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Floods, Floodplains, and Fluvial Studies
Type: Paper Session
Time: 11/7/2020 03:30 PM (Eastern Time (US & Canada)) to 4:45 PM
Session Description and Agenda
Special Paper Session: Floods, Floodplains, and Fluvial Studies
1) Getting your feet wet: Strategies for implementing field-based stream research in large undergraduate classes
2) Variations in the Water Quality of Tributary Streams within the Cache River Watershed in Eastern Arkansas
3) Drivers for vegetation recovery on point bars – modeling and mapping vegetation regrowth in the mid-Apalachicola River, Florida
4) Origin Hypothesis for North Carolina Outer Banks Barrier Islands, Capes, and Coastal Plain Surface Hydrology Patterns
5) Insights from Paired Profiles of a Disturbed Coastal Plain River
| Sarah Praskievicz | Getting your feet wet: Strategies for implementing field-based stream research in large undergraduate classes | 10 |
| Amelia Atwell | Variations in the Water Quality of Tributary Streams within the Cache River Watershed in Eastern Arkansas | 10 |
| Yin-Hsuen Chen | Drivers for vegetation recovery on point bars – modeling and mapping vegetation regrowth in the mid-Apalachicola River, Florida | 10 |
| Marcus Norton | Origin Hypothesis for North Carolina Outer Banks Barrier Islands, Capes, and Coastal Plain Surface Hydrology Patterns | 10 |
| Joann Mossa | Insights from Paired Profiles of a Disturbed Coastal Plain River | 10 |
Insights from Paired Profiles of a Disturbed Coastal Plain River
Session: Floods, Floodplains, and Fluvial Studies
Type: Paper Session
Abstract
Starting in the late 1950s, the Apalachicola River has had multiple disturbances that include the addition of a dam at the juncture of its two major tributaries, active dredging and de-snagging and artificial cutoff creation as part of a navigation project, followed more recently by passive recovery once dredging ended in 2001. Given its history of alteration, the Corps conducted an early hydrographic or river-bed survey in 1960 to facilitate navigation. More recently, they performed a multi-beam survey in 2010. Comparing both surveys gives insights regarding the channel bed and its changes. We interpret these surveys to identify areas along the river that appear unusual, including transition zones and zones of excessive change. On individual profiles, we note several deep pools or mega-pools along the channel and bed variation changes that occur at distributaries and where the river becomes tidal. On comparative profiles, we note areas of bed elevation increase associated with poor dredge spoil mound placement, bed elevation reversals from highs to lows and vice versa at hooks and bays associated with rapid channel migration, and degradation or lowering of elevation at some distance downstream of the Jim Woodruff dam. These preliminary observations suggest areas of consideration for more detailed study.
Authors
Joann Mossa, University of Florida, Dept. of Geography
Submitting Author / Primary Presenter
Yin-Hsuen Chen, University of Florida, Dept. of Geography
Co-Author (this author will not present)
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Insights from Paired Profiles of a Disturbed Coastal Plain River
Category
Paper Session