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.
Science and Products
Upper Esopus Creek Tributary Bedload Pilot Study
Stony Clove Basin Sediment and Turbidity Monitoring
Esopus Creek Sediment and Turbidity Study
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
Effects of Stream Restoration and Bank Stabilization on Suspended Sediment in Tributaries to the Upper Esopus Creek
Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania
Science and Products
- Science
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 reducStony 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 theEsopus 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 oAssessment 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 magEffects of Stream Restoration and Bank Stabilization on Suspended Sediment in Tributaries to the Upper Esopus Creek
Introduction The upper Esopus Creek watershed is located in the eastern Catskill Mountains of New York State and covers 497 km2 from Slide Mountain, the highest peak in the Catskills at 1,274 m, to the Ashokan Reservoir at 193 m elevation (fig. 1). Suspended sediment and turbidity are primary water quality concerns in the Ashokan Reservoir watershed, part of the New York City Catskill-DelawareWater 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 - Data
- Publications