Cuyahoga River at Independence OH - river section submerged
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Cuyahoga River at Independence OH
Cuyahoga River at Independence OH - river section submerged
Cuyahoga River at Independence OH - downstream from bridge
Cuyahoga River at Independence OH - downstream from bridgeCuyahoga River at Independence OH - downstream from bridge
Cuyahoga River at Independence OH - downstream from bridge
Cuyahoga River at Independence OH - downstream from bridgeCuyahoga River at Independence OH - downstream from bridge
Grey Tree Frog
Grey Tree Frog
Houghton Lake Michigan frozen and cracked
West-side of Houghton Lake during winter when frozen showing pressure cracks in ice.
West-side of Houghton Lake during winter when frozen showing pressure cracks in ice.
Leafcutter Bee at Indiana Dunes National Lakeshore
Leafcutter Bee at Indiana Dunes National LakeshoreThis native leafcutter bee, Trachusa zebratum, is a solitary bee species associated with sandy soils where the female builds her own nest to lay her eggs in.
Leafcutter Bee at Indiana Dunes National Lakeshore
Leafcutter Bee at Indiana Dunes National LakeshoreThis native leafcutter bee, Trachusa zebratum, is a solitary bee species associated with sandy soils where the female builds her own nest to lay her eggs in.
A Cuckoo Bee at Indiana Dunes National Lakeshore
This cuckoo bee, or Nomada vegana, is a native bee species associated with open grassland habitats in northwest Indiana. It is a parasitic bee that lays its eggs in nests of other bees.
This cuckoo bee, or Nomada vegana, is a native bee species associated with open grassland habitats in northwest Indiana. It is a parasitic bee that lays its eggs in nests of other bees.
Sundew Plant Indiana Dunes National Lakeshore
A Sundew plant taken at the Indiana Dunes National Lakeshore, Indiana
A Sundew plant taken at the Indiana Dunes National Lakeshore, Indiana
Black sealcoat contrasts with unsealcoated asphalt on parking lot
Black sealcoat contrasts with unsealcoated asphalt on parking lotSealcoat, marketed to protect and beautify the underlying asphalt, sharply contrasts here with the light gray of unsealcoated asphalt pavement. Read more about coal-tar-based sealcoat and PAHs here.
Black sealcoat contrasts with unsealcoated asphalt on parking lot
Black sealcoat contrasts with unsealcoated asphalt on parking lotSealcoat, marketed to protect and beautify the underlying asphalt, sharply contrasts here with the light gray of unsealcoated asphalt pavement. Read more about coal-tar-based sealcoat and PAHs here.
Worn sealcoat around a storm drain.
Coal-tar-based sealcoat, a potent source of polycyclic aromatic hydrocarbons (PAHs), abrades into fine particles with time. Here, runoff containing abraded particles goes down a storm drain and is delivered to a nearby lake. Read more about coal-tar-based sealcoat and PAHs here.
Coal-tar-based sealcoat, a potent source of polycyclic aromatic hydrocarbons (PAHs), abrades into fine particles with time. Here, runoff containing abraded particles goes down a storm drain and is delivered to a nearby lake. Read more about coal-tar-based sealcoat and PAHs here.
Sealcoat wear indicated by bare asphalt patches
The abrasive action of car tires and snow plows causes sealcoat to wear off. Here, light-colored patches indicate where the sealcoat has worn off and the underlying asphalt shows through.
The abrasive action of car tires and snow plows causes sealcoat to wear off. Here, light-colored patches indicate where the sealcoat has worn off and the underlying asphalt shows through.
Black newly applied sealcoat contrasts with unsealed asphalt
Black newly applied sealcoat contrasts with unsealed asphaltNewly applied coal-tar-based sealcoat is dark black, sharply contrasting with the unsealed asphalt parking lot below. Coal-tar-based sealcoat is a potent source of polycyclic aromatic hydrocarbons (PAHs).
Black newly applied sealcoat contrasts with unsealed asphalt
Black newly applied sealcoat contrasts with unsealed asphaltNewly applied coal-tar-based sealcoat is dark black, sharply contrasting with the unsealed asphalt parking lot below. Coal-tar-based sealcoat is a potent source of polycyclic aromatic hydrocarbons (PAHs).
Worn sealcoat in Milwaukee, WI
Coal-tar-based sealcoat, a potent source of polycyclic aromatic hydrocarbons (PAHs), abrades into fine particles with time. Here, runoff containing abraded particles goes down a storm drain and is delivered to a nearby lake. Read more about coal-tar-based sealcoat and PAHs here.
Coal-tar-based sealcoat, a potent source of polycyclic aromatic hydrocarbons (PAHs), abrades into fine particles with time. Here, runoff containing abraded particles goes down a storm drain and is delivered to a nearby lake. Read more about coal-tar-based sealcoat and PAHs here.
Two mini SPMDs prior to deployment
Two passive samplers (mini Semi-Permeable Membrane Devices or “SPMDs”) prior to a onemonth deployment for measurement of organic contaminants.
Two passive samplers (mini Semi-Permeable Membrane Devices or “SPMDs”) prior to a onemonth deployment for measurement of organic contaminants.
Pitcher Plants at Indiana Dunes National Lakeshore
Pitcher Plants at Indiana Dunes National LakeshorePitcher Plants at Indiana Dunes National Lakeshore.
Pitcher Plants at Indiana Dunes National Lakeshore
Pitcher Plants at Indiana Dunes National LakeshorePitcher Plants at Indiana Dunes National Lakeshore.
Tagged lamprey in a stream
A tagged sea lamprey used in our sterile male program is seen attached to a rock in a tributary to Lake Huron.
A tagged sea lamprey used in our sterile male program is seen attached to a rock in a tributary to Lake Huron.
Lake Sturgeon in the water
Lake Sturgeon in the Detroit River, 2003.
Lake Sturgeon in the Detroit River, 2003.
USGS Scientist Mark Roth listening to frog calls.
USGS Scientist Mark Roth listening to frog calls. Coolecting frog calls allows scientists to determine distribution of species.
USGS Scientist Mark Roth listening to frog calls. Coolecting frog calls allows scientists to determine distribution of species.
A Landsat Mosaic for Indiana’s Bicentennial
This satellite mosaic of the Hoosier State was created from several Landsat scenes stitched together to create one seamless image. Data from the National Elevation Dataset (NED) is also incorporated into the image. The names of major cities and county boundaries have been added.
This satellite mosaic of the Hoosier State was created from several Landsat scenes stitched together to create one seamless image. Data from the National Elevation Dataset (NED) is also incorporated into the image. The names of major cities and county boundaries have been added.
Best management practices of agricultural streams
Effective best management practices have been shown to reduce the transport of sediment, nutrients, herbicides, and pesticides from agriculture to waterways.
Effective best management practices have been shown to reduce the transport of sediment, nutrients, herbicides, and pesticides from agriculture to waterways.
USGS Scientist Kevin Kenow looks out over lake at dawn.
USGS Scientist Kevin Kenow looks out over lake at dawn.USGS Scientist Kevin Kenow looks out over lake at dawn.
USGS Scientist Kevin Kenow looks out over lake at dawn.
USGS Scientist Kevin Kenow looks out over lake at dawn.USGS Scientist Kevin Kenow looks out over lake at dawn.
Upper Midwest Environmental Sciences Center
Upper Midwest Environmental Sciences Center
Upper Midwest Environmental Sciences Center