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| Type: | Resource | |
| Storage: | The size of this resource is 177.9 MB | |
| Created: | Jul 22, 2025 at 4:06 p.m. (UTC) | |
| Last updated: | Jul 27, 2025 at 11:17 a.m. (UTC) | |
| Citation: | See how to cite this resource | |
| Content types: | CSV Content |
| Sharing Status: | Public |
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Abstract
This dataset represents high-water mark observations made following widespread flooding in Vermont on July 10-11, 2024. Sites visited following flood recession are part of a long-term floodplain monitoring and habitat assessment maintained by the University of Vermont. Immediately after the floods, field teams flagged high water marks, took photos, and marked the locations with smart phone GPS. Subsequently a survey team revisited the sites with an RTK-GPS to more precisely capture the location and elevation and post-processed through NOAA's OPUS.
Data quality is noted based on the following:
Field Rating: Based on initial site visits. Field personnel noted their confidence level in the indicators of the high water marks. High confidence are noted as "Excellent" or "Good", and lower confidence points are noted as "Fair" or "Poor"
GPS Quality: Based on RTK-GPS survey quality. More information can be found in accompanying txt file.
Subject Keywords
Coverage
Spatial
Content
Readme.txt
Surveyed High Water Marks During the July 10-11, 2024 Floods in the Lake Champlain Basin, Vermont This HydroShare resource documents the peak inundation location & elevation collected following widespread flood events in Vermont in 2023. The resource is designed to support flood and floodplain research and flood inundation products by providing data useful for the calibration and validation of hydraulic models. Resource Contents: - "UVM July 2024 HWM Surveys.xlsx": Contains the description of each surveyed point, including the point name which is associated with a floodplain site noted as "Site_HWM#", description of the field indicator, Easting/Northing/Elevation coordinates in VT State Plane (m), date initially flagged and date surveyed, , and metrics of the data quality - "July 2024 HWM Photos" folder: Contains images collected immediately following the July 10-11, 2024 flood, with the naming matching the point name in the xlsx file - "GPS_Quality_rating.txt": Describes the criteria used to assess a Excellent, Good, Fair, or Poor GPS quality rating.
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| Lake Champlain Basin Program | Evaluating Habitat Function in Floodplain Natural Communities of the Lake Champlain Basin to Support Conservation and Restoration Prioritization | LS-2023-005 |
| National Oceanic and Atmospheric Administration | Cooperative Institute for Research to Operations in Hydrology (CIROH) | NA22NWS4320003 |
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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