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| Type: | Resource | |
| Storage: | The size of this resource is 18.2 GB | |
| Created: | May 29, 2026 at 7:56 p.m. (UTC) | |
| Last updated: | Jul 02, 2026 at 9:02 p.m. (UTC) | |
| Citation: | See how to cite this resource |
| Sharing Status: | Discoverable (Accessible via direct link sharing) |
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| Views: | 99 |
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Abstract
In 2018 the Bloede Dam was removed from the Patapsco River near Ilchester, Maryland, USA. Located within Patapsco State Park, the 30ft Bloede Dam was the first hydroelectric dam in the U.S. and the generator was enclosed within its superstructure. However, it had been defunct for nearly a century at the time of its removal and was a considered a safety hazard for swimmers and for the nearby county sanitary sewer main, as well as a barrier to fish passage. As part of the dam removal effort, a study of the channel morphology was initiated by NOAA Fisheries and American Rivers before and after dam removal. Surveyed cross sections were located by Maryland Geological Survey at selected points along the channel upstream, downstream, and within the dam pond itself. To complement the surveyed cross sections, aerial photographs were collected using off-the-shelf aerial drones. The imagery was collected over a similar river length encompassing the Bloede pond prior to, during, and after removal was completed. Structure-from-motion photogrammetry was used to develop point clouds and topo-bathymetric digital elevation models to document channel change between just upstream of the dam pond and about a quarter mile downstream of the dam. This data release includes the imagery from that collection effort used to document sediment evacuation from the dampond. This archive was referenced in the paper by Collins, M.J., Baker, M.E., Cashman, M.J., Miller, A. and Van Ryswick, S., 2024. Impounded sediment and dam removal: Erosion rates and proximal downstream fate. Earth Surface Processes and Landforms, 49(9), pp.2690-2703.
Subject Keywords
Coverage
Spatial
Temporal
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Content
Related Resources
| Title | Owners | Sharing Status | My Permission |
|---|---|---|---|
| Bloede Dam Removal Imagery of the Patapsco River at Ilchester, Maryland, USA | Matthew Baker | Private & Shareable | None |
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| NOAA National Marine Fisheries Service Northeast Fisheries Science Center | Coastal and Marine Habitat Restoration Award | NA13NMF4630127, NA16NMF4630317 and NA19NMF4630270 |
| American Rivers | Aerial Monitoring of the Bloede Dam Removal | CE18NOA248 |
Contributors
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
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| Jack Hardway | Elevated Media Concepts | MD, US |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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