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Jason Siemion

Jason is a Watershed Researcher in the U.S. Geological Survey’s New York Water Science Center. 

Jason is a graduate of the SUNY College of Environmental Science and Forestry (BS, Water Resources) and SUNY Oneonta (MA, Water Resources).  He currently works in the Watershed Research Section of the U.S. Geological Survey’s N.Y. Water Science Center. Jason’s research focuses on sediment transport and the effects of stream stabilization projects on sediment and turbidity.

Current Projects

2009-Present Turbidity and suspended sediment monitoring in the upper Esopus Creek watershed, Ulster County, NY: Research and monitoring of factors controlling suspended sediment and turbidity, and the effectiveness of sediment and turbidity reduction projects in the upper Esopus Creek and tributaries.

2021-Present Monitoring and evaluation of changes in suspended-sediment concentration and turbidity resulting from the Panther Kill and Wilmot Way stream projects in the Woodland Creek watershed. Research and monitoring of the effects of stream stabilization projects on sediment and turbidity in tributaries to Woodland Creek.

Select Recent Projects

2017-2020 Bed-material transport in the upper Esopus Creek watershed. Testing of bed material transport monitoring methods including traditional sampling, active tracers, passive tracers, and hydrophones.

2010-2014 Suspended sediment and turbidity responses to sediment and turbidity reduction projects in the Beaver Kill, Stony Clove Creek, and Warner Creek watersheds. Monitoring and analysis of the effects of stream stabilization projects in tributaries to the Esopus Creek.

2010-2012 Turbidity and suspended sediment in the upper Esopus Creek watershed. Research and monitoring to quantify concentrations of suspended sediment and turbidity levels, to estimate suspended-sediment loads within the upper Esopus Creek watershed, and to investigate the relations between SSC and turbidity. 

Professional Experience

  • As a Watershed Researcher in the U.S. Geological Survey’s New York Water Science Center.

Education and Certifications

  • MA in Water Resources from SUNY Oneonta

  • BS in Water Resources from SUNY College of Environmental Science and Forestry

Science and Products

link
red dots on map of Catskill region of New York

Upper Esopus Creek Tributary Bedload Pilot Study

Problem Sediment transport is a serious concern in the upper Esopus Creek watershed. The creek is a well-documented source of sediment and turbidity to the Ashokan Reservoir, which is part of the New York City water supply system. During the last 2 decades there has been a series of stream stabilization and sediment reduction projects completed in the upper Esopus Creek watershed...
By
New York Water Science Center
link

Upper Esopus Creek Tributary Bedload Pilot Study

Problem Sediment transport is a serious concern in the upper Esopus Creek watershed. The creek is a well-documented source of sediment and turbidity to the Ashokan Reservoir, which is part of the New York City water supply system. During the last 2 decades there has been a series of stream stabilization and sediment reduction projects completed in the upper Esopus Creek watershed intended to reduc
Learn More
link
white map with black and gray dots

Stony Clove Basin Sediment and Turbidity Monitoring

Problem Suspended-sediment concentration (SSC) and turbidity are primary water-quality concerns in New York City’s (NYC) water-supply system (U.S. Environmental Protection Agency, 2007). In the NYC water-supply system turbidity is largely caused by clay and silt rather than organic material (Effler et al. 1998, Peng et al. 2002, 2004). Sediment can originate from the watershed land...
By
New York Water Science Center
link

Stony Clove Basin Sediment and Turbidity Monitoring

Problem Suspended-sediment concentration (SSC) and turbidity are primary water-quality concerns in New York City’s (NYC) water-supply system (U.S. Environmental Protection Agency, 2007). In the NYC water-supply system turbidity is largely caused by clay and silt rather than organic material (Effler et al. 1998, Peng et al. 2002, 2004). Sediment can originate from the watershed land surface and the
Learn More
link
light gray and dark gray map with black dots

Esopus Creek Sediment and Turbidity Study

Background The Ashokan Reservoir is located in the Catskill Mountains of New York State and is part of New York City’s (NYC) water supply system. The NYC water-supply system is operated by the NYC Department of Environmental Protection (NYCDEP) under a filtration avoidance determination (FAD) issued by the New York State Department of Health. The Ashokan Reservoir watershed is 255 mi2...
By
New York Water Science Center
link

Esopus Creek Sediment and Turbidity Study

Background The Ashokan Reservoir is located in the Catskill Mountains of New York State and is part of New York City’s (NYC) water supply system. The NYC water-supply system is operated by the NYC Department of Environmental Protection (NYCDEP) under a filtration avoidance determination (FAD) issued by the New York State Department of Health. The Ashokan Reservoir watershed is 255 mi2 and is one o
Learn More
link
multicolored topographical map in mountainous area

Assessment of Regional Forest Health and Stream and Soil Chemistry Using a Mulit-Scale Approach and New Methods of Remote Sensing Interpretation in the Catskill Mountains of New York

The overall goal of this project has been the development of forest health and sensitivity indicators and “1st-generation” maps of potential sensitivity to disturbance for lands within watersheds of the NYC water supply in the Catskill Mountains of New York. The methodologies and data layers created in this effort can now be used to aid management decisions and help determine the extent...
By
New York Water Science Center
link

Assessment of Regional Forest Health and Stream and Soil Chemistry Using a Mulit-Scale Approach and New Methods of Remote Sensing Interpretation in the Catskill Mountains of New York

The overall goal of this project has been the development of forest health and sensitivity indicators and “1st-generation” maps of potential sensitivity to disturbance for lands within watersheds of the NYC water supply in the Catskill Mountains of New York. The methodologies and data layers created in this effort can now be used to aid management decisions and help determine the extent and mag
Learn More
link
map of the Upper Delaware River with triangle markers

Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania

Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers...
By
New York Water Science Center
link

Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania

Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers consisting of in
Learn More

Turbidity Data from the Upper Esopus Creek Watershed, New York

This data release contains continuous (15-minute interval) turbidity data from the upper Esopus Creek Watershed in the Catskill Mountain Region of New York State. The upper Esopus watershed drains to the Ashokan Reservoir, part of the New York City (NYC) drinking water supply system. Turbidity is a primary water-quality concern in the NYC water-supply system, particularly in the upper...
By
New York Water Science Center

Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022

The U.S. Geological Survey (USGS), as part of the Next Generation Water Observing System (NGWOS) has collected discrete stream samples for analysis of suspended-sediment concentrations at eight real-time streamflow and water-quality monitoring (turbidity and suspended sediment) stations located in Pennsylvania, New Jersey, and New York in the Delaware River Basin. Data were collected...
By
Pennsylvania Water Science Center

Estimated Streamflow and Suspended-Sediment Loads for Select Sites in the Esopus Creek Watershed, New York (ver. 2.0, September 2024)

This U.S. Geological Survey (USGS) data release contains estimated daily mean streamflow for Broadstreet Hollow Brook at Highway 28 at Allaben NY (USGS station ID 01362232) and Bushnellsville Creek at State Highway 42 at Shandaken NY (USGS station ID 0136219702) based on methods in Gazoorian (2015) and available discharge data from West Kill near West Kill NY (USGS station ID 01349810)...
By
New York Water Science Center

Flood-Frequency Data for Select Sites in the Esopus Creek Watershed, New York

This U.S. Geological Survey (USGS) data release contains batch formatted annual peak streamflow data (PkFlows_AllSites.txt) for the respective periods of record (through the 2020 or 2021 water year) for seven USGS streamgages in the upper Esopus Creek watershed in upstate New York. This data release also contains batch formatted specification (PkFlows_AllSites.psf) and output (PEAKFLOWS...
By
New York Water Science Center, StreamStats

Bed material transport data in the upper Esopus Creek watershed, Ulster and Greene Counties, NY, 2017-2020

The U.S. Geological Survey, in cooperation with Ashokan Watershed Stream Management Program, investigated the feasibility of bedload monitoring in the upper Esopus Creek watershed, Ulster and Greene Counties, New York (NY), from 2017 to 2020. Traditional bedload samples were collected at two locations: Birch Creek at Big Indian, NY, and Stony Clove at Jansen Rd at Lanesville, NY. Active...
By
New York Water Science Center

Suspended-sediment concentration and turbidity data for sites in the upper Esopus Creek watershed New York, 2016-19

The upper Esopus Creek is the primary tributary to the Ashokan Reservoir, part of the New York City (NYC) water supply system. Suspended-sediment concentration (ssc) and turbidity are primary water-quality concerns in the NYC water-supply system, particularly in the upper Esopus Creek watershed. In 2016 the NYC Department of Environmental Protection and U.S. Geological Survey entered...
By
New York Water Science Center

Northeastern Hydrologic Benchmark Network (HBN) Soil Chemistry and Catskill Mountain Water-Quality Data

This data product contains soil chemistry data from 4 locations. Two of the locations were located in the Neversink River watershed near Claryville, NY (01435000) in the Catskill Mountains of New York (Fall Brook and Winnisook Creek), 1 of the locations was the Young Womans Creek watershed near Renovo, PA (01545600) and the last site was the Wild River watershed at Gilead, Maine...
By
New York Water Science Center
Filter Total Items: 18

Leveraging high-frequency sensor data and U.S. National Water Model output to forecast turbidity in a drinking water supply basin

As high-frequency sensor networks increasingly enhance data-driven models of water quality, process-based models like the U.S. National Water Model (NWM) are generating accessible forecasts of streamflow at increasingly dense scales. There is now an opportunity to combine these products to construct actionable water quality forecasts. To that end, we couple streamflow forecasts from the...
Authors
John T. Kemper, Kristen L. Underwood, Scott Douglas Hamshaw, Dany Davis, Jason Siemion, James B. Shanley, Andrew W. Schroth
By
Water Resources Mission Area

Effects of a large flood on sediment and turbidity reduction projects in the Esopus Creek watershed, NY

On December 24-25, 2020, 7.3 to 14.6 cm of rain fell on a large snowpack in the upper Esopus Creek (UEC) watershed in the Catskill Mountains of New York. The resulting flood had an annual exceedance probability (AEP) of 4 to 20% (recurrence intervals of 25 to 5 years) in streams across the watershed, resulted in substantial geomorphic adjustments in some stream channels, and transported...
Authors
Jason Siemion, Wae D. Davis, Donald B. Bonville
By
Water Resources Mission Area, New York Water Science Center

Bed-material transport in the upper Esopus Creek watershed, Ulster and Greene Counties, New York, 2017–20

The U.S. Geological Survey, in cooperation with the Ashokan Watershed Stream Management Program, investigated the feasibility of bedload monitoring in the upper Esopus Creek watershed, Ulster and Greene Counties, New York, from 2017 to 2020. Traditional bedload samples were collected at two locations: Birch Creek at Big Indian, New York (station 013621955), and Stony Clove Creek at...
Authors
Jason Siemion, Michael R. Antidormi, Donald B. Bonville, Jason S. Finkelstein, Mathieu D. Marineau
By
Water Resources Mission Area, New York Water Science Center

The water quality of selected streams in the Catskill and Delaware water-supply watersheds in New York, 1999–2009

From October 1, 1999, through September 30, 2009, water-quality samples were collected, and discharge was measured at 13 streamgages within the Catskill and Delaware watersheds of the New York City water supply system. The Catskill and Delaware watersheds supply about 90 percent of the water needed by 9 million customers. On average, 59 water-quality samples were collected at each...
Authors
Michael R. McHale, Jason Siemion, Peter S. Murdoch
By
Water Resources Mission Area, New York Water Science Center

Turbidity–suspended-sediment concentration regression equations for monitoring stations in the upper Esopus Creek watershed, Ulster County, New York, 2016–19

Upper Esopus Creek is the primary tributary to the Ashokan Reservoir, part of the New York City water-supply system. Elevated concentrations of suspended sediment and turbidity in the watershed of the creek are of concern for the system.Water samples were collected through a range of streamflow and turbidity at 14 monitoring sites in the upper Esopus Creek watershed for analyses of...
Authors
Jason Siemion, Donald B. Bonville, Michael R. McHale, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

The Biscuit Brook and Neversink Reservoir Watersheds: Long-term investigations of stream chemistry, soil chemistry, and aquatic ecology in the Catskill Mountains, New York, USA, 1983 to 2020

This data note describes the Biscuit Brook and Neversink Reservoir watershed Long-Term Monitoring Data that includes: 1) stream discharge, (1983 – 2020 for Biscuit Brook and 1937 – 2020 for the Neversink Reservoir watershed), 2) stream water chemistry, 1983-2020, at 4 stations, 3) fish survey data from 16 locations in the watershed 1990-2019, 4) soil chemistry data from 2 headwater sub...
Authors
Peter S. Murdoch, Douglas A. Burns, Michael McHale, Jason Siemion, Barry P. Baldigo, Gregory B. Lawrence, Scott D. George, Michael R. Antidormi, Donald B. Bonville
By
Water Resources Mission Area, New York Water Science Center

Have sustained acidic deposition decreases led to increased calcium availability in recovering watersheds of the Adirondack region of New York, USA?

Soil calcium depletion has been strongly linked to acidic deposition in eastern North America and recent studies have begun to document the recovery of soils in response to large decreases in acidic deposition. However, increased calcium availability has not yet been seen in the B horizon, where calcium depletion has been most acute, but mineral weathering is critically important for...
Authors
Gregory B. Lawrence, Jason Siemion, Michael R. Antidormi, Donald B. Bonville, Michael McHale
By
Water Resources Mission Area, New York Water Science Center

Response of water chemistry and young-of-year brook trout to channel and watershed liming in streams showing lagging recovery from acidic deposition

Reductions in sulfur emissions have initiated chemical recovery of surface waters impacted by acidic deposition in the Adirondack region of New York State. However, acidified streams remain common in the region, which limits recovery of brook trout (Salvelinus fontinalis) populations. To investigate liming as a method to accelerate recovery of brook trout, the channels of two acidified...
Authors
Daniel C Josephson, Gregory B. Lawrence, Scott D. George, Jason Siemion, Barry P. Baldigo, Clifford E. Kraft
By
Water Resources Mission Area, New York Water Science Center

Long-term changes in soil and stream chemistry across an acid deposition gradient in the northeastern United States

Declines in acidic deposition across Europe and North America have led to decreases in surface water acidity and signs of chemical recovery of soils from acidification. To better understand the link between recovery of soils and surface waters, chemical trends in precipitation, soils, and streamwater were investigated in three watersheds representing a depositional gradient from high to...
Authors
Jason Siemion, Michael McHale, Gregory B. Lawrence, Douglas A. Burns, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

The response of soil and stream chemistry to decreases in acid deposition in the Catskill Mountains, New York, USA

The Catskill Mountains have been adversely impacted by decades of acid deposition, however, since the early 1990s, levels have decreased sharply as a result of decreases in emissions of sulfur dioxide and nitrogen oxides. This study examines trends in acid deposition, stream-water chemistry, and soil chemistry in the southeastern Catskill Mountains. We measured significant reductions in...
Authors
Michael McHale, Douglas A. Burns, Jason Siemion, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

Suspended-sediment and turbidity responses to sediment and turbidity reduction projects in the Beaver Kill, Stony Clove Creek, and Warner Creek Watersheds, New York, 2010–14

Suspended-sediment concentrations (SSCs) and turbidity were monitored within the Beaver Kill, Stony Clove Creek, and Warner Creek tributaries to the upper Esopus Creek in New York, the main source of water to the Ashokan Reservoir, from October 1, 2010, through September 30, 2014. The purpose of the monitoring was to determine the effects of suspended-sediment and turbidity reduction...
Authors
Jason Siemion, Michael R. McHale, Wae Danyelle Davis
By
Water Resources Mission Area, New York Water Science Center

Methods of soil resampling to monitor changes in the chemical concentrations of forest soils

Recent soils research has shown that important chemical soil characteristics can change in less than a decade, often the result of broad environmental changes. Repeated sampling to monitor these changes in forest soils is a relatively new practice that is not well documented in the literature and has only recently been broadly embraced by the scientific community. The objective of this...
Authors
Gregory B. Lawrence, Ivan J. Fernandez, Paul W. Hazlett, Scott W. Bailey, Donald S. Ross, Thomas R. Villars, Angelica Quintana, Rock Ouimet, Michael McHale, Chris E. Johnson, Russell D. Briggs, Robert A. Colter, Jason Siemion, Olivia L. Bartlett, Olga Vargas, Michael R. Antidormi, Mary Margaret Koppers
By
Water Resources Mission Area, New York Water Science Center

Science and Products

link
red dots on map of Catskill region of New York

Upper Esopus Creek Tributary Bedload Pilot Study

Problem Sediment transport is a serious concern in the upper Esopus Creek watershed. The creek is a well-documented source of sediment and turbidity to the Ashokan Reservoir, which is part of the New York City water supply system. During the last 2 decades there has been a series of stream stabilization and sediment reduction projects completed in the upper Esopus Creek watershed...
By
New York Water Science Center
link

Upper Esopus Creek Tributary Bedload Pilot Study

Problem Sediment transport is a serious concern in the upper Esopus Creek watershed. The creek is a well-documented source of sediment and turbidity to the Ashokan Reservoir, which is part of the New York City water supply system. During the last 2 decades there has been a series of stream stabilization and sediment reduction projects completed in the upper Esopus Creek watershed intended to reduc
Learn More
link
white map with black and gray dots

Stony Clove Basin Sediment and Turbidity Monitoring

Problem Suspended-sediment concentration (SSC) and turbidity are primary water-quality concerns in New York City’s (NYC) water-supply system (U.S. Environmental Protection Agency, 2007). In the NYC water-supply system turbidity is largely caused by clay and silt rather than organic material (Effler et al. 1998, Peng et al. 2002, 2004). Sediment can originate from the watershed land...
By
New York Water Science Center
link

Stony Clove Basin Sediment and Turbidity Monitoring

Problem Suspended-sediment concentration (SSC) and turbidity are primary water-quality concerns in New York City’s (NYC) water-supply system (U.S. Environmental Protection Agency, 2007). In the NYC water-supply system turbidity is largely caused by clay and silt rather than organic material (Effler et al. 1998, Peng et al. 2002, 2004). Sediment can originate from the watershed land surface and the
Learn More
link
light gray and dark gray map with black dots

Esopus Creek Sediment and Turbidity Study

Background The Ashokan Reservoir is located in the Catskill Mountains of New York State and is part of New York City’s (NYC) water supply system. The NYC water-supply system is operated by the NYC Department of Environmental Protection (NYCDEP) under a filtration avoidance determination (FAD) issued by the New York State Department of Health. The Ashokan Reservoir watershed is 255 mi2...
By
New York Water Science Center
link

Esopus Creek Sediment and Turbidity Study

Background The Ashokan Reservoir is located in the Catskill Mountains of New York State and is part of New York City’s (NYC) water supply system. The NYC water-supply system is operated by the NYC Department of Environmental Protection (NYCDEP) under a filtration avoidance determination (FAD) issued by the New York State Department of Health. The Ashokan Reservoir watershed is 255 mi2 and is one o
Learn More
link
multicolored topographical map in mountainous area

Assessment of Regional Forest Health and Stream and Soil Chemistry Using a Mulit-Scale Approach and New Methods of Remote Sensing Interpretation in the Catskill Mountains of New York

The overall goal of this project has been the development of forest health and sensitivity indicators and “1st-generation” maps of potential sensitivity to disturbance for lands within watersheds of the NYC water supply in the Catskill Mountains of New York. The methodologies and data layers created in this effort can now be used to aid management decisions and help determine the extent...
By
New York Water Science Center
link

Assessment of Regional Forest Health and Stream and Soil Chemistry Using a Mulit-Scale Approach and New Methods of Remote Sensing Interpretation in the Catskill Mountains of New York

The overall goal of this project has been the development of forest health and sensitivity indicators and “1st-generation” maps of potential sensitivity to disturbance for lands within watersheds of the NYC water supply in the Catskill Mountains of New York. The methodologies and data layers created in this effort can now be used to aid management decisions and help determine the extent and mag
Learn More
link
map of the Upper Delaware River with triangle markers

Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania

Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers...
By
New York Water Science Center
link

Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania

Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers consisting of in
Learn More

Turbidity Data from the Upper Esopus Creek Watershed, New York

This data release contains continuous (15-minute interval) turbidity data from the upper Esopus Creek Watershed in the Catskill Mountain Region of New York State. The upper Esopus watershed drains to the Ashokan Reservoir, part of the New York City (NYC) drinking water supply system. Turbidity is a primary water-quality concern in the NYC water-supply system, particularly in the upper...
By
New York Water Science Center

Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022

The U.S. Geological Survey (USGS), as part of the Next Generation Water Observing System (NGWOS) has collected discrete stream samples for analysis of suspended-sediment concentrations at eight real-time streamflow and water-quality monitoring (turbidity and suspended sediment) stations located in Pennsylvania, New Jersey, and New York in the Delaware River Basin. Data were collected...
By
Pennsylvania Water Science Center

Estimated Streamflow and Suspended-Sediment Loads for Select Sites in the Esopus Creek Watershed, New York (ver. 2.0, September 2024)

This U.S. Geological Survey (USGS) data release contains estimated daily mean streamflow for Broadstreet Hollow Brook at Highway 28 at Allaben NY (USGS station ID 01362232) and Bushnellsville Creek at State Highway 42 at Shandaken NY (USGS station ID 0136219702) based on methods in Gazoorian (2015) and available discharge data from West Kill near West Kill NY (USGS station ID 01349810)...
By
New York Water Science Center

Flood-Frequency Data for Select Sites in the Esopus Creek Watershed, New York

This U.S. Geological Survey (USGS) data release contains batch formatted annual peak streamflow data (PkFlows_AllSites.txt) for the respective periods of record (through the 2020 or 2021 water year) for seven USGS streamgages in the upper Esopus Creek watershed in upstate New York. This data release also contains batch formatted specification (PkFlows_AllSites.psf) and output (PEAKFLOWS...
By
New York Water Science Center, StreamStats

Bed material transport data in the upper Esopus Creek watershed, Ulster and Greene Counties, NY, 2017-2020

The U.S. Geological Survey, in cooperation with Ashokan Watershed Stream Management Program, investigated the feasibility of bedload monitoring in the upper Esopus Creek watershed, Ulster and Greene Counties, New York (NY), from 2017 to 2020. Traditional bedload samples were collected at two locations: Birch Creek at Big Indian, NY, and Stony Clove at Jansen Rd at Lanesville, NY. Active...
By
New York Water Science Center

Suspended-sediment concentration and turbidity data for sites in the upper Esopus Creek watershed New York, 2016-19

The upper Esopus Creek is the primary tributary to the Ashokan Reservoir, part of the New York City (NYC) water supply system. Suspended-sediment concentration (ssc) and turbidity are primary water-quality concerns in the NYC water-supply system, particularly in the upper Esopus Creek watershed. In 2016 the NYC Department of Environmental Protection and U.S. Geological Survey entered...
By
New York Water Science Center

Northeastern Hydrologic Benchmark Network (HBN) Soil Chemistry and Catskill Mountain Water-Quality Data

This data product contains soil chemistry data from 4 locations. Two of the locations were located in the Neversink River watershed near Claryville, NY (01435000) in the Catskill Mountains of New York (Fall Brook and Winnisook Creek), 1 of the locations was the Young Womans Creek watershed near Renovo, PA (01545600) and the last site was the Wild River watershed at Gilead, Maine...
By
New York Water Science Center
Filter Total Items: 18

Leveraging high-frequency sensor data and U.S. National Water Model output to forecast turbidity in a drinking water supply basin

As high-frequency sensor networks increasingly enhance data-driven models of water quality, process-based models like the U.S. National Water Model (NWM) are generating accessible forecasts of streamflow at increasingly dense scales. There is now an opportunity to combine these products to construct actionable water quality forecasts. To that end, we couple streamflow forecasts from the...
Authors
John T. Kemper, Kristen L. Underwood, Scott Douglas Hamshaw, Dany Davis, Jason Siemion, James B. Shanley, Andrew W. Schroth
By
Water Resources Mission Area

Effects of a large flood on sediment and turbidity reduction projects in the Esopus Creek watershed, NY

On December 24-25, 2020, 7.3 to 14.6 cm of rain fell on a large snowpack in the upper Esopus Creek (UEC) watershed in the Catskill Mountains of New York. The resulting flood had an annual exceedance probability (AEP) of 4 to 20% (recurrence intervals of 25 to 5 years) in streams across the watershed, resulted in substantial geomorphic adjustments in some stream channels, and transported...
Authors
Jason Siemion, Wae D. Davis, Donald B. Bonville
By
Water Resources Mission Area, New York Water Science Center

Bed-material transport in the upper Esopus Creek watershed, Ulster and Greene Counties, New York, 2017–20

The U.S. Geological Survey, in cooperation with the Ashokan Watershed Stream Management Program, investigated the feasibility of bedload monitoring in the upper Esopus Creek watershed, Ulster and Greene Counties, New York, from 2017 to 2020. Traditional bedload samples were collected at two locations: Birch Creek at Big Indian, New York (station 013621955), and Stony Clove Creek at...
Authors
Jason Siemion, Michael R. Antidormi, Donald B. Bonville, Jason S. Finkelstein, Mathieu D. Marineau
By
Water Resources Mission Area, New York Water Science Center

The water quality of selected streams in the Catskill and Delaware water-supply watersheds in New York, 1999–2009

From October 1, 1999, through September 30, 2009, water-quality samples were collected, and discharge was measured at 13 streamgages within the Catskill and Delaware watersheds of the New York City water supply system. The Catskill and Delaware watersheds supply about 90 percent of the water needed by 9 million customers. On average, 59 water-quality samples were collected at each...
Authors
Michael R. McHale, Jason Siemion, Peter S. Murdoch
By
Water Resources Mission Area, New York Water Science Center

Turbidity–suspended-sediment concentration regression equations for monitoring stations in the upper Esopus Creek watershed, Ulster County, New York, 2016–19

Upper Esopus Creek is the primary tributary to the Ashokan Reservoir, part of the New York City water-supply system. Elevated concentrations of suspended sediment and turbidity in the watershed of the creek are of concern for the system.Water samples were collected through a range of streamflow and turbidity at 14 monitoring sites in the upper Esopus Creek watershed for analyses of...
Authors
Jason Siemion, Donald B. Bonville, Michael R. McHale, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

The Biscuit Brook and Neversink Reservoir Watersheds: Long-term investigations of stream chemistry, soil chemistry, and aquatic ecology in the Catskill Mountains, New York, USA, 1983 to 2020

This data note describes the Biscuit Brook and Neversink Reservoir watershed Long-Term Monitoring Data that includes: 1) stream discharge, (1983 – 2020 for Biscuit Brook and 1937 – 2020 for the Neversink Reservoir watershed), 2) stream water chemistry, 1983-2020, at 4 stations, 3) fish survey data from 16 locations in the watershed 1990-2019, 4) soil chemistry data from 2 headwater sub...
Authors
Peter S. Murdoch, Douglas A. Burns, Michael McHale, Jason Siemion, Barry P. Baldigo, Gregory B. Lawrence, Scott D. George, Michael R. Antidormi, Donald B. Bonville
By
Water Resources Mission Area, New York Water Science Center

Have sustained acidic deposition decreases led to increased calcium availability in recovering watersheds of the Adirondack region of New York, USA?

Soil calcium depletion has been strongly linked to acidic deposition in eastern North America and recent studies have begun to document the recovery of soils in response to large decreases in acidic deposition. However, increased calcium availability has not yet been seen in the B horizon, where calcium depletion has been most acute, but mineral weathering is critically important for...
Authors
Gregory B. Lawrence, Jason Siemion, Michael R. Antidormi, Donald B. Bonville, Michael McHale
By
Water Resources Mission Area, New York Water Science Center

Response of water chemistry and young-of-year brook trout to channel and watershed liming in streams showing lagging recovery from acidic deposition

Reductions in sulfur emissions have initiated chemical recovery of surface waters impacted by acidic deposition in the Adirondack region of New York State. However, acidified streams remain common in the region, which limits recovery of brook trout (Salvelinus fontinalis) populations. To investigate liming as a method to accelerate recovery of brook trout, the channels of two acidified...
Authors
Daniel C Josephson, Gregory B. Lawrence, Scott D. George, Jason Siemion, Barry P. Baldigo, Clifford E. Kraft
By
Water Resources Mission Area, New York Water Science Center

Long-term changes in soil and stream chemistry across an acid deposition gradient in the northeastern United States

Declines in acidic deposition across Europe and North America have led to decreases in surface water acidity and signs of chemical recovery of soils from acidification. To better understand the link between recovery of soils and surface waters, chemical trends in precipitation, soils, and streamwater were investigated in three watersheds representing a depositional gradient from high to...
Authors
Jason Siemion, Michael McHale, Gregory B. Lawrence, Douglas A. Burns, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

The response of soil and stream chemistry to decreases in acid deposition in the Catskill Mountains, New York, USA

The Catskill Mountains have been adversely impacted by decades of acid deposition, however, since the early 1990s, levels have decreased sharply as a result of decreases in emissions of sulfur dioxide and nitrogen oxides. This study examines trends in acid deposition, stream-water chemistry, and soil chemistry in the southeastern Catskill Mountains. We measured significant reductions in...
Authors
Michael McHale, Douglas A. Burns, Jason Siemion, Michael R. Antidormi
By
Water Resources Mission Area, New York Water Science Center

Suspended-sediment and turbidity responses to sediment and turbidity reduction projects in the Beaver Kill, Stony Clove Creek, and Warner Creek Watersheds, New York, 2010–14

Suspended-sediment concentrations (SSCs) and turbidity were monitored within the Beaver Kill, Stony Clove Creek, and Warner Creek tributaries to the upper Esopus Creek in New York, the main source of water to the Ashokan Reservoir, from October 1, 2010, through September 30, 2014. The purpose of the monitoring was to determine the effects of suspended-sediment and turbidity reduction...
Authors
Jason Siemion, Michael R. McHale, Wae Danyelle Davis
By
Water Resources Mission Area, New York Water Science Center

Methods of soil resampling to monitor changes in the chemical concentrations of forest soils

Recent soils research has shown that important chemical soil characteristics can change in less than a decade, often the result of broad environmental changes. Repeated sampling to monitor these changes in forest soils is a relatively new practice that is not well documented in the literature and has only recently been broadly embraced by the scientific community. The objective of this...
Authors
Gregory B. Lawrence, Ivan J. Fernandez, Paul W. Hazlett, Scott W. Bailey, Donald S. Ross, Thomas R. Villars, Angelica Quintana, Rock Ouimet, Michael McHale, Chris E. Johnson, Russell D. Briggs, Robert A. Colter, Jason Siemion, Olivia L. Bartlett, Olga Vargas, Michael R. Antidormi, Mary Margaret Koppers
By
Water Resources Mission Area, New York Water Science Center
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