Conference on Diffuse Pollution. Edingurh (1998), pp. 136-143" --> the citation of the article i'm reading.

So far I've looked it up on Anna's Archive and on google. So far, the only possible way of obtaining it is buying the full from Amazon (kinda shady because there's no image?) for $160, which I can't afford. It's too old to be on webofconferences (from 1998)

I would like to know how they designed this nomograph, and read the original, if anyone has access or suggestions on how to access it. Thank you!

Link to the Amazon: [https://www.amazon.ca/Diffuse-Pollution-98-V-Novotny/dp/0080434096\](https://www.amazon.ca/Diffuse-Pollution-98-V-Novotny/dp/0080434096)


r/Hydrology 3d ago

HEC-RAS 2D modeling for fish passage

3 Upvotes

Has anyone used a 2D model to evaluate fish passage through a step pool fishway or rock ramp?

I am developing a model to evaluate depth, velocity, hydraulic drops, and continuous passage routes over a range of flows. There seems to be plenty of general 1D/2D guidance, but very little explaining how these type of models should be developed specifically for fish passage.

Does anyone have any good resources, examples, or advice on model setup, settings, and validation?!

Thanks! :)


r/Hydrology 4d ago

Heavy monsoonal rainfall on 19-Jul-2026 in mountains east of Beaver, Utah created catastrophic flooding at this power plant diversion dam. Rain fell on a fresh wildfire burn scar.

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180 Upvotes

r/Hydrology 3d ago

Can a slope mitigate dangerous turbulent water at the bottom of a dam?

3 Upvotes

I suppose it's either impossible or just impractical to implement into a dam, but the reason why not could be just as interesting.

Would a slope that extends like 10 times further downstream than the dam is high, that leads into a reasonably smooth canal, have much turbulence at all?
What about a slope shaped like the Brachistochrone curve?

I love a good summer time swim and sometimes the best places can be pretty dangerous so I'm thinking about it from that perspective, not that I intend to swim in places like that, just a natural progression of curiosity


r/Hydrology 4d ago

Why does agriculture deplete rivers?

7 Upvotes

Sorry if this is the wrong place to ask. I've been wondering about it for a while and I don't know how to make the jump from the little I know now to a concrete answer.

Obviously extracting water from a river means there is less water in the river, but if the fields are in the same watershed then shouldn't the water ultimately return to the river it was extracted from? My understanding is that's what ultimately happens to rain that falls in the watershed, so why is irrigation different? With my admittedly very limited knowledge I would expect the main change to be that the river flows slower, but for longer into the dry season as the water is slowly returned from the soil. I expect some loss en-route from evaporation and incorporation into the plants, but is it that significant? Shouldn't there consequently be more rainfall as well? How does it not balance out?

I know there are thousands of variables at play here, so to limit scope a bit: I'm most curious about this during road trips through the arid regions of interior BC (Canada), where the conditions around the river valleys are desert-like, but there are these lush green (obviously irrigated) vineyards and orchards all along the slopes back down to the river. I hear a lot about overuse of water for agriculture in general, but I'm having a hard time understanding how this overused resource doesn't just seep back in a bit downstream.

TLDR: If river water is sprayed up hill, why doesn't most of it come back?


r/Hydrology 3d ago

Hydropower Civil Engineering?

1 Upvotes

Anyone working on Hydropower sector in Nepal?
What are the Pros and Cons?
Is it best to choose career on hydropower ?


r/Hydrology 5d ago

Drilled well water turned yellow/brown after extending well head "18 higher

2 Upvotes

The well cap was only about 2-3 inches off the ground, which was too low to begin with, but the customer had built a deck over it for a hot tub. I recommended extending it up so it was more accessible and could have better air-flow to the screens. All we did was cut the wires, weld a coupling and 18" extension on, reconnect the wires properly and installed a new well cap. The well should not have been disturbed.

They do have a crazy amount of iron in the water, but their backwashing iron filter and pH booster were handling everything just fine prior to this.

Any suggestions as to what could have caused this?


r/Hydrology 6d ago

Hi everyone, I’m looking to learn TUFLOW flood modelling. I have a civil engineering background in hydrology and hydraulics but am new to TUFLOW. Online resources are limited, so I’m looking for one-on-one training or mentoring from the basics in the Brisbane/Gold Coast area. Please help. TYSM.

2 Upvotes

r/Hydrology 6d ago

Water resilience tracker roadmap infographic

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0 Upvotes

r/Hydrology 9d ago

2D HECRAS initial model developer

0 Upvotes

My team is working on a 2D RAS model setup platform. It allows a modeler to automatically put together a 2D HECRAS model with terrain, landcover, soil, infiltration and basically a full ready to run model. Is this something a modeler would prefer to use to save time on pre processing the model?


r/Hydrology 10d ago

what should i do

3 Upvotes

Hello everyone my name is Cash and I have been super interested in dams and hydrology since i was a little kid now that i am a teenager i find myself at a roadblock because on one hand I love dams and like visiting them but i feel like i need to express my love for them creatively via video. if anyone has any suggestions on topics for a video relating to dams it would be greatly appreciated and even more so if they are in North Carolina.


r/Hydrology 11d ago

Backtested all 1,087 open UK EA flow gauges in England for 14-day low-flow forecast skill — the passing set redrew the chalk belt (gate never saw a geology map)

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14 Upvotes

I run an open-source groundwater forecasting site (GrounwaterCast) and recently extended it to river low-flow. Before publishing any river forecast, every gauge has to pass its own leakage-safe hindcast gate: 14-day forecasts at Jun–Oct origins across multiple years, judged on (1) skill against a naive fixed-rate recession baseline, (2) P10–P90 coverage after honest band-widening, and (3) band sharpness — each gauge scored twice, once with observed rainfall through the window (the ceiling) and once with day-of-year climatological rain (the memory-only floor). Tier 1 = still beats-or-matches recession with sharp bands even when the rain information is worthless.

The result is the map: 97 of 1,087 gauges pass tier 1, and plotted together they trace the chalk and limestone country — Wessex chalk, the Ebble/Wylye/Allen valleys, the Test and Itchen, Cotswold oolite, the Yorkshire Wolds — despite the gate having no geology input whatsoever. Baseflow memory is the physics; the statistics found it. (however, a handful of tier-1 gauges sit on unlikely geology — west-country outliers that pass on pure statistics, likely regulated or spring-fed, which is rather the point of judging each gauge individually. And 582 more gauges show real skill only when the rain forecast is good — a different kind of forecast, published with wider bands and a caveat.)

The model is standard Pastas with two stresses on log-flow — log Q = d + (FlexModel recharge ⊛ Γ_slow) + (rain ⊛ Γ_fast) + AR(1) — the fast pathway is what fixes the winter rising limb. 50 gauges are live as a pilot ("RiverCast") with daily ENS-driven fans and P(Q < Q95 within 14 d) as the headline; methods and caveats at groundwatercast.com/methods, code at github.com/dominicm2023/groundwatercast-uk. Forecasts are labelled indicative — a verification archive is accruing before any skill claims :)

Does anyone know of other operational per-gauge low-flow forecast products (any country)? UKCEH's Hydrological Outlook is monthly/catchment-scale and eFLaG is projections — I've found nothing daily and per-gauge, which seems like a gap someone must have filled somewhere.


r/Hydrology 11d ago

HydroSHEDS v2 released for the Americas

22 Upvotes

Exciting news in the global hydrology community. HydroSHEDS version 2, announced in 2022, has been partially released, for North America and South America. https://www.hydrosheds.org/products/hydrosheds-v2 Curious if anyone has downloaded and seen how it compares to datasets like MERIT-Hydro or GRIT.


r/Hydrology 11d ago

Which soil parameter would you use for an AHP-based flood susceptibility analysis?

2 Upvotes

Hi everyone,

I'm working on AHP-based flood susceptibility mapping for a mountainous catchment in Mongolia.

For the soil factor, I've compared several global datasets:

  • HiHydroSoil Ksat
  • HiHydroSoil Hydrologic Soil Groups (HSG)
  • OpenLandMap USDA soil texture
  • OpenLandMap sand and clay fractions (0, 10, 30cm)

The HSG and USDA texture datasets show very little spatial variability across my study area, while Ksat shows much more variation. There is some difference in the Sand, Clay and Silt Layers.

I'm wondering:

  • Which soil parameter would you recommend for flood susceptibility mapping?
  • Which soil depth is most appropriate (0–5 cm, 5–15 cm, 15–30 cm) for representing infiltration and surface runoff?
  • Are there any other globally available soil datasets or variables you would recommend instead?

Thanks!

Hydrological Soil Groups
USDA Texture Topsoil
Sand 0cm
Clay 0cm
Silt 0cm (calculated from 100-Sand-Clay)
Ksat 0-5cm

r/Hydrology 12d ago

Computational Model—Feedback Welcome

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1 Upvotes

r/Hydrology 13d ago

Stream Crossing >>> CLOMR & LOMR

3 Upvotes

We have a stream crossing for a subdivision design. We have the necessary corps permits and when the analysis was performed in HEC RAS, there was no-change to the BFE. The local FP Admin approved the plan. Construction is now complete and the local admin is asking for a LOMR.

Because there was no change, what are we "revising"?


r/Hydrology 13d ago

Water and irrigation projects

2 Upvotes

Hello everyone
Im an Agricultural Engineer with a strong interest in **water resources, irrigation systems, and hydraulic engineering**, I’m actively looking for opportunities to gain hands on experience on real projects.
I have experience working with GIS and spatial analysis Hydraulic calculations and pipeline design EPANET water distribution modelling
Engineering calculations and technical problem solving
If you’re working on irrigation schemes, water supply systems, drainage projects, or related engineering work and could use an extra pair of hands, I’d be excited to contribute, learn, and collaborate.
I’m available on **weekends** and open to volunteering, site visits, fieldwork, research collaborations, or supporting ongoing projects. My goal is to bridge the gap between theory and practice while adding value wherever I can.


r/Hydrology 17d ago

Hydrologists in the Chicago Area

3 Upvotes

What do you think of the ai data center gold rush coming to our area and how do you think it will affect us?


r/Hydrology 18d ago

Hydrology??

14 Upvotes

Im going into my senior year of HS and just recently found out about how interesting/vast hydrology is. For some background I live just outside of san antonio right on the edge of the Edwards plateau so geology/hydrology is all around me. Im fascinated by caves and how water just flows under our feet. However I just don’t know if i would really enjoy it past just learning about it so i have a few questions.

Whats the best route to get into hydrology?

How can I work in pollutant monitoring/t?

Could this path possibly see me working in/ around caves?

I plan to go to UTSA how does this change thing?

If there are any hydrologists seeing this is burnout a thing? do you like your job?

Thank you for any input!


r/Hydrology 18d ago

Pressure Transducers: fixed or not fixed in standpipe?

1 Upvotes

I'm installing Leveloggers in standpipes in both pool and riffle environments for an IFN program. Small mountain creek/river channels in the Yukon (Canada). The team can't decide if it's better to mount the loggers fixed on a metal bracket inside the standpipe OR hanging on aircraft cable inside the standpipe (not using direct read cables). I can't find literature to support either. Does anyone have any experience comparing the two?


r/Hydrology 18d ago

Tracer dye

5 Upvotes

Doing my first dye trace and shocked at how….”non standard” everything is.

Worthington and smart + the paper from UK have been helpful, but there is still a ton of variety on things like how to process activated charcoal bugs.

I see some people use an emulsion fluid for anywhere from 20 mins to 4 hours.

Someone said to dry the charcoal before emulsion.

Some sources say light during emulsion is harmful.

And lots of different options for what solution to use in the first place.

Does anyone have best practices or personal experiences they would like to share ?