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HEC-RAS model

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Journal Article
Published: 01 March 2024
Jour. Geol. Soc. India (2024) 100 (3): 367–376.
... government and policymakers to manage the flood properly. One such flood management activity is to develop a flood-prone area that depicts the spatial and temporal extent of flood accurately. The integration of the Hydrologic Engineering Centre - River Analysis System (HEC-RAS) model and geospatial tools...
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Results of U.S. Army Corps of Engineers Hydrologic Engineering Center’s Riv...
Published: 14 July 2017
Figure 12. Results of U.S. Army Corps of Engineers Hydrologic Engineering Center’s River Analysis System (HEC-RAS) model hydrograph simulation for (A) input hydrograph with a peak flow of 96.8 m 3 /s and (B) routed to 14.8 km. The flow was routed through the 1936 and 2007 cross sections ( Fig. 5
Journal Article
Published: 01 February 2002
Environmental & Engineering Geoscience (2002) 8 (1): 47–61.
...Jason J. Wiles; Norman S. Levine Abstract This study investigates the effects of changes in land-use on the hydrology of the Swan Creek watershed in Lucas County, Ohio, over a thirty-year period. The study presents the GIS based runoff models and the HEC-RAS Flood analysis for the watershed...
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Flow chart describing the digital elevation <span class="search-highlight">model</span> (DEM) and discharge input...
Published: 23 March 2020
Fig. 3. Flow chart describing the digital elevation model (DEM) and discharge input and output for each flood model run using HEC-RAS and CAESAR–Lisflood. A CAESAR–Lisflood-simulated bed elevation DEM was input into Runs 2D and 3D. The output grain-size layer in Run 1B was used in Run 3D
Journal Article
Published: 23 March 2020
Scottish Journal of Geology (2020) 56 (2): 101–116.
...Fig. 3. Flow chart describing the digital elevation model (DEM) and discharge input and output for each flood model run using HEC-RAS and CAESAR–Lisflood. A CAESAR–Lisflood-simulated bed elevation DEM was input into Runs 2D and 3D. The output grain-size layer in Run 1B was used in Run 3D...
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Journal Article
Published: 18 May 2020
Environmental & Engineering Geoscience (2020) 26 (4): 393–404.
... by the HEC-RAS. However, we determined through testing that (1) using relatively small cells in the steepest areas and (2) utilizing relatively high values of Manning's n, as suggested by Jarret (1984), the model would provide good approximations. For verification of these two assumptions, an additional...
Journal Article
Published: 21 February 2022
Environmental & Engineering Geoscience (2022) 28 (1): 93–111.
... the combined usage of hydrologic and hydraulic models (HEC-HMS and Hydrologic Engineering Center–River Analysis System [HEC-RAS]) for simulation of extreme events for the Bostanli River basin in Turkey. Mandal et al. (2013 , 2016 ) described application of hydrological modeling for flood peak flow estimation...
Journal Article
Published: 16 October 2018
Journal of Sedimentary Research (2018) 88 (10): 1190–1204.
... study has been simulated by implementing a one-dimensional model from the US Army Corps of Engineers' River Analysis System ( US Army Corps of Engineers 2015 ). HEC-RAS is a computer model developed by the Hydrological Engineering Center (HEC) that simulates the flow of water in rivers and has been...
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Journal Article
Journal: GSA Bulletin
Published: 14 July 2017
GSA Bulletin (2017) 129 (11-12): 1660–1680.
...Figure 12. Results of U.S. Army Corps of Engineers Hydrologic Engineering Center’s River Analysis System (HEC-RAS) model hydrograph simulation for (A) input hydrograph with a peak flow of 96.8 m 3 /s and (B) routed to 14.8 km. The flow was routed through the 1936 and 2007 cross sections ( Fig. 5...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2017
GSA Bulletin (2017) 129 (3-4): 500–512.
... material: As shown in the LiDAR cross sections and HEC-RAS inundation models ( Figs. 2 and 8 ), the hydraulic radius of the channel varies between 1 and 6 m, depending on location and discharge magnitude. Based on field observations, the D 84 of the bed material is between 0.01 m and 0.5 m...
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Journal Article
Journal: Geology
Published: 01 May 2001
Geology (2001) 29 (5): 431–434.
...]), where numerous high-water marks of the 1998 flood exist. Two cross sections were surveyed perpendicular to the channel, and these data were subsequently input into a hydraulic model (HEC-RAS) to determine the magnitude and hydraulic characteristics of this event. HEC-RAS calculates discharge and other...
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Journal Article
Published: 19 March 2018
Quarterly Journal of Engineering Geology and Hydrogeology (2018) 51 (2): 219–228.
... to calculate mean flow velocity ( u ), average bed shear stress ( τ 0 ) and unit stream power dissipation (Π UD ) at each of the identified examination areas using a combination of analytical hand calculations and 1D numerical modelling using HEC-RAS ( USACE 2010 ). The numerical modelling provided a more...
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Journal Article
Journal: Geology
Published: 17 April 2020
Geology (2020) 48 (7): 663–667.
... ). A slab of sediment orthogonal to the layering was extracted on deck from each box-core, kept in a cold room (4 °C), and X-rayed in laboratory after 10 d. The evolution of the water profile and bed shear stress was numerically simulated using the one-dimensional model Hec-Ras 5.0.7 ( https...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2013
GSA Bulletin (2013) 125 (7-8): 1114–1124.
... m, which is less than the average high-flow width of the channel, ∼64 m. We used HEC-GeoRAS to generate input hydraulic geometry data for HEC-RAS ( www.hec.usace.army.mil/software/hec-ras/index.html ) in order to model floods within the Arroyo Seco canyon. This study benefits from a 104 yr...
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Journal Article
Published: 01 August 2017
Environmental & Engineering Geoscience (2017) 23 (3): 221–241.
..., and an HEC-RAS hydraulic model at each site was used to determine flow velocity and depth corresponding to each desired return-period flow rate. Watershed boundaries were delineated using digital elevation maps from the National Elevation Dataset (USGS, 2009 ) and the TOPAZ computational tool developed...
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Journal Article
Published: 01 February 2006
Environmental & Engineering Geoscience (2006) 12 (2): 103–113.
... such that available habitat is determined every 2.0 ft (0.6 m) across the channel. Other models (e.g., HEC-RAS [ U.S. Army Corps of Engineers, 2004 ] or KINEROS [ U.S. Department of Agriculture, 1990 ]) would, in practice, have much lower resolution for determining water depth and velocity across a transect (∼10...
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Journal Article
Published: 01 May 2008
Vadose Zone Journal (2008) 7 (2): 741–756.
... of the most widely used codes: MODFLOW and HEC-RAS. Following the review of these megacodes, other commercial and noncommercial applications in different disciplines associated with coupled surface–subsurface flow are reviewed. Some representative examples of the models described are summarized in Table 1...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2001
GSA Bulletin (2001) 113 (9): 1205–1212.
..., channel geometry was characterized through field surveys. Reach-averaged width/depth ratios were calculated using paleostage indicators of maximum discharge. Flow hydraulics were estimated using the step-backwater model HEC-RAS ( Hydrologic Engineering Center, 1995 ). Total stream power and unit...
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Journal Article
Published: 01 December 2023
Jour. Geol. Soc. India (2023) 99 (12): 1671–1682.
... is an attempt to analyze the flood frequency in the lower reaches of the Ghagra River. It can be utilized for constructing flood vulnerability zones, flood susceptibility mapping and flood modeling using the HEC-RAS tool ( Malik and Pal, 2021 ), etc. There are several other methods also available to deal...
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Journal Article
Published: 21 February 2022
Quarterly Journal of Engineering Geology and Hydrogeology (2022) 55 (3): qjegh2021-060.
... – 2104 , https://doi.org/10.1002/2015TC003922 Getahun , Y.S. and Gebre , S.L . 2015 . Flood hazard assessment and mapping of flood inundation area of the Awash River Basin in Ethiopia using GIS and HEC-GeoRAS/HEC-RAS Model . Journal of Civil and Environmental Engineering , 5 , 179...
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