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Location Folder Show Tree ROOT _ScienceBase Catalog __Great Lakes Science Center (GLSC) ___Great Lakes Science Center Published Data 2010-2017 zooplankton data from whole water-column tows in Lakes Michigan and Huron Algal communities in the Grand Calumet River Area of Concern Bottom dissolved oxygen measurements from Lake Erie's Central Basin Cladophora biomass and supporting data collected in the Great Lakes Fish eggs collected in the St. Clair, Detroit, and St. Marys rivers More... Filters Date Range Past year (17) Past month (1) Past week (1) Past day (0) Custom range... To   Search Extensions Shapefile (6) Types Citation (12) Map Service (7) OGC WFS Layer (7) OGC WMS Layer (7) Downloadable (6) Shapefile (6) OGC WMS Service (1) Contacts U.S. Geological Survey - ScienceBase Great Lakes Science Center Ecosystems Scott R Nelson Mary A Evans More... Categories Data Release - Revised (8) Tag Types Theme (63) Place (63) USGS Scientific Topic Keyword (33) Harvest Set (40) LCC End User Type (1) ISO 19115 Topic Category (1) LCC Deliverable (1) More... Tag Schemes USGS Thesaurus (56) Getty Thesaurus of Geographic Names (43) Great Lakes Science Center Defined (7) Common geographic areas (31) None (23) Geographic Names Information System (12) ISO 19115 Topic Category (48) More... View Results as: JSON ATOM CSV Browse Folder

1930-1932 Gill net data from Lake Michigan These data describe the catch and biological data from 363 bottom-set gill-net lifts distributed throughout Lake Michigan (including main basin and Green Bay) between April and November in 1930–1932. Data collected from the R/V Fulmar were recorded in notebooks and are now archived at the U.S. Geological Survey’s Great Lakes Science Center. Each lift included 1–7 gangs of linen gill nets. Each gang comprised 3–5 panels each having a length of 155 m, a height of 1.5 m, and a (stretch-)mesh size of either 60, 64, 67, 70, or 76 mm. The digitization of the Fulmar data notebooks was started in the late 1990s and finished in this study. Categories: Data; Tags: Aquatic Biology, Cisco, Ecology, Fishing with Benthic Fixed Gear, Gill net, All tags... Lake Michigan, Lake Michigan, USGS Science Data Catalog (SDC), benthic ecosystems, biota, fish, fisheries biology, fishery management, freshwater ecosystems, habitats, inland fishery resources, Fewer tags The effects of North American fungi and bacteria on Phragmites australis leaves 2017-2019, with comparisons to the global Phragmites microbiome The data document the results of several microbe bioassays performed by the USGS on Phragmites australis plants, including those performed on mature leaves, seedlings, and dead leaf tissues exploration of the literature to find accounts of microbes associated with Phragmites worldwide. For the bioassays, we prepared 162 pure cultures isolated from Phragmites plants in North America along the east coast, Florida, the Gulf of Mexico, and the Great Lakes area, 125 of which were from a previous study, and 38 represent new collections. The DNA sequences used to identify the 37 new collections are included. Microbes were isolated from plants collected from 2015-2018. We performed assays using both North American plant... Categories: Data; Tags: Africa, Asia, China, DNA sequencing, Ecology, All tags... Europe, Florida, France, Genetics, Germany, Hong Kong, Indiana, Italy, Japan, Louisiana, Maine, Maryland, Michigan, New Jersey, North America, North Carolina, Ohio, Philippines, Poland, Portugal, Rhode Island, Russia, Spain, USGS Science Data Catalog (SDC), United Kingdom, Virginia, bacteria, biota, flowering plants, fungi, pathology, plant and animal testing, systematics and taxonomy, Fewer tags Lake Erie Ecological Investigations 1980-2000: Benthic Invertebrate Community Analysis This Benthic Invertebrate Community Analysis dataset, a conceptual subgroup of the Lake Erie Ecological Investigations (LEEI) dataset, focuses on the benthic invertebrates sampled at Areas of Concern (AOCs) on Lake Erie. Per the Quality Assurance Project Plan (QAPP), the invertebrate samples were taken from sediments remaining from the sediment analysis. Identification of the invertebrates was completed by the same invertebrate taxonomist for both the 1998-2000 evaluation and 1986-87 historical evaluation (Smith et al. 1994) for increased consistency. Oligochaetes were identified to species if possible, chironomids were identified to genus, as adult specimens are needed for specific identification, and other taxa... Categories: Data; Tags: AOCs, Ameiurus nebulosus, Ashtabula, Ashtabula River, Black River, All tags... Black River, Buffalo, Buffalo River, Cleveland Harbor, Cleveland Harbor, Cuyahoga River, Cuyahoga River, Detroit, Detroit River, Detroit River, Great Lakes, Great Lakes, Great Lakes, Great Lakes Areas of Concern, Huron River, Lake Erie, Lake Erie, Lake Erie, Lake or marine sediment, Love Canal (historical), Maumee River, Michigan, Michigan, Mud Brook, Mud Brook, New York, New York, Niagara River, Niagara River, Ohio, Ohio, Old River, Old Woman Creek, Old Woman Creek, Ottawa River, PAHs, PCBs, Pennsylvania, Pennsylvania, Presque Isle Bay, Presque Isle Bay, aquatic ecosystems, benthos, benthos, biomarkers, biota, brown bullhead, contamination and pollution, datasets, ecotoxicology, environment, field sampling, fish, fish, freshwater ecosystems, heavy metal pollution, histology, industrial pollution, inlandWaters, invertebrates, invertebrates, liver tumors, metal elements, pathology, pesticide and herbicide contamination, plant and animal testing, polyaromatic hydrocarbons, polychlorinated biphenyls, population and community ecology, remediation, sediment, sediment analysis, species diversity, specimen collecting, toxic trace element contamination, water resources, Fewer tags Great Lakes Research Vessel Operations 1958-2018: Gillnet. (ver. 3.0, April 2019) All gillnet data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Gillnet Tables contain data collected from the research vessel deploying various gear used for gillnet data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Gillnet are: GN_Annulus.csv, GN_Catch.csv, GN_Effort.csv, GN_Fish.csv, GN_L, GN_LF.csv, GN_OP.csv, GN_Prey.csv, GN_Stomach.csv, LMMB_Fish_Prey.csv, and LMMB_Invert_Prey.csv Data Quality: Note that the following data release is a snapshot of the database at the time of release. Some data quality checks are still being... Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags Lethality of bloom forming cyanobacteria on zebra and quagga mussel veligers collected from the Detroit River Zebra and quagga mussel veligers were exposed to eleven distinct cultures (isolates) of cyanobacteria representing Anabaena, Aphanizomenon, Dolichospermum, Microcystis, and Planktothrix species and the cyanotoxin microcystin to determine the lethality of cyanobacteria on dreissenid veligers. Six-day laboratory bioassays were performed in microplates using dreissenid veligers collected from the Detroit River, Michigan, USA. Veligers were exposed to increasing concentrations of cyanobacteria and microcystin using the green algae Chlorella minutissima as a control. Raw data were fit to dose response curves formulated from a Probit model to calculate LC50 values. This data release presents the raw data summarized and... Categories: Data; Tags: Aquatic Biology, Belle Isle, Detroit, Detroit River, Ecology, All tags... Environmental Health, Great Lakes, Michigan, USGS Science Data Catalog (SDC), Water Quality, Water Resources, aquatic biology, developmental biology, environment, invasive species, Fewer tags Zooplankton, Benthos, Mysis, and fish diet data from northern Lake Huron in 2012 These data consist of a multi-trophic, day vs. night, nearshore to offshore transect approach for data collection for this Cooperative Science and Monitoring Initiative effort at two northwestern Lake Huron sites near Hammond Bay and Thunder Bay, Michigan. Zooplankton and Mysis samples were collected monthly from April-October while benthos and prey fish samples were collected seasonally during Spring, Summer, and Fall. Invertebrate taxa (zooplankton, Mysis, benthic macroinvertebrates) were identified, enumerated, and measured using a dissecting microscope. Diet items of the prey fish were processed similarly to the other samples in terms of taxonomy. These data were used to calculate densities of fish prey items... Categories: Data; Tags: Aquatic Biology, Ecology, Geography, Lake Huron, Limnology, All tags... Northwestern Lake Huron, USGS Science Data Catalog (SDC), Zooplankton, aquatic ecosystems, biota, community ecology, environment, fisheries biology, food web, inlandWaters, population and community ecology, Fewer tags Great Lakes Research Vessel Operations 1958-2018: Mensuration. (ver. 3.0, April 2019) All mensuration data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Mensuration Tables contain data collected from the research vessel deploying various gear used for mensuration data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Mensuration are: Mensuration.csv, MS_head_rope_depth.csv, MS_FOOT_ROPE_DEPTH, MS_Primary.csv, MS_Temperature.csv, and MS_Wingspread.csv Data Quality: Note that the following data release is a snapshot of the database at the time of release. Some data quality checks are still being undertaken after the time... Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags Historical Ice Breakup Dates for Chequamegon Bay, Lake Superior, 1911 to 2021 (ver. 4.0, June 2021) Note: this data release has been superseded by version 5.0, available here: https://doi.org/10.5066/F7HT2NNP Ice breakup dates of Chequamegon Bay, Lake Superior from 1911 to 2021 were compiled by Lori Evrard (USGS, GLSC, Lake Superior Biological Station, Ashland, WI). Ice breakup date is the day in spring when winter ice cover substantially leaves a water body. Local residents deem "ice breakup" as when the ice moves northeast of a line straight across Chequamegon Bay out from Ellis Avenue (State highway 13). Another way ice breakup was determined has been if you could drive a boat from the outlet of Fish Creek to Houghton Point. The ice may move back and forth over that line but the ice is breaking up, moving... Categories: Data, Data Release - Revised; Tags: Ashland, Chequamegon Bay, Climatology, Great Lakes, Lake Superior, All tags... Wisconsin, bays, climatologyMeteorologyAtmosphere, lake ice, snow and ice cover, time series datasets, Fewer tags Cladophora biomass and supporting data collected in the Great Lakes, 2019 (ver. 2.0, December 2023) This dataset records Cladophora and associated submerged aquatic vegetation (SAV) biomass collected approximately monthly during the growing season of 2019 at stations located along the U.S. shoreline of Lakes Michigan, Huron, Erie, and Ontario. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data include: - seasonal time series of light, currents, wave action, temperature, specific conductivity, turbidity, pH, phycocyanin, chlorophyll, and dissolved oxygen from moored sensors at a subset of stations; - measurements of Secchi disk depth and water chemistry; - water column profiles of temperature, specific conductivity, turbidity, pH, phycocyanin, chlorophyll,... Categories: Data, Data Release - Revised; Tags: CTD measurement, Great Lakes Region, Lake Erie, Lake Huron, Lake Michigan, All tags... Lake Ontario, USGS Science Data Catalog (SDC), acoustic Doppler current profiling, algae, algal blooms, aquatic biology, aquatic vegetation, benthos, biota, environment, eutrophication, freshwater ecosystems, habitat alteration and disturbance, inlandWaters, invasive species, mollusks, nuisance species, nutrient content (water), optical methods, oxygen content (water), phosphorus, submerged aquatic vegetation, surface water quality, suspended material (water), turbidity, water pH, water sampling, water temperature, Fewer tags Juvenile Salmonid Densities in Orwell Brook and Trout Brook, New York 2014-2023 Individual point estimates of stream density by juvenile salmonid species in two small tributaries to the Salmon River, Lake Ontario, New York were recorded. Enumeration of salmonid species was observed using a backpack electrofisher in order to identify fish species. Stream density estimates were calculated using stream width measurements taken at equally spaced transects. Comparisons of species densities between the two streams were analyzed to infer competition or segregation. Categories: Data; Tags: Aquatic Biology, Atlantic Salmon, Brook Trout, Brown Trout, Chinook Salmon, All tags... Coho Salmon, Ecology, Lake Ontario, New York, Oncorhynchus kisutch, Oncorhynchus mykiss, Oncorhynchus tshaytscha, Orwell Brook, Oswego County, Rainbow Trout, Salmo salar, Salmo trutta, Salvelinus fontinalis, Trout Brook, USGS Science Data Catalog (SDC), biota, community ecology, Fewer tags Western Lake Erie Restoration Assessment Dikes (2016) This dataset is the output of a python script/ArcGIS model that identifes dikes as having a difference in elevation above a certain threshold. If the elevation difference was below a certain threshold the area was not considered a dike; however, if the difference in elevation between two points was significantly high then the area was marked as a dike. Areas continuous with eachother were considered part of the same dike. Post processing occured. Users examined the data output, comparing the proposed dike locations to aerial imagery, flowline data, and the DEM. Dikes that appeared to be false positives were deleted from the data set. These data include parameter inputs from external sources current to 2016. For... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Great Lakes, LIDAR, Lake Erie, biogeography, coastal ecosystems, All tags... coastal processes, connectivity, decision support methods, digital elevation models, dikes, drainage, ecological processes, environmental assessment, estuarine ecosystems, estuarine processes, freshwater ecosystems, geodesign, geographic information systems, geography, geospatial analysis, geospatial datasets, habitats, hydrographic datasets, interagency programs, land use change, restoration, surface-water level, water resources, wetland ecosystems, wetland functions, Fewer tags 2010-2017 zooplankton data from whole water-column tows in Lakes Michigan and Huron This data release includes zooplankton data collected from a collaborative effort for Environmental Protection Agency’s Cooperative Science and Monitoring Initiative (CSMI). Zooplankton surveys were conducted during the growing season, from late April to early November, in two Lake Michigan transects in 2010, two Lake Huron transects in 2012, eight Lake Michigan transects in 2015, and nine Lake Huron transects in 2017. Zooplankton samples were collected by whole water-column tows at two or three stations in different bottom-depth categories (i.e., shallow, middle, and deep) in each of the transects. Due to the difference in bathymetry, some transects did not have a deep station. The shallow and middle stations have... Categories: Data; Tags: Ecology, Lake Huron, Lake Michigan, Limnology, USGS Science Data Catalog (SDC), All tags... Zooplankton, biota, community ecology, environment, freshwater ecosystems, inland fishery resources, inlandWaters, Fewer tags Cladophora biomass and supporting data collected in the Great Lakes, 2021 This dataset records Cladophora and associated benthic algae, collectively Cladophora community or submerged aquatic vegetation (SAV), biomass collected during the growing season of 2021 at stations located along the U.S. shoreline of Lakes Michigan, Huron, Erie, and Ontario. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data include: - seasonal time series of light, currents, wave action, temperature, specific conductivity, turbidity, pH, phycocyanin, chlorophyll, and dissolved oxygen from moored sensors at a subset of stations; - measurements of Secchi disk depth and water chemistry; - water column profiles of PAR, temperature, specific conductivity,... Categories: Data; Tags: Aquatic Biology, CTD measurement, Ecology, Great Lakes Region, Lake Erie, All tags... Lake Huron, Lake Michigan, Lake Ontario, Limnology, USGS Science Data Catalog (SDC), Water Quality, algae, algal blooms, aquatic biology, aquatic vegetation, benthos, biota, environment, eutrophication, field sampling, freshwater ecosystems, habitat alteration and disturbance, inlandWaters, invasive species, mollusks, nuisance species, nutrient content (water), optical methods, oxygen content (water), phosphorus, submerged aquatic vegetation, surface water quality, suspended material (water), turbidity, water pH, water sampling, water temperature, Fewer tags Connecting River Systems Restoration Assessment Dikes (2016) This dataset is the output of a python script/ArcGIS model that identifes dikes as having a difference in elevation above a certain threshold. If the elevation difference was below a certain threshold the area was not considered a dike; however, if the difference in elevation between two points was significantly high then the area was marked as a dike. Areas continuous with eachother were considered part of the same dike. Post processing occured. Users examined the data output, comparing the proposed dike locations to aerial imagery, flowline data, and the DEM. Dikes that appeared to be false positives were deleted from the data set. These data include parameter inputs from external sources current to 2016. For... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Detroit River, Great Lakes, LIDAR, Lake St. Clair, St. Clair River, All tags... biogeography, coastal ecosystems, coastal processes, connectivity, decision support methods, digital elevation models, dikes, drainage, ecological processes, environmental assessment, estuarine ecosystems, estuarine processes, freshwater ecosystems, geodesign, geographic information systems, geography, geospatial analysis, geospatial datasets, habitats, hydrographic datasets, interagency programs, land use change, restoration, surface-water level, water resources, wetland ecosystems, wetland functions, Fewer tags Quagga mussel spawning and fertilization success in laboratory bioassays under exposure to cyanobacteria, 2014-2016 Laboratory bioassays were conducted between 2014-2016 at Wayne State University in cooperation with USGS to determine if different species of cyanobacteria influence quagga mussel spawning and fertilization success. The data describes the algal cultures tested and their density/concentration, the number of individuals tested, and the spawning and fertilization success of quagga mussels exposed to the cyanobacteria and those that were not (control). Categories: Data; Tags: Algae, Bivalvia, Cyanobacteria, Detroit River, Dreissena bugensis, All tags... Invasive species, Reproduction, USGS Science Data Catalog (SDC), biota, Fewer tags Lake Erie Ecological Investigations 1980-2000: Sediment Analysis This Sediment Analysis dataset, a conceptual subgroup of the Lake Erie Ecological Investigations (LEEI) dataset, focuses on the sediments sampled at Areas of Concern (AOCs) on Lake Erie. Per the Quality Assurance Project Plan (QAPP), sediment collections were a composite of at least five randomly selected samples collected from each site. Per an internal summary report, sediment samples were collected using a stainless steel Eckman dredge. Analytical methods and QA/QC were directed by the Patuxent Analytical Control Facility (PACF) of the US Fish and Wildlife Service. Per Dora Passino-Reader, the Geochemical & Environmental Research Group at Texas A&M University, College Station performed the analytical chemistry... Categories: Data; Tags: AOCs, Ameiurus nebulosus, Ashtabula, Ashtabula River, Black River, All tags... Black River, Buffalo, Buffalo River, Cleveland Harbor, Cleveland Harbor, Cuyahoga River, Cuyahoga River, Detroit, Detroit River, Detroit River, Great Lakes, Great Lakes, Great Lakes, Great Lakes Areas of Concern, Huron River, Lake Erie, Lake Erie, Lake Erie, Lake or marine sediment, Love Canal (historical), Maumee River, Michigan, Michigan, Mud Brook, Mud Brook, New York, New York, Niagara River, Niagara River, Ohio, Ohio, Old River, Old Woman Creek, Old Woman Creek, Ottawa River, PAHs, PCBs, Pennsylvania, Pennsylvania, Presque Isle Bay, Presque Isle Bay, aquatic ecosystems, benthos, benthos, biomarkers, biota, brown bullhead, contamination and pollution, datasets, ecotoxicology, environment, field sampling, fish, fish, freshwater ecosystems, heavy metal pollution, histology, industrial pollution, inlandWaters, invertebrates, invertebrates, liver tumors, metal elements, pathology, pesticide and herbicide contamination, plant and animal testing, polyaromatic hydrocarbons, polychlorinated biphenyls, population and community ecology, remediation, sediment, sediment analysis, species diversity, specimen collecting, toxic trace element contamination, water resources, Fewer tags Total thiamine concentrations in lake trout Salvelinus namaycush eggs in lakes Huron and Michigan, 1996-2018 Monitoring of vitamin B1 (thiamine) in the eggs of lake trout (Salvelinus namaycush) collected from lakes Huron and Michigan has been conducted by the U.S. Geological Survey since the mid-1990’s. The results of this monitoring effort have been used by natural resource management agencies and native American tribes within the Great Lakes basin to evaluate the reproductive health of lake trout. The data in this release are the thiamine concentrations measured in lake trout collected from 1996-2018. Results are reported as total thiamine (nmol/g-egg), collection site, lake, year collected, and reference to the analysis methods. Categories: Data; Tags: Canada, EMS, Early Mortality Syndrome, Fish, Fish Spawning and Larval Aggregation, All tags... Great Lakes, Illinois, Indiana, Lake Huron, Lake Michigan, Laurentian Great Lakes, Michigan, Ontario, Salvelinus namaycush, TDC, Thiamine Deficiency Complex, USGS Science Data Catalog (SDC), United States, Vitamin B1, Wildlife Biology, Wisconsin, alewife, aquatic biology, aquatic ecosystems, biota, commercial fishery resources, ecosystem monitoring, environmental assessment, fish, fisheries biology, fishery management, freshwater ecosystems, hazards, health and disease, inland fishery resources, lake trout, long-term ecological monitoring, population and community ecology, recreational fishery resources, risk assessment, thiamine, thiamine deficiency, vitamin deficiency, wildlife disease, Fewer tags Pre-restoration biological and physical assessment of the lower Rouge River, MI, 2018 Data are from biological and physical environmental assessments conducted during 2018 in the lower Rouge River, MI. Sites were located upstream, downstream, and within the concrete channel section of the lower Rouge River. Water quality parameters, riparian zone characteristics, reptiles and amphibians, fishes, invertebrates, and river channel characteristics (water depth, flow, velocity) were assessed during 2018 from June-October. Previously established standardized sampling methods were used during all assessments. Categories: Data; Tags: Aquatic Biology, Benthos, Ecology, Michigan, River Rouge, All tags... Rouge River, USGS Science Data Catalog (SDC), Water Quality, Water Resources, acoustic doppler current profiling, amphibians, biota, environment, environmental assessment, fish, macrophytes, reptiles, Fewer tags Historical Ice Breakup Dates for Chequamegon Bay, Lake Superior, 1911 to 2020 (ver. 3.0, June 2020) Note: this data release has been superseded by version 4.0, available here: https://doi.org/10.5066/F7HT2NNP. Ice breakup dates of Chequamegon Bay, Lake Superior from 1911 to 2020 were compiled by Lori Evrard (USGS, GLSC, Lake Superior Biological Station, Ashland, WI). Ice breakup date is the day in spring when winter ice cover substantially leaves a water body. Local residents deem "ice breakup" as when the ice moves northeast of a line straight across Chequamegon Bay out from Ellis Avenue (State highway 13). Another way ice breakup was determined has been if you could drive a boat from the outlet of Fish Creek to Houghton Point. The ice may move back and forth over that line but the ice is breaking up, moving... Categories: Data, Data Release - Revised; Tags: Ashland, Chequamegon Bay, Climatology, Great Lakes, Lake Superior, All tags... Lake Superior, bays, climatologyMeteorologyAtmosphere, lake ice, Fewer tags Fisheries-dependent data for Cisco in Green Bay of Lake Michigan and Saginaw Bay of Lake Huron between 1929 and 1970 This data release presents part of historical fisheries-dependent data for Cisco (Coregonus artedi) in Green Bay of Lake Michigan and Saginaw Bay of Lake Huron collected by scientists from U.S. Geological Survey's Great Lakes Science Center, including three tables for monthly Cisco-catch and fishing-effort data and two tables for biological data of Cisco individuals. The monthly Cisco-catch and fishing-effort data tables are for small-mesh gill-net fisheries in Green Bay and Saginaw Bay (GBSB_GN.csv), pound-net fisheries in Green Bay and Saginaw Bay (GBSB_PD.csv), and shallow trap-net fishery in Saginaw Bay (SB_ST.csv) in the period 1929–1970. The biological data of Cisco individuals are from historical Saginaw... Categories: Data; Tags: Ecology, Great Lakes, Lake Huron, Lake Michigan, Limnology, All tags... USGS Science Data Catalog (SDC), Water Resources, bay, biota, commercial fishery resources, commercial fishing, environment, extinction and extirpation, fishery management, freshwater ecosystems, inland fishery resources, inlandWaters, population dynamics, Fewer tags 1 2 3 4 »