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The USACE has released a new version of HEC-RAS that has several new features.

The 5.0.7 updated features fixes include:

  • Bug for drawing a polygon in the Manning’s n Regions option
  • Bug for uniform lateral inflow
  • Floodway inundation boundary mapping issue
  • RAS Mapper not saving all breakline options issue
  • External SA/2D hydraulic structures Issue
  • Lateral structure connection to 2D Area issue
  • 1D velocity and DV mapping
  • ...

Read More - HEC-RAS Version 5.0.7 Released

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TagsHEC-RAS, USACE,

The USACE released new version HEC-RAS 5.0.6 that repairs a list of problems from the previous version. Updates were made to the 2D Manning’s N Regions, RAS Mapper Stored Maps, Advanced Time Step Control, Lateral Structure Connections and more.

This version supersedes all previous versions. For a full list of the updates, click here .

Click here for download.

Read More - HEC-RAS Version 5.0.6 Released

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TagsHEC-RAS, modeling, 2D modeling,

We are excited to be presenting at the Oklahoma Floodplain Managers Association Annual Conference Sept. 16-19 at the Stoney Creek Hotel and Conference Center in Broken Arrow, Oklahoma. We look forward to connecting with you at one of our three presentations:

Title: Harness the Power of 2D for Road Design Time: Monday, September 17 1:00-2:30 PM (Salon A) Presenters: Justin Oswald, PE, CFM What: Justin will provide a...

Read More - Come See Us at OFMA

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TagsHEC-RAS, stormwater management, asset management, roadway design, 2-D Modeling, storm drainage improvements,

Freese and Nichols is offering interactive workshops for the Hydrologic Engineering Center-River Analysis System, better known as HEC-RAS. This free software, developed by the U.S. Army Corps of Engineers , includes 2D flow modeling capabilities that can depict flow patterns more accurately than one-dimensional models. HEC-RAS 2D equips dam owners and floodplain managers with more realistic models of complex river systems and large flood events, such as hypothetical dam breaches....

Read More - HEC-RAS 2D: Hands-On Training for Better Modeling

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TagsHEC-RAS, modeling, 2-D Modeling,

We are pleased to welcome our new Stormwater hires, Ed Dickson and Jim Keith, who will bolster our ability to support a variety of municipalities, water districts and complex projects.

Ed, who is based in our new Charlotte office, is a water resources and stormwater engineer and nationally recognized for his floodplain mapping work. His specialization is in watershed-based H&H analysis, mapping and reviews for Federal Emergency Management Agency (FEMA) flood studies...

Read More - Ed Dickson Joins Freese and Nichols' Stormwater Team

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TagsStormwater, dallas, north carolina, FEMA, HEC-RAS, HEC-HMS,

We’re proud to be presenting at the TFMA Fall Technical Summit. We look forward to connecting with you.

Title: Hands-On HEC-RAS 2D (For Intermediate 1D Users) Time : 8 a.m. – 5 p.m. Tuesday, Aug. 28 Presenters: Garrett Johnston, PE, CFM, GISP, Freese and Nichols; Boris Minot, PE, CFM, Freese and Nichols What: This hands-on workshop will provide an overview of the new two-dimensional flow modeling capabilities...

Read More - Join us at the TFMA Fall Technical Summit

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TagsTFMA, Stormwater, HEC-RAS, dam safety, Hurricane harvey,

A typical detention pond design will include an overflow weir for safely passing high inflows downstream. In many cases, an engineer will design the weir using a one-dimensional (1D) hydraulic model with “textbook” weir coefficients.

These commonly-accepted values are based on lab tests and measurements, and are limited by certain assumptions (for example, flow is assumed to be uniformly distributed across the weir). The following case study illustrates how 3D modeling software can...

Read More - A Case Study in 3D Stormwater Modeling

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Tags3D modeling, Stormwater, HEC-RAS, detention pond,

The USACE has released a new version of HEC-RAS that has several new features.

Those features include enhancement to storage area/ 2D hydraulic connections, variable time steps, internal boundary conditions lines for 2D areas, new velocity term for 2D flow area boundary conditions and RAS Mapper editing tools.

Other minor enhancements were added and repairs were made as well.

For a more detailed description of the changes and to...

Read More - HEC-RAS Version 5.0.4 Released

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TagsHEC-RAS, USACE,

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