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High Water Marks July and December 2023 Vermont Floods - UVM Floodplains
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Type: Resource
Storage: The size of this resource is 181.1 MB
Created: Sep 06, 2024 at 11:56 a.m.
Last updated: Sep 09, 2024 at 1:01 p.m.
DOI: 10.4211/hs.5d88721054a5458d93ad837192f38abb
Citation: See how to cite this resource
Sharing Status: Published
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Abstract

This dataset represents high-water mark observations made following widespread flooding in Vermont on July 10-11 and December 18, 2023. Sites visited following flood recession are part of a long-term floodplain monitoring network 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 "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

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
45.0134°
East Longitude
-72.4054°
South Latitude
44.0738°
West Longitude
-73.4052°

Content

Readme.txt 

Surveyed High Water Marks During the July 10-11, 2023 and December 18, 2023 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 and December 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#", flood event, Easting/Northing/Elevation coordinates in VT State Plane (m), date initially flagged and date surveyed, a description of the HWM, metrics of the data quality, and any additional notes. 
- "December 2023 HWM Photos" folder: Contains images collected immediately following the December 18, 2023 flood, with the naming matching the point name in the xlsx file
- "July 2023 HWM Photos" folder: Contains images collected immediately following the July 10-11, 2023 flood, with the naming matching the point name in the xlsx file
- "GPS_Quality_rating.txt": Describes the criteria used to assess a 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 Sea Grant, University of Vermont
National Oceanic and Atmospheric Administration Cooperative Institute for Research to Operations in Hydrology (CIROH) NA22NWS4320003

How to Cite

Diehl, R., K. Johnston (2024). High Water Marks July and December 2023 Vermont Floods - UVM Floodplains, HydroShare, https://doi.org/10.4211/hs.5d88721054a5458d93ad837192f38abb

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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