Overhead view of technician collecting a water sample in winter
Overhead view of technician collecting a water sample in winterOverhead view of technician collecting a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin.
Owen M Stefaniak
Owen Stefaniak is a Physical Scientist with the Upper Midwest Water Science Center.
Science and Products
Evaluating the impacts of aircraft deicers in runoff from General Mitchell International Airport, Milwaukee, Wis.
Chemicals used to deice planes at General Mitchell International Airport in Milwaukee may be entering nearby streams in concentrations that may be harmful to aquatic life. This project will investigate the toxicity of decing chemicals, evaluate their impact on receiving streams, and assess changes in water quality in response to the implementation of deicer management at General Mitchell Airport.
Overhead view of technician collecting a water sample in winter
Overhead view of technician collecting a water sample in winter
Overhead view of technician collecting a water sample in winterOverhead view of technician collecting a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin.
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, Wisconsin
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, WisconsinPhysical Scientist Owen Stefaniak collects a surface water grab sample for chloride analysis while a multiparameter sonde takes a water quality measurement near the upstream Infall site near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, Wisconsin
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, WisconsinPhysical Scientist Owen Stefaniak collects a surface water grab sample for chloride analysis while a multiparameter sonde takes a water quality measurement near the upstream Infall site near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Streamgage station in winter in Milwaukee, Wisconsin
Streamgage station in winter in Milwaukee, WisconsinOne of four streamgaging stations with autosamplers used in study to detect phosphorus in receiving waters from airport deicer runuff.
Streamgage station in winter in Milwaukee, Wisconsin
Streamgage station in winter in Milwaukee, WisconsinOne of four streamgaging stations with autosamplers used in study to detect phosphorus in receiving waters from airport deicer runuff.
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak collects a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence. The airport runway is visible beyond the fence.
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak collects a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence. The airport runway is visible beyond the fence.
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak and Kathryn Johncock collect water samples of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence.
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak and Kathryn Johncock collect water samples of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence.
Deicing an airplane at Milwaukee airport
Two technicians deicing a plane at Milwaukee General Mitchell International Airport in winter. They are applying Type I aircraft deicer (which is orange) to the plane. Type I deicer is typically applied hot (hence the steam) and it is used to remove existing ice and snow. This will then usually be followed with Type IV (which is green) to prevent new ice.
Two technicians deicing a plane at Milwaukee General Mitchell International Airport in winter. They are applying Type I aircraft deicer (which is orange) to the plane. Type I deicer is typically applied hot (hence the steam) and it is used to remove existing ice and snow. This will then usually be followed with Type IV (which is green) to prevent new ice.
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, Wisconsin
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, WisconsinOwen Stefaniak inspects equipment at streamgage 040871473, Wilson Park Creek @ GMIA Infall at Milwaukee, Wisconsin. Wilson Park Creek at Gmia Infall at Milwaukee, WI - USGS Water Data for the Nation.
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, Wisconsin
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, WisconsinOwen Stefaniak inspects equipment at streamgage 040871473, Wilson Park Creek @ GMIA Infall at Milwaukee, Wisconsin. Wilson Park Creek at Gmia Infall at Milwaukee, WI - USGS Water Data for the Nation.
Airplane parked at hangar after deicing
A technician has just finished applying Type IV aircraft anti-icing fluid (which is green) to an airplane parked at a hangar. Anti-icing fluid is applied after the plane has already been deiced and it is used to prevent new ice from forming. Type IV fluid typically shears off the fuselage during takeoff and can be deposited along runways.
A technician has just finished applying Type IV aircraft anti-icing fluid (which is green) to an airplane parked at a hangar. Anti-icing fluid is applied after the plane has already been deiced and it is used to prevent new ice from forming. Type IV fluid typically shears off the fuselage during takeoff and can be deposited along runways.
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, WisconsinUpstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, WisconsinUpstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in background
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in backgroundHydrologic Imagery Visualization and Information System (HIVIS) webcam at Jones' Island Milwaukee, Wisconsin with Hoan Memorial Bridge in background.
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in background
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in backgroundHydrologic Imagery Visualization and Information System (HIVIS) webcam at Jones' Island Milwaukee, Wisconsin with Hoan Memorial Bridge in background.
Science and Products
Evaluating the impacts of aircraft deicers in runoff from General Mitchell International Airport, Milwaukee, Wis.
Chemicals used to deice planes at General Mitchell International Airport in Milwaukee may be entering nearby streams in concentrations that may be harmful to aquatic life. This project will investigate the toxicity of decing chemicals, evaluate their impact on receiving streams, and assess changes in water quality in response to the implementation of deicer management at General Mitchell Airport.
Overhead view of technician collecting a water sample in winter
Overhead view of technician collecting a water sample in winterOverhead view of technician collecting a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin.
Overhead view of technician collecting a water sample in winter
Overhead view of technician collecting a water sample in winterOverhead view of technician collecting a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin.
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, Wisconsin
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, WisconsinPhysical Scientist Owen Stefaniak collects a surface water grab sample for chloride analysis while a multiparameter sonde takes a water quality measurement near the upstream Infall site near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, Wisconsin
Collecting a surface water grab sample for chloride analysis in winter in Milwaukee, WisconsinPhysical Scientist Owen Stefaniak collects a surface water grab sample for chloride analysis while a multiparameter sonde takes a water quality measurement near the upstream Infall site near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Streamgage station in winter in Milwaukee, Wisconsin
Streamgage station in winter in Milwaukee, WisconsinOne of four streamgaging stations with autosamplers used in study to detect phosphorus in receiving waters from airport deicer runuff.
Streamgage station in winter in Milwaukee, Wisconsin
Streamgage station in winter in Milwaukee, WisconsinOne of four streamgaging stations with autosamplers used in study to detect phosphorus in receiving waters from airport deicer runuff.
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak collects a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence. The airport runway is visible beyond the fence.
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Collecting water sample of a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak collects a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence. The airport runway is visible beyond the fence.
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak and Kathryn Johncock collect water samples of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence.
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winter
Two scientists collecting water samples at a tributary of Oak Creek in Milwaukee, Wisconsin in winterOwen Stefaniak and Kathryn Johncock collect water samples of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence.
Deicing an airplane at Milwaukee airport
Two technicians deicing a plane at Milwaukee General Mitchell International Airport in winter. They are applying Type I aircraft deicer (which is orange) to the plane. Type I deicer is typically applied hot (hence the steam) and it is used to remove existing ice and snow. This will then usually be followed with Type IV (which is green) to prevent new ice.
Two technicians deicing a plane at Milwaukee General Mitchell International Airport in winter. They are applying Type I aircraft deicer (which is orange) to the plane. Type I deicer is typically applied hot (hence the steam) and it is used to remove existing ice and snow. This will then usually be followed with Type IV (which is green) to prevent new ice.
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, Wisconsin
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, WisconsinOwen Stefaniak inspects equipment at streamgage 040871473, Wilson Park Creek @ GMIA Infall at Milwaukee, Wisconsin. Wilson Park Creek at Gmia Infall at Milwaukee, WI - USGS Water Data for the Nation.
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, Wisconsin
Inspecting equipment at streamgage 040871473 at Wilson Park Creek in Milwaukee, WisconsinOwen Stefaniak inspects equipment at streamgage 040871473, Wilson Park Creek @ GMIA Infall at Milwaukee, Wisconsin. Wilson Park Creek at Gmia Infall at Milwaukee, WI - USGS Water Data for the Nation.
Airplane parked at hangar after deicing
A technician has just finished applying Type IV aircraft anti-icing fluid (which is green) to an airplane parked at a hangar. Anti-icing fluid is applied after the plane has already been deiced and it is used to prevent new ice from forming. Type IV fluid typically shears off the fuselage during takeoff and can be deposited along runways.
A technician has just finished applying Type IV aircraft anti-icing fluid (which is green) to an airplane parked at a hangar. Anti-icing fluid is applied after the plane has already been deiced and it is used to prevent new ice from forming. Type IV fluid typically shears off the fuselage during takeoff and can be deposited along runways.
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, WisconsinUpstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin
Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, WisconsinUpstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in background
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in backgroundHydrologic Imagery Visualization and Information System (HIVIS) webcam at Jones' Island Milwaukee, Wisconsin with Hoan Memorial Bridge in background.
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in background
HIVIS webcam at Jones Island Milwaukee with Hoan Memorial Bridge in backgroundHydrologic Imagery Visualization and Information System (HIVIS) webcam at Jones' Island Milwaukee, Wisconsin with Hoan Memorial Bridge in background.