Molly Van Appledorn

UMRS Floodplain Inundation Attributes - Pool 26

Floodplain inundation is believed to be the dominant physical driver of an array of ecosystem patterns and processes in the Upper Mississippi River System (UMRS). Here, we present the results of a geospatial surface-water connectivity model in support of ecological investigations fully described in the USGS Open File Report entitled “Indicators of Ecosystem Structure and Function for the Upper Mississippi River System” (De Jager et al., in review). Briefly, we identified likely instances of floodplain submergence by comparing a daily time series of gage-derived water surface elevations to topo-bathymetric data modified to account for slopes and hydrologic routing. The resulting raster attribute table contains columns...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Hydrogeomorphology, Illinois River, Upper Mississippi River, flood regime, floodplain, All tags... hydrology, inundation, Fewer tags

UMRS Floodplain Inundation Attributes - Pool 9

Floodplain inundation is believed to be the dominant physical driver of an array of ecosystem patterns and processes in the Upper Mississippi River System (UMRS). Here, we present the results of a geospatial surface-water connectivity model in support of ecological investigations fully described in the USGS Open File Report entitled “Indicators of Ecosystem Structure and Function for the Upper Mississippi River System” (De Jager et al., in review). Briefly, we identified likely instances of floodplain submergence by comparing a daily time series of gage-derived water surface elevations to topo-bathymetric data modified to account for slopes and hydrologic routing. The resulting raster attribute table contains columns...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Hydrogeomorphology, Illinois River, Upper Mississippi River, flood regime, floodplain, All tags... hydrology, inundation, Fewer tags

Future climate conditions in the Upper Mississippi River Basin are projected to include many more extreme precipitation events. These intense periods of rain can lead to flooding of the Mississippi River itself, as well the small streams and rivers that feed it. This flooding presents a challenge for local communities, farmers, small businesses, river users, and the ecosystems and wildlife in the area. To reduce the damage done by these extreme rainfall events, ‘natural solutions’ are often helpful. This might include preserving forests and grasslands to absorb rainwater before it arrives at streams or restoring wetlands to slow and clean runoff water. For river and natural resource managers to adapt to future climate...

Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2022, CASC, Drought, Fire and Extreme Weather, Drought, Fire and Extreme Weather, Extreme Weather, All tags... Extreme Weather, Midwest, Midwest CASC, Other Water, Projects by Region, Rivers, Streams and Lakes, Rivers, Streams and Lakes, Science Tools for Managers, Science Tools for Managers, Social Science, Social Science, State of the Science, Water, Coasts and Ice, Water, Coasts and Ice, Fewer tags

Seneca Shapefiles depicting the valley bottom areas

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.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Little Gunpowder Falls, Laurel Brook, Maryland, USA, Patapsco River, Woodstock, Maryland, USA, Patuxent River, Unity, Maryland, USA, Seneca Creek, Dawsonville, Maryland, USA, biota, All tags... flood regime, floodplain, hydrogeomorphology, hydrology, inundation, Fewer tags

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.

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Little Gunpowder Falls, Laurel Brook, Maryland, USA, Patapsco River, Woodstock, Maryland, USA, Patuxent River, Unity, MD, Maryland, USA, Seneca Creek, Dawsonville, Maryland, USA, biota, All tags... flood regime, floodplain, hydrogeomorphology, hydrology, inundation, Fewer tags