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Layer: Ches Bay Freshwater Fish Passage Data (ID: 4)

Name: Ches Bay Freshwater Fish Passage Data

Display Field: DAM_NAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: Dam data for the Chesapeake Bay watershed. This data was originally compiled in 2017 from multiple state and federal sources and edited by The Nature Conservancy for use in the Chesapeake Fish Passage Prioritization project. These data were "snapped" to a modified (single-flowline, dendritic) version of the high-resolution (1:24,000) National Hydrography Dataset, so that the dam points are geometrically coincident with the stream lines. The data underwent several quality control checks to help ensure that dams are located in the proper location. These include identifying barriers within 100m of another barrier to flag potential duplicates and assessing barriers for similar names using fuzzy string matching. Barriers identified as potential duplicates were manually reviewed against current aerial imagery in ArcGIS Pro. IN the case of duplicates, one barrier was marked as a duplicate and the other retained for use in the analysis. Original Source data (2013). Originally compiled for The Nature Conservancy's Northeast Aquatic Connectivity project from the following sources: • National Inventory of Dams. Washington, DC :US Army Corps of Engineers : Federal Emergency Management Agency. Accessed Feb 24, 2011 • DE: Delaware Dams: Phil Carpenter, Delaware Natural Resources and Environmental Control; personal communication April 13, 2009 • MD: Jim Thompson, Fish Passage Coordinator, Maryland Dept. of Natural Resources. Personal Communication June 9, 2009 • PA: Division of Dam Safety, Department of Environmental Protection; PA Fish and Boat Commission; PA Run of River database Accessed July 10, 2009 • VA: VA Dept. of Game and Inland Fisheries.> David Morton, GISP. Personal communication July 16, 2009 • WV: WV DNR: Wildlife Diversity and Technical Support Units; WV Non-coal dams, DMR Dams, NID dams: WV State GIS Data Clearinghouse: http://wvgis.wvu.edu/data/data.php; Brian Long personal communication September 14, 2009 • USGS Geographic Names Information System (GNIS); https://www.usgs.gov/tools/geographic-names-information-system-gnis Accessed Feb 20, 2010 2019 Version updates included individual review of barriers by members of the Chesapeake Fish Passage Workgroup via ArcGIS Online. In the 2023 updates to the Chesapeake Fish Passage Prioritization tool (https://maps.tnc.org/chesfpp) these data were updated to include data from the following sources: • Road-stream crossings that were rated as "severe" barriers from the North Atlantic Aquatic Connectivity Collaborative database (https://naacc.org) • Dams that have been removed based on the USGS Dam Removal Information Portal (DRIP) database (https://data.usgs.gov/drip-dashboard/)Wieferich, D.J., Duda, J., Wright, J., Uribe, R., Beard J. 2021. drip-dashboard Version 2.3.2. U.S. Geological Survey software release. https://doi.org/10.5066/P9UNIWKF. • Dams that have been removed based American Rivers' database (https://www.americanrivers.org/threats-solutions/restoring-damaged-rivers/dam-removal-map/). Rivers, American (2022): American Rivers Dam Removal Database. HTTPS://DOI.ORG/10.6084/M9.FIGSHARE.5234068.V2 Retrieved: 11:38, August 19, 2022. • USGS fishways database (https://www.usgs.gov/data/fishway-structure-data-eastern-united-states) • Publication Year 2022 • Title Fishway Structure Data in the Eastern United States • DOI 10.5066/P9IB1GWS • Authors Benjamin P Gressler, Alexander J Haro, John A Young • Product Type Data Release • Record Source USGS Digital Object Identifier Catalog • USGS Organization Eastern Ecological Science Center • Virginia Dept. of Conservation and Recreation. https://consapps.dcr.virginia.gov/arcgis/rest/services/AGOL/VFRIS_DamPoints/MapServer/0 Additional attributes provided by Arthur Kay, VA DCR. Personal communication August 17, 2022. • Individual dam updates based on the manual review of barriers by members of the Chesapeake Fish Passage Workgroup via ArcGIS Online. Culvert data is primarily sourced from the North Atlantic Aquatic Connectivity Collaborative (NAACC): https://naacc.org/naacc_data_center_home.cfm These data are based on field surveys of road-stream crossings conducted by trained surveyors, then reviewed and submitted to the NAACC database. Surveyed culverts that are rated as 'Severe' barriers to aquatic connectivity were considered as barriers in the analysis. Additional culvert data were obtained from Maryland DNR as part of the original dam data transfer. These culverts are generally lower in the system and were considered to be barriers to fish passage.

Copyright Text: Dams and other anthropogenic barriers to fish passage in the Chesapeake Bay watershed. Compiled by The Nature Conservancy for the Chesapeake Fish Passage Prioritization project. See https://maps.tnc.org/chesfpp

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