Guy is a Supervisory Hydrologist at the New York Water Science Center.
Guy currently serves as the Water Quality Networks Section Chief at the New York Water Science Center. He oversees about 25 scientists located in 3 offices throughout the state. The Section conducts a wide variety of water-quality studies in freshwater and marine environments. Study focus ranges from local projects to national programs and includes high priority topics such as harmful algal blooms and PFAS. In addition, Guy co-leads the North Atlantic and Appalachian Region Harmful Algal Bloom Capability Team.
Guy started with the USGS in 2007 as a student in the Pacific Islands Water Science Center (WSC). After graduating, he transferred to his hometown of Ft. Myers, FL as a Hydrologic Technician in the Florida Integrated Science Center, where he performed a variety of gaging tasks including both SW and GW sites. In 2009, he accepted a position as a Hydrologist in the Kansas WSC. While in Kansas, he conducted a variety of studies, including sediment transport, effects of urban wastewater on receiving streams, sediment oxygen demand, and Harmful Algal Blooms (HABs). After becoming a Supervisory Hydrologist, he led the Sediment Science and Sensor Technology Unit from 2015 to 2018, which consisted of a small cadre of highly motivated hydrologists and hydrologic technicians. His Unit produced numerous publications and data releases, and has successfully conducted logistically complex and unique data collections to answer hydrologic questions of interest. In 2018, Guy transferred to the New York WSC.
Prior to working at USGS, Guy served as a submarine sonar technician in the US Navy from 1993 to 2004. He took part in two Western Pacific deployments aboard USS Honolulu (SSN 718) and four Strategic Deterrence Patrols aboard USS Nevada (SSBN 733 (Blue)). He spent his final tour of duty as an Instructor and Master Training Specialist at the Naval Submarine Training Center, Pearl Harbor, Hawai’i.
Professional Experience
Supervisory Hydrologist at the New York Water Science Center 2018-present.
Supervisory Hydrologist, in the Kansas WSC (Sediment Science and Sensor Technology Unit) from 2015 to 2018
USGS In 2009, as a Hydrologist in the Kansas WSC.
USGS in 2008 as a Hydrologic Technician in the Florida Integrated Science Center
USGS in 2007 as a student in the Pacific Islands Water Science Center (WSC)
US Navy as a submarine sonar technician from 1993 to 2004.
Education and Certifications
MS in Civil Engineering – University of Kansas (2011)
BS in Oceanography – Hawai’i Pacific University (2008)
Science and Products
Field techniques for fluorescence measurements targeting dissolved organic matter, hydrocarbons, and wastewater in environmental waters: Principles and guidelines for instrument selection, operation and maintenance, quality assurance, and data reporting
Field techniques for the determination of algal pigment fluorescence in environmental waters—Principles and guidelines for instrument and sensor selection, operation, quality assurance, and data reporting
The use of algal fluorometers by the U.S. Geological Survey (USGS) has become increasingly common. The basic principles of algal fluorescence, instrument calibration, interferences, data quantification, data interpretation, and quality control are given in Hambrook Berkman and Canova (2007). Much of the guidance given for instrument maintenance, data storage, and quality assurance in Wagner and ot
Technical note—Performance evaluation of the PhytoFind, an in-place phytoplankton classification tool
Technical note—Relative variability of selected turbidity standards and sensors in use by the U.S. Geological Survey
Spatial and temporal variability of nutrients and algae in the Republican River and Milford Lake, Kansas, June through November 2017 and May through November 2018
Spatial and temporal variability of harmful algal blooms in Milford Lake, Kansas, May through November 2016
Water-quality conditions with an emphasis on cyanobacteria and associated toxins and taste-and-odor compounds in the Kansas River, Kansas, July 2012 through September 2016
Quantifying suspended sediment loads delivered to Cheney Reservoir, Kansas: Temporal patterns and management implications
Assessing the potential of reservoir outflow management to reduce sedimentation using continuous turbidity monitoring and reservoir modelling
Water-Resource and Road-Condition Monitoring of Alternative Treatments for Road Deicing
MD-DE-DC WSC Seminar Series
In the pursuit of serving the public world-class science and data through a culture of excellence, our center seminar series is intended to showcase the best of our region's research into our water resources and to promote inter-disciplinary collaborations between federal, state, local governments, academia, and the general public.
Questions? Contact Zach Clifton at zclifton@usgs.gov.
Harmful Algal Bloom monitoring in the Finger Lakes region, New York
Southeastern New York Coastal Monitoring
Laboratory and Field Data for a Performance Evaluation of the PhytoFind, an In-Place Phytoplankton Classification Tool
Phytoplankton tally sheet, including photomicrographs, for samples collected at eleven large river sites throughout the United States, June through September 2017
Phytoplankton data for samples collected at eleven large river sites throughout the United States, June through September 2017
Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at eleven large river sites throughout the United States, June through September 2017
Sediment Oxygen Demand Data for Eastern Kansas Streams, August 2014 through December 2015
Science and Products
- Publications
Field techniques for fluorescence measurements targeting dissolved organic matter, hydrocarbons, and wastewater in environmental waters: Principles and guidelines for instrument selection, operation and maintenance, quality assurance, and data reporting
The use of field deployable fluorescence sensors by the U.S. Geological Survey has become increasingly common for a wide variety of surface water and groundwater investigations. This report addresses field deployable fluorometers that measure the fluorescence response of various substances in water exposed to incident light generated by the sensor. An introduction to the basic principles of fieldField techniques for the determination of algal pigment fluorescence in environmental waters—Principles and guidelines for instrument and sensor selection, operation, quality assurance, and data reporting
The use of algal fluorometers by the U.S. Geological Survey (USGS) has become increasingly common. The basic principles of algal fluorescence, instrument calibration, interferences, data quantification, data interpretation, and quality control are given in Hambrook Berkman and Canova (2007). Much of the guidance given for instrument maintenance, data storage, and quality assurance in Wagner and ot
Technical note—Performance evaluation of the PhytoFind, an in-place phytoplankton classification tool
In 2019, the U.S. Geological Survey evaluated the performance of the Turner Designs, Inc. PhytoFind, an in-place phytoplankton classification tool. The sensor was tested with sample blanks, monoculture and mixed phytoplankton cultures, and turbidity challenges in a laboratory, and was tested on a 120-mile survey of the Caloosahatchee and St. Lucie Rivers in Florida, including Lake Okeechobee. ResuTechnical note—Relative variability of selected turbidity standards and sensors in use by the U.S. Geological Survey
The challenges associated with field measurements of turbidity are well known and result primarily from differences in reported values that depend on instrument design and the resulting need for reporting units that are specific to those designs. A critical challenge for making comparable turbidity measurements is the selection and use of appropriate turbidity standards for sensor calibration. TheSpatial and temporal variability of nutrients and algae in the Republican River and Milford Lake, Kansas, June through November 2017 and May through November 2018
Milford Lake has been listed as impaired and designated hypereutrophic because of excessive nutrient loading, specifically biologically available orthophosphate. It is the largest lake by surface area in Kansas and is a reservoir built for purposes including water supply and recreation. In 2015, the Kansas Department of Health and Environment (KDHE) divided the lake into three zones (Zones A, B, aSpatial and temporal variability of harmful algal blooms in Milford Lake, Kansas, May through November 2016
The U.S. Geological Survey, in cooperation with the Kansas Department of Health and Environment (KDHE), completed a study to quantify the spatial and temporal variability of cyanobacterial blooms in Milford Lake, Kansas, over a range of environmental conditions at various time scales (hours to months). A better understanding of the spatial and temporal variability of cyanobacteria and microcystinWater-quality conditions with an emphasis on cyanobacteria and associated toxins and taste-and-odor compounds in the Kansas River, Kansas, July 2012 through September 2016
Cyanobacteria cause a multitude of water-quality concerns, including the potential to produce toxins and taste-and-odor compounds that may cause substantial economic and public health concerns, and are of particular interest in lakes, reservoirs, and rivers that are used for drinking-water supply. Extensive cyanobacterial blooms typically do not develop in the Kansas River; however, reservoirs inQuantifying suspended sediment loads delivered to Cheney Reservoir, Kansas: Temporal patterns and management implications
Cheney Reservoir, constructed during 1962 to 1965, is the primary water supply for the city of Wichita, the largest city in Kansas. Sediment is an important concern for the reservoir as it degrades water quality and progressively decreases water storage capacity. Long-term data collection provided a unique opportunity to estimate the annual suspended sediment loads for the entire history of the reAssessing the potential of reservoir outflow management to reduce sedimentation using continuous turbidity monitoring and reservoir modelling
In-stream sensors are increasingly deployed as part of ambient water quality-monitoring networks. Temporally dense data from these networks can be used to better understand the transport of constituents through streams, lakes or reservoirs. Data from existing, continuously recording in-stream flow and water quality monitoring stations were coupled with the two-dimensional hydrodynamic CE-QUAL-W2 m - Science
Water-Resource and Road-Condition Monitoring of Alternative Treatments for Road Deicing
Introduction The New York State Department of Transportation (NYSDOT) is evaluating alternative treatments for road deicing with the goal of reducing the impact of this activity on the State’s water resources. The NYSDOT has requested support from the U. S. Geological Survey (USGS) in monitoring the effects of these alternative treatments on the water resources. In the past, the USGS has cooperatMD-DE-DC WSC Seminar Series
In the pursuit of serving the public world-class science and data through a culture of excellence, our center seminar series is intended to showcase the best of our region's research into our water resources and to promote inter-disciplinary collaborations between federal, state, local governments, academia, and the general public.
Questions? Contact Zach Clifton at zclifton@usgs.gov.
Harmful Algal Bloom monitoring in the Finger Lakes region, New York
Background: Harmful algal blooms (HABs) are increasingly a global concern because they pose a threat to human and aquatic ecosystem health and cause economic damages. Cyanobacterial HABs (CyanoHABs) represent a substantial threat to drinking-water supplies, aquatic ecosystem health, and safe recreational uses of freshwater resources in New York. Toxins produced by some species of cyanobacteriaSoutheastern New York Coastal Monitoring
USGS monitoring data for estuary and coastal-ocean sites in the southeastern New York region and links to related projects with more information about coastal flood hazards, water quality, and other topics. The USGS operates the most extensive satellite network of tide-gaging stations in the region, many of which form the backbone of flood-warning systems. The USGS provides current ("real-time")... - Data
Laboratory and Field Data for a Performance Evaluation of the PhytoFind, an In-Place Phytoplankton Classification Tool
This data release presents the laboratory and field results of a performance evaluation conducted on the Turner Designs, Inc., PhytoFind, an in-place phytoplankton classification tool. The laboratory evaluation included tests that were designed to characterize PhytoFind performance under a range of conditions that may affect phytoplankton fluorescence and sensor response. Laboratory tests includedPhytoplankton tally sheet, including photomicrographs, for samples collected at eleven large river sites throughout the United States, June through September 2017
This U.S. Geological Survey (USGS) Data Release provides the phytoplankton tally sheet, including photomicrographs, for samples collected from eleven large river sites throughout the United States, from June through September 2017. All data are raw tallies, not calculated abundances or concentrations. The dataset includes all routine and quality assurance/quality control samples collected as partPhytoplankton data for samples collected at eleven large river sites throughout the United States, June through September 2017
This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from eleven large river sites throughout the United States, from June through September 2017. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National WCyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at eleven large river sites throughout the United States, June through September 2017
This U.S. Geological Survey (USGS) data release provides discretely measured cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected from eleven large river sites throughout the United States, from June through September 2017. Discrete water-quality samples were analyzed for cyanotoxins (anatoxin, cylindrospermopsin, microcystin, and saxitoxin), chlorophyll-a, and cySediment Oxygen Demand Data for Eastern Kansas Streams, August 2014 through December 2015
This U.S. Geological Survey (USGS) Data Release provides data collected from sediment oxygen demand (SOD) deployments conducted at eight stream sites in eastern Kansas during August 2014 through December 2015. Continuous water-quality monitors were used to measure water temperature, dissolved oxygen, pH, specific conductance, turbidity, and total algae (chlorophyll-a and phycocyanin) at thirty sec - Multimedia
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