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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). Instantaneous streamflow and estimated instantaneous suspended-sediment loads for Hollow Tree Brook at State Highway 214 at Lanesville NY (USGS station ID 01362345) were derived from streamflow data from Hollow Tree Brook at Lanesville (01362342), methods in Lumia and others (2006) and Rasmussen and others (2009), and available...
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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 reduce the suspended sediment load and turbidity levels delivered to the reservoir. During the last 7 years there has been a concerted effort to measure the effect of these projects on turbidity and suspended sediment. There is currently a large, long-term turbidity and suspended sediment study underway within the upper Esopus...
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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 intensively sampled sites, gradient sites representing the range of land uses present in the basin, and regional stream-survey sites. Median nitrate and total phosphorous concentrations were 1.15 and 0.01 milligrams per liter (mg/L) for three sites on the mainstem Delaware River, 1.27 and 0.009 mg/L for the East Branch Delaware...
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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-Delaware water supply system that supplies more than 10 million people a day with clean drinking water. Stream corridor assessments of tributaries to the Upper Esopus Creek by Ulster County Soil and Water Conservation District, New York City Department of Environmental Protection, and State University of New York at New Paltz summer...
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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_ALLSITES.PRT) files from log-Pearson type III (LPIII) flood-frequency analysis of the annual peak streamflow data from version 7.3 of the USGS PeakFQ software (https://water.usgs.gov/software/PeakFQ/), and a csv file (FloodFrequencyEstimates.csv) with estimates of flood magnitudes for selected annual exceedance probabilities from...
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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 magnitude of terrestrial and aquatic responses to acidic deposition. The data products derived from this effort have been produced and documented in such a manner that stakeholders can now use these products for site evaluation as well as to perform more extensive analysis on the suite of readily available GIS and image-based...
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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 into a collaborative agreement to conduct a comprehensive study of suspended sediment and turbidity in the upper Esopus Creek watershed. Objectives included ssc, streamflow, and turbidity monitoring, and development of turbidity-ssc regression equations to estimate ssc from continuous turbidity measurements. Cross-section and point...
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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 from 2019-2022 at these stations for the application of predicting suspended-sediment concentrations using real-time continuous turbidity, suspended sediment from an uncalibrated sensor, and streamflow data. Regression equations were developed by relating discrete-sample suspended sediment and continuous turbidity, suspended sediment...
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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 of two reservoirs in the New York City Catskill Reservoir system and one of six reservoirs in the West-of-Hudson Catskill-Delaware system. The upper Esopus Creek is the primary tributary to the Ashokan Reservoir, with a 192 mi2 watershed from the source, Winnisook Lake, to the Ashokan Reservoir near Boiceville, NY. Suspended-sediment...
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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 active stream corridor (the stream bed and its adjacent banks and hillslopes) (Walling 2005). In the upper Esopus Creek watershed, the main source of water to the Ashokan Reservoir, the active stream corridor is the primary source of sediment and turbidity to the stream. Terrestrial sources of sediment and turbidity are...
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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 Esopus Creek watershed.
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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 and passive tracers were used at Stony Clove at Jansen Rd at Lanesville, NY, to measure bed material displacement associated with storm runoff.


    map background search result map search result map Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania Effects of Stream Restoration and Bank Stabilization on Suspended Sediment in Tributaries to the Upper Esopus Creek 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 Esopus Creek Sediment and Turbidity Study Stony Clove Basin Sediment and Turbidity Monitoring Upper Esopus Creek Tributary Bedload Pilot Study Suspended-sediment concentration and turbidity data for sites in the upper Esopus Creek watershed New York, 2016-19 Bed material transport data in the upper Esopus Creek watershed, Ulster and Greene Counties, NY, 2017-2020 Flood-Frequency Data for Select Sites in the Esopus Creek Watershed, New York Estimated Streamflow and Suspended-Sediment Loads for Select Sites in the Esopus Creek Watershed, New York, Water Years 2017 through 2021 Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022 Turbidity Data from the Upper Esopus Creek Watershed, New York Flood-Frequency Data for Select Sites in the Esopus Creek Watershed, New York Estimated Streamflow and Suspended-Sediment Loads for Select Sites in the Esopus Creek Watershed, New York, Water Years 2017 through 2021 Turbidity Data from the Upper Esopus Creek Watershed, New York Effects of Stream Restoration and Bank Stabilization on Suspended Sediment in Tributaries to the Upper Esopus Creek Esopus Creek Sediment and Turbidity Study Stony Clove Basin Sediment and Turbidity Monitoring Upper Esopus Creek Tributary Bedload Pilot Study Suspended-sediment concentration and turbidity data for sites in the upper Esopus Creek watershed New York, 2016-19 Bed material transport data in the upper Esopus Creek watershed, Ulster and Greene Counties, NY, 2017-2020 Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania 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 Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022