What are the details that need to include for a detention tank placement and simulation for post development state in HEC HMS?

I'm currently working on a NZ project. How can i get the rainfall data for that particular development area?

Hi everyone!

I have some hopefully not stupid questions about how river systems function. I've been trying to study them as a bit of a special interest for the past two years, but there are a few things that I can't quite seem to find answers on.

1. Suppose a river basin has many tributaries along its length. Is it possible, for example, for the top of the river to dry up while the lower river continues to flow IF, for whatever reason, the water sources for the upstream tributaries dry up (e.g. if the river is predominantly driven by rainwater, and rainfall doesn't occur upstream while it does occur downstream).

2. If sewerage drains into a river system, how does the river system downstream maintain cleanliness? For example, if a sewerage system is emptying into a river, is the entirety of the downstream river unsafe for usage / consumption?

Thanks in advance!

Hi!

I am looking to apply for graduate school this coming fall (MS, with the possibility of PhD down the line) for hydrology, specifically using modeling tools to assess the impact of climate change on water resources. I know that might be a broad topic, but I'm hoping an MS will allow me to narrow my interests a bit.

I live in the Boulder area, and I found CU Boulder's Hydrology, Water Resources, and EFM subtrack within the Civil Engineering department. There are some PIs that really appeal to me in terms of research fit. I am wondering what the reputation of this program is? I would love to stay in the Boulder area if it works out.

(Continued) and file size and resolution. I have also tried HEC-HMS v-4.11 and v-4.12 Beta. Any suggestions?

https://preview.redd.it/uabae1zri3rc1.jpg?width=1082&format=pjpg&auto=webp&s=40b91374ab2ea7b6e110c45b17a20ac3fbf061b3

Can anyone help me find the Newfoundland and Labrador Digital Water Well Database? I’m not sure if it still exists online.

I’m familiar with the NL Water Resources Map and the Groundwater Information Network but haven’t found the water well database. Specifically I’m looking for average groundwater levels in the area of Manuels, Conception Bay South, NL

Hi! I am a recent PhD graduate who focused on coastal oceanography and hydrology (estuaries etc) in California. I just finished up my dissertation and am imminently moving to the north east US to be able to support family members. I feel out of my depth/uncalibrated though with east coast systems! Does anyone have any resources such as courses or textbooks that are largely contextualized in the east coast so I can recalibrate and brush up? Thank you!

I was wondering if anyone can recommend a good comprehensive resource to learn HEC-RAS? I found a few playlists on youtube, but im wondering which ones are best for beginners learning the basics. I had an introduction to it in university but it was almost 10 years ago.

Also looking for recommendations for HEC-HMS and ArcGIS.

Thanks.

I have experience in autocad\civil3D for civil works drawings and I am in the process of making a transition to hydrology. I would like to know:

1. Practical examples of how python can help me work more efficiently
2. If python is worth learning

Hello everyone, I am trying to create a simple model using the HEC-HMS to obtain the value of runoff volume and peak discharge for a river basin. The problem is I do not know which method (transform, loss, routing, baseflow, type of precipitation) should I utilize. Please suggest a suitable and simple model to run in HEC-HMS to get my desired data. Currently, the data that I have are precipitation data, stream flow data, terrain data, curve number, and LULC data.

I currently just use it for groundwater elevation contouring and iso-concentration maps for groundwater plumes. It seems super versatile though and I’m curious what others are using it for.

I am looking to buy a house in LA Crosse, Wisconsin. There is a house I really like that is right next to a weird boundaried floodplain on FEMA's website. It is pretty far away from the Mississippi River, but is near some bluffs which could have run off from storms. Should I be really worried about the location? What questions should I ask and to whom? The pin in the attached pictuee is the house I am looking at. Thanks!

I am interested in doing an undergrad research about evaluation of groundwater recharge for a certain area. Can you help how to pinpoint gaps in this field of study Or what are the typical gaps in this kind of research. Any help or suggestion is highly appreciated.

Hello everyone

For a Project, I'm using HEC-RAS 1D to model a little stream through a town. We are talking around 600m in length, bed width of 2m and height of around 1.35-1.5m fully built out of concrete and stone, nothing natural. The Simulation works well for a steady case where we put Q=5m^(3)/s (see attached picture), but for the unsteady case, it does not work, as the Energy line explodes thousands of meters into space and the water level is shown in little triangular pieces. For the unsteady, we put a flow hydrograph with the constant value of 5m^(3)/s over two hours to recreate the conditions of the steady flow case. We looked at Courant number (for time steps), spacing of cross sections, Manning values... but the results always looks the same. From the fact, that the steady flow case works I assume the geometry makes sense. We also deleted all the bridges to get rid of an other possible error. So the problem should be somewhere in the Simulation of the unsteady case I assume. But there I played around with all the values but nothing changed. Does anyone have an idea how to fix this? I am very new to HEC-RAS modelling, the supervisors could also not figure it out yet, I did not find an answer by googling and with the help of chatGpt.

Any help and hint is appreciated

Thanks

steady case Q=5m3/s

unsteady case Q=5m3/s

As the title says, im really confused and dont really know how to use it.

Hello everyone, Im wondering if you anyone of you have the chance to think or to use the AI in hec ras for automating some processes. Even that hec ras is not an open source software. If you got any idea about this please share it here SOS 🔺

Hey Everyone!

I've got a question for you and am looking for some career advice. I'm currently a 2 year PE. I have worked for the same company my entire career. During my time as an EIT/PE, I've primarily worked in watershed analysis/drainage design for a large open pit mine. Prior to me, we really didn't have a hydrologist in the team and had to pull experience from other branches of the company. I dedicated the time and grew the team allowing for a lot of the drainage/hydrology work to come in for our team. I even have an EIT under me now learning the field. However, the work still consists of working for the mine. I'd like to grow my team and bring in work from other sources. Do you have some resources where you look to get government work (e.g. Forest Service, USDA, BLM, National Parks Service etc...)? Such as finding Requests For Proposals or Studies from these organizations that you have used? What advice would you give for someone trying to get work and contribute to the income of the company?

Let me know your thoughts and thank you for taking the time to read this. :)

I will prolly join NMT's Earth Science(Still haven't got the offer letter tho) department for NMT this August for grad school. I am well aware that NMT is well known for Earth Science stuff. I am an international student, so I would like to know if employers in US would hire an international student. I would love to work for the government and I would prefer the national labs but I guess most have US citizenship as the requirement. How hard it would be to get hired as a foreign national?

This might be a stupid question, but where would I go to find the proportions of total rainfall values for a Type 1A storm? I usually model using a standardised 24hr nested storm, with peak at 12hr mark, but a new project requires Type 1A storm, and I need the proportion values to make my hyteograph.

Would taking general physics significantly hurt your application to grad school versus taking calc based physics? Some grad schools i’m looking at don’t specify which physics you need as pre requisites.

I'm working on replicating a few papers that I find interesting and I'm thinking about putting them behind a Python and R SDK for others to access.

Ideally, you can just pass the name of the paper to the SDK and it can reproduce the analysis and figures on a particular dataset within a Jupyter Notebook or R studio.

Here's a example of what I'm thinking about making: https://github.com/Osyris-Tech/Assessing-the-Impact-of-Land-Use-and-Climate-Change-on-Surface-Runoff/blob/main/README.md

Thoughts/ideas on this?

I'm also taking requests for papers anyone wants replicated.

Anyone know of any short-term online courses or workshops on surface water hydrology?

-e.g. catchments, surface water flow concepts and modeling in GIS?

I am an environmental consultant specializing in wetlands looking for some professional development. I can't seem to find anything relevant/suitable that isn't an entire college degree.

Hi! I'm using HEC RAS for an assignment and I've been trying to do a 1D unsteady flow analysis. However, when I look at the results, I keep getting a map where the flood extents are the same everywhere. I don't think this is what I should be getting. I would be grateful for any advice :)

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Hi redditors,

I know this is a really long shot but I really don't know what else I can do.

I'm tring to find a published paper about groundwater discharge that I read a long time ago, there's some content in that paper I'd like to revisit, however I cannot find this paper. I've tried revisiting all the paper I read but still no luck. I wonder some researchers here might've read it and could provide some information to me.

I can't remeber the exact words I was looking for, but basically it mentioned something like ''damming the surface river water could enhance the subsurface groundwater discharge into the coastal zone, due to someting about pressure'. Sorry I know it's vague but that's all I can remember.

Has anyone ever read something like this? or something similar? any help would be much appreciated!

I am interested in potentially becoming a water resource specialist. What is the difference between the grad program of hydrologic sciences at UNR and the water resources management program at UNLV? I’m aware that networking plays a huge role in the job you eventually land, but do most employers even care about where you get your degree from? Do they care about the topic of your thesis? Who your advisor is? The specific coursework you’ve completed? I guess what I’m getting at is how much stress I should put into selecting an institution and should I go out of my way to invest all my energy in getting into a specific school if I want any chance at having a viable career in the field?

I inherited an old 16’ contracted weir on a mountain stream that someone installed way too close to the bend in a river. I have no idea when the last time it was cleaned out so the approach is horrible and the stilling pool is full of rocks. On top of this, the staff gage and telemetry are installed on opposite sides of the weir and thus report 2 different stages due to the uneven flow across the blade. Is it even possible to make a reliable discharge calculation? I do a current measurement once a month and use the staff gage as my reference stage. I tried averaging the staff gage reads with my telemetry to calculate discharge which has actually resulted in a less than 10% difference with my measurements, but I feel like that is just coincidence. I don’t want to fit my data to the results

Hi guys. I am experiencing the above error on a Sontek Flowtracker 2 ADV. Any suggestions on how to solve this?