Data

This data release contains results from the analysis of streambank and adjacent hillslope sediment samples collected from the Stony Clove and Woodland Creek watersheds in the Catskill Mountain region of New York State from July to October 2024. Fourteen or fifteen samples were collected from each of three depositional units ­­— alluvium, glaciolacustrine clay, and glacial till. Results...

This data release contains phytoplankton, water-quality, and satellite data from thirteen surveys along the lower Hudson River, extending from Yonkers to Troy, New York. Data were collected between August 2021 and October 2023. These surveys included continuous water-quality measurements collected at 10-second intervals using a multiparameter sonde deployed in a boat-mounted flow-through...

This data release contains tabular data for a regression model used to estimate daily mean chloride concentration from specific conductance, road salt application data, and mass balance data for a study of road salt runoff in Essex County, New York. Road salt application rates were provided by the New York State Department of Transportation (NYS DOT) and the Town of North Elba, NY. Data...

This data release contains simulation results from twenty-three (23) transient inset numerical models of the eastern part of Long Island, New York that includes the Peconic River, and estuaries around the North and South Fork. The models simulate nitrogen concentrations in the aquifer and nitrogen loads to surface water bodies from 2020-2120 under different nitrogen inputs that represent...

This groundwater model archive documents transient and steady-state regional and inset numerical models of the Long Island aquifer system that simulate groundwater flow and nitrogen transport for the period 1900-2019 using the US Geological Survey groundwater modeling software MODFLOW 6 (Langvin and others, 2017 and 2022). The development and calibration of the regional groundwater flow...

This data release includes a shapefile of compound flood hazard scores and the associated input data, scripts, and a sample output file necessary for calculating rain-surge return period adjustments for Long Island Sound and its surrounding areas. The raw input data and imputation scripts are included in this data release and are located in the "Imputation and data compilation.zip"...

This model application data release documents coupled transient and steady-state regional and inset numerical models of the Long Island aquifer system to simulate groundwater flow and nitrogen transport using the US Geological Survey groundwater modeling software MODFLOW 6 (Langevin and others, 2017 and 2022). The regional model domain encompasses all of Long Island, New York, while the...

This data release contains shapefiles and raster data of spatially distributed water level inundation, water depth, wave discharge and a set of hazard ranks for water levels, waves, and a combination of both for coastal areas of Long Island, NY and Long Island Sound. Water inundation and depth data include both current and future projections of inundation based on 4 annual exceedance...

This USGS data release contains R models (R Core Team, 2020) for estimating 7Q10 and 30Q10 [lowest annual 7-day and 30-day average streamflow that occurs (on average) once every 10 years] statistics at ungaged locations in or adjacent to New York State excluding Long Island. Details on model development are available in Stagnitta and others (2025). basin_characteristics.csv - 224 basin

This data release provides spatial digital data for factors that influence pluvial flood hazard potential, including closed depressions, curve number, drainage networks, topographic slope, average annual rainfall, 1-hr and 24-hour 100-year return period rainfall accumulation, and locations of recorded floods. In addition, these flood influencing factors are summarized to a common 900...

This U.S. Geological Survey (USGS) data release contains results of a paleolimnological analysis of cyanobacteria occurrence in Moreau and Brant Lake in the Adirondack Region of New York based on a single sediment core collected in each lake in September, 2022. The data types include 1) lake sediment core data for lead-210 age dating, 2) akinete classification and enumeration data, 3)...

This data release contains shapefiles and a raster delineating boundaries and features associated with an investigation of the hydrogeology of unconsolidated and bedrock aquifers along the Salmon River corridor near Malone, New York (Fisher and others, 2025). Included shapefiles depict the approximate potentiometric surface of the Potsdam Sandstone, aquifer types, bedrock exposures...