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The shapefiles depict the valley bottom areas over which HEC-RAS model results were summarized. Valley bottoms were manually delineated in ArcMap by visually interpreting LIDAR terrain models and aerial imagery. Substantial changes in elevation, curvature, and slope were interpreted within the context of their position within the study reach to be channel banks and valley walls. Such areas were excluded from the valley bottom delineation.
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The shapefiles depict the 2D HEC-RAS hydraulic modeling domains used for the simulations described in the associated publication. Model domains were delineated in the HEC-RAS geometry editor to encompass river-valley bottoms and adjacent hillslopes of four river reaches of contrasting contributing area and morphology: Seneca Creek at Dawsonville, MD; Patapsco River at Woodstock, MD; Patuxent River at Unity, MD; and Little Gunpowder Falls at Laurel Brook, MD.
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Terrain models representing river channel and terrestrial surface elevations were developed for use in 2D hydraulic modeling with HEC-RAS software. Channel bed elevations were determined from cross-sectional field surveys (Seneca Creek and Patapsco River) or manual corrections of the LIDAR data (Patuxent River and Little Gunpowder Falls) and integrated with the terrestrial LIDAR data.
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Hourly ambient temperature data were collected as part of an effort to empirically evaluate the Upper Mississippi River System inundation model. The goal of this sampling effort was to document inundation through space and time at a limited number of sites but across the range of flow conditions experienced throughout the 2017 growing season. We used temperature data loggers (Onset HOBO Pendant Temperature Data Loggers, model #UA-001-08) to record hourly ambient temperatures at the floodplain’s surface for subsequent analysis of hourly and diurnal flux patterns that would indicate likely submergence. Temperature loggers were deployed in two separate sites within six study segments (Pools 4, 8, 13, 26, La Grange,...
The shapefiles depict the valley bottom areas over which HEC-RAS model results were summarized. Valley bottoms were manually delineated in ArcMap by visually interpreting LIDAR terrain models and aerial imagery. Substantial changes in elevation, curvature, and slope were interpreted within the context of their position within the study reach to be channel banks and valley walls. Such areas were excluded from the valley bottom delineation.
The shapefiles depict the 2D HEC-RAS hydraulic modeling domains used for the simulations described in the associated publication. Model domains were delineated in the HEC-RAS geometry editor to encompass river-valley bottoms and adjacent hillslopes of four river reaches of contrasting contributing area and morphology: Seneca Creek at Dawsonville, MD; Patapsco River at Woodstock, MD; Patuxent River at Unity, MD; and Little Gunpowder Falls at Laurel Brook, MD.
The shapefiles depict the 2D HEC-RAS hydraulic modeling domains used for the simulations described in the associated publication. Model domains were delineated in the HEC-RAS geometry editor to encompass river-valley bottoms and adjacent hillslopes of four river reaches of contrasting contributing area and morphology: Seneca Creek at Dawsonville, MD; Patapsco River at Woodstock, MD; Patuxent River at Unity, MD; and Little Gunpowder Falls at Laurel Brook, MD.
The shapefiles depict the valley bottom areas over which HEC-RAS model results were summarized. Valley bottoms were manually delineated in ArcMap by visually interpreting LIDAR terrain models and aerial imagery. Substantial changes in elevation, curvature, and slope were interpreted within the context of their position within the study reach to be channel banks and valley walls. Such areas were excluded from the valley bottom delineation.
The shapefiles depict the 2D HEC-RAS hydraulic modeling domains used for the simulations described in the associated publication. Model domains were delineated in the HEC-RAS geometry editor to encompass river-valley bottoms and adjacent hillslopes of four river reaches of contrasting contributing area and morphology: Seneca Creek at Dawsonville, MD; Patapsco River at Woodstock, MD; Patuxent River at Unity, MD; and Little Gunpowder Falls at Laurel Brook, MD.
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The shapefiles depict the valley bottom areas over which HEC-RAS model results were summarized. Valley bottoms were manually delineated in ArcMap by visually interpreting LIDAR terrain models and aerial imagery. Substantial changes in elevation, curvature, and slope were interpreted within the context of their position within the study reach to be channel banks and valley walls. Such areas were excluded from the valley bottom delineation.
The shapefiles depict the valley bottom areas over which HEC-RAS model results were summarized. Valley bottoms were manually delineated in ArcMap by visually interpreting LIDAR terrain models and aerial imagery. Substantial changes in elevation, curvature, and slope were interpreted within the context of their position within the study reach to be channel banks and valley walls. Such areas were excluded from the valley bottom delineation.
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This spreadsheet reports HEC-RAS model parameters and hydrologic data for 2D hydraulic simulations of the four study reaches described in the associated publication. Model parameters include the energy grade slope for distributing flow at the upstream boundary and normal depth friction slope. Hydrologic data include 5 hydrographs per study reach. The hydrographs represent a range of low to high magnitude flooding events based on the historical instantaneous discharge records. To develop the hydrographs, first an aggregate flood event series was extracted by identifying likely overbank flows from the instantaneous discharge record for each study reach. Then, peak discharges during each flood event were temporally...
The shapefiles depict the 2D HEC-RAS hydraulic modeling domains used for the simulations described in the associated publication. Model domains were delineated in the HEC-RAS geometry editor to encompass river-valley bottoms and adjacent hillslopes of four river reaches of contrasting contributing area and morphology: Seneca Creek at Dawsonville, MD; Patapsco River at Woodstock, MD; Patuxent River at Unity, MD; and Little Gunpowder Falls at Laurel Brook, MD.


    map background search result map search result map Complex interactions among river-valley morphology, basin size, and flow-event magnitude structure the physical template of floodplain ecosystems: Data Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains LittleGunpowderFalls Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Patapsco Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Patuxent Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Seneca Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Model Paramenters and Quantile Hydrographs Shapefiles depicting the valley bottom areas. LittleGunpowderFalls Shapefiles depicting the valley bottom areas. Patapsco Shapefiles depicting the valley bottom areas. Patuxent Shapefiles depicting the valley bottom areas. Seneca Shapefiles depicting the valley bottom areas. Terrain models representing river channel and terrestrial surface elevations were developed for use in 2D hydraulic modeling with HEC-RAS software. LittleGunpowderFalls Shapefiles depicting the valley bottom areas. Patapsco Shapefiles depicting the valley bottom areas. Patuxent Shapefiles depicting the valley bottom areas. Patuxent Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains LittleGunpowderFalls Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Seneca Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Complex interactions among river-valley morphology, basin size, and flow-event magnitude structure the physical template of floodplain ecosystems: Data Shapefiles depicting the 2D HEC-RAS hydraulic modeling domains Model Paramenters and Quantile Hydrographs Shapefiles depicting the valley bottom areas. Terrain models representing river channel and terrestrial surface elevations were developed for use in 2D hydraulic modeling with HEC-RAS software.