Filters: partyWithName: U.S. Geological Survey (X) > partyWithName: Peter C Esselman (X)
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The erosion and active transport of legacy mine tailings (called “stamp sands”) are impacting native fish species and aquatic habitats on a shallow water rocky reef complex along the Keweenaw Peninsula of Michigan called Buffalo Reef. Stamp sands are spreading from an old mill site at the Town of Gay and settling on the reef. Multiple surveys have documented the underwater migration of toxic, metal-rich stamp sands and progressive burial of areas of hard/complex lakefloor, such as cobble fields. The finer-grained, muddy fraction of the mine tailings has been winnowed by waves and currents and transported to unknown locations in deeper waters offshore. High-resolution geophysical mapping of the bay in 2018 revealed...
The erosion and active transport of legacy mine tailings (called “stamp sands”) are impacting native fish species and aquatic habitats on a shallow water rocky reef complex along the Keweenaw Peninsula of Michigan called Buffalo Reef. Stamp sands are spreading from an old mill site at the Town of Gay and settling on the reef. Multiple surveys have documented the underwater migration of toxic, metal-rich stamp sands and progressive burial of areas of hard/complex lakefloor, such as cobble fields. The finer-grained, muddy fraction of the mine tailings has been winnowed by waves and currents and transported to unknown locations in deeper waters offshore. High-resolution geophysical mapping of the bay in 2018 revealed...
The erosion and active transport of legacy mine tailings (called “stamp sands”) are impacting native fish species and aquatic habitats on a shallow water rocky reef complex along the Keweenaw Peninsula of Michigan called Buffalo Reef. Stamp sands are spreading from an old mill site at the Town of Gay and settling on the reef. Multiple surveys have documented the underwater migration of toxic, metal-rich stamp sands and progressive burial of areas of hard/complex lakefloor, such as cobble fields. The finer-grained, muddy fraction of the mine tailings has been winnowed by waves and currents and transported to unknown locations in deeper waters offshore. High-resolution geophysical mapping of the bay in 2018 revealed...
This dataset includes two folders of spatial data associated with the Ganaraska River. The folder Ganaraska_River includes five files: 1) The portion of the Ontario Integrated Hydrology Dataset Enchanced Watercouse in the river watershed, 2) the location of the study sites, 3) the delineated valley segments on the river mainstem, 4) the valley segment boundary locations, and 5) the watershed outline boundary. The folder Ganaraska_SiteCAT includes the upstream catchment area for each study site.
This dataset includes two folders of spatial data associated with the Grand River. The folder Grand_River includes five files: 1) The portion of the Ontario Integrated Hydrology Dataset Enchanced Watercouse in the river watershed, 2) the location of the study sites, 3) the delineated valley segments on the river mainstem, 4) the valley segment boundary locations, and 5) the watershed outline boundary. The folder Grand_SiteCAT includes the upstream catchment area for each study site.
This dataset includes information about valley segment and catchment summaries, valley characteristics, instream habitat, and fish for valley segments, sites, and transects along four river mainstems in Ontario, Canada. Moving west to east, the rivers include the Grand River which ends in Lake Erie at Port Maitland, the Ganaraska River which ends in Lake Ontario at Port Hope, the Trent River which ends in the Bay of Quinte at Trenton, and the Petawawa River which ends in the Ottawa River at Petawawa. These rivers vary in natural character, anthropogenic development, and fish assemblages. Riverine sites along the mainstems of all four rivers included a total of one hundred and twelve sites. Sampling on the Grand,...
This dataset includes two folders of spatial data associated with the Trent River. The folder Trent_River includes five files: 1) The portion of the Ontario Integrated Hydrology Dataset Enchanced Watercouse in the river watershed, 2) the location of the study sites, 3) the delineated valley segments on the river mainstem, 4) the valley segment boundary locations, and 5) the watershed outline boundary. The folder Trent_SiteCAT includes the upstream catchment area for each study site.
The erosion and active transport of legacy mine tailings (called “stamp sands”) are impacting native fish species and aquatic habitats on a shallow water rocky reef complex along the Keweenaw Peninsula of Michigan called Buffalo Reef. Stamp sands are spreading from an old mill site at the Town of Gay and settling on the reef. Multiple surveys have documented the underwater migration of toxic, metal-rich stamp sands and progressive burial of areas of hard/complex lakefloor, such as cobble fields. The finer-grained, muddy fraction of the mine tailings has been winnowed by waves and currents and transported to unknown locations in deeper waters offshore. High-resolution geophysical mapping of the bay in 2018 revealed...
This dataset includes two folders of spatial data associated with the Petawawa River. The folder Petawawa_River includes five files: 1) The portion of the Ontario Integrated Hydrology Dataset Enchanced Watercouse in the river watershed, 2) the location of the study sites, 3) the delineated valley segments on the river mainstem, 4) the valley segment boundary locations, and 5) the watershed outline boundary. The folder Petawawa_SiteCAT includes the upstream catchment area for each study site.
The erosion and active transport of legacy mine tailings (called “stamp sands”) are impacting native fish species and aquatic habitats on a shallow water rocky reef complex along the Keweenaw Peninsula of Michigan called Buffalo Reef. Stamp sands are spreading from an old mill site at the Town of Gay and settling on the reef. Multiple surveys have documented the underwater migration of toxic, metal-rich stamp sands and progressive burial of areas of hard/complex lakefloor, such as cobble fields. The finer-grained, muddy fraction of the mine tailings has been winnowed by waves and currents and transported to unknown locations in deeper waters offshore. High-resolution geophysical mapping of the bay in 2018 revealed...
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