New England Water Science Center

Data and Tools

Much of our data is publicly available through the USGS National Water Information System, but additional datasets and analytical tools are also available.

Current Conditions:

Streamflow:   CT | ME | MA | NH | RI | VT

Water Quality:   CT | ME | MANH | RI | VT

Groundwater:    CT | ME | MANH | RI | VT

Precipitation:    CT | ME | MA | NH | RI | VT

Lakes and Reservoirs:    ME | MA | NH | VT

USGS StreamStats

USGS StreamStats

Interactively identify a watershed boundary and obtain detailed streamflow statistics.

For an introduction to StreamStats click HERE

View Map

USGS WaterAlert

USGS WaterAlert

Use the interactive map to browse the network of USGS sites by data type. 

WaterAlert Map
Filter Total Items: 70
Date published: November 1, 2019

Baseline groundwater-quality data from a densely developed coastal neighborhood, Falmouth, Massachusetts (2016 - 2019)(ver. 2.0, November 2019)

This data release provides a comprehensive dataset of sampling-site characteristics and baseline groundwater-quality data collected from a network of multilevel sampling wells installed in a densely developed coastal neighborhood undergoing a conversion from onsite septic systems to municipal sewering. Groundwater samples were collected during multiple events from a total of 227 well screens...

Date published: October 31, 2019

Iron fouling associated with drainage from roadway sites constructed with rock-fill in New Hampshire, USA

This data release contains files that are associated with the publication "Understanding and predicting iron fouling associated with drainage from roadway sites constructed with rock-fill in New Hampshire, USA". Each zipped file contains a data table or raster file and an associated metadata file. IronFoulingCutFillData.zip contains a .csv file and .xml metadata file related to the roadcut...

Date published: October 31, 2019

Data tables and raster for iron fouling associated with drainage from roadway sites constructed with rock-fill in New Hampshire, USA

This data release contains files that are associated with the publication "Understanding and predicting iron fouling associated with drainage from roadway sites constructed with rock-fill in New Hampshire, USA". Each zipped file contains a data table or raster file and an associated metadata file. IronFoulingCutFillData.zip contains a .csv file and .xml metadata file related to the roadcut...

Date published: October 24, 2019

Geospatial Dataset of Wells and Attributes in the New England Groundwater Level Network, 2017

A dataset of well information and geospatial data was developed for 426 U.S. Geological Survey (USGS) observation wells in Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. An extensive list of attributes is included about each well, its location, and water-level history to provide the public and water-resources community with comprehensive information on the USGS...

Date published: October 17, 2019

Soil-Water-Balance (SWB) model archive used to simulate potential annual recharge in Maine, 1991-2015

This model archive makes available the calibrated Soil-Water-Balance (SWB) model used to simulate potential recharge for the State of Maine for 1991 to 2015. The model was calibrated using annual values of runoff, evapotranspiration, and recharge for 32 watersheds in the State. The simulations were used to create 25-year statistical grids of annual potential recharge (mean, median, minimum,...

Date published: October 17, 2019

Simulated 25-year potential recharge datasets for Maine, 1991-2015

This set of data includes four potential annual recharge grids for the State of Maine that were simulated using the Maine Soil-Water-Balance model for 1991 through 2015. The files include a grid representing the uncertainty in the potential recharge and a grid showing the annual average precipitation from the climate dataset that the simulation is based on. A 25-year simulation of potential...

Date published: October 17, 2019

Simulated 25-year median potential recharge datasets for Maine, 1991-2015

This set of data includes four potential annual recharge grids for the State of Maine that were simulated using the Maine Soil-Water-Balance model for 1991 through 2015. The files include a grid representing the uncertainty in the potential recharge and a grid showing the annual average precipitation from the climate dataset that the simulation is based on. A 25-year simulation of potential...

Date published: October 15, 2019

Crosswalk Table Between NHDPlus V2.1 and its Accompanying Watershed Boundary Dataset Snapshot of 12-Digit Hydrologic Units

A crosswalk table between NHDPlus version 2.1 flowlines (using the unique field COMID) and the Watershed Boundary Dataset (WBD) 12-digit-hydrologic units (HU-12) is provided for the 48 contiguous United States. The crosswalk table provides a WBD HU-12 assignment for every networked flowline in the NHDPlus. In this way, the network developed for navigation and modeling, NHDPlus, is aligned with...

Date published: September 6, 2019

Data collected at Pawtuckaway Beach in Nottingham, New Hampshire, 2015-2017, including data from Escherichia coli (bacteria) samples, and from USGS meteorological and water-quality stations

In the summer of 2014 at Pawtuckaway Beach at Pawtuckaway State Park in Nottingham New Hampshire, the U.S. Geological Survey (USGS) established a seasonal meteorological station (430508071091801) on the beach and a seasonal water-quality station (01073389) in Pawtuckaway Lake proximal to the swimming area. Data recorded at 15-minute intervals by the meteorological station were wind speed, wind...

Date published: September 5, 2019

Data for Arsenic Variability and Groundwater Age in Three Water-Supply Wells in Southeast New Hampshire

Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age. All samples had measurable concentrations of arsenic throughout the entire sampling period and concentrations in individual wells varied, on average, by more than 7 µg/L. High arsenic concentrations (>10 µg/L) were...

Date published: August 9, 2019

Chloride concentrations and georeferenced land use variables from domestic wells in Vermont, 2011-2018

This data release presents chloride concentrations in groundwater sampled from 4,319 domestic wells across Vermont between 2011 and 2018. Ninety of these wells were sampled twice and 4,229 were sampled once. The Vermont Department of Health matched each well to geographic well information including town, county, distance to nearest road, population density and percent urban and agricultural...

Date published: April 9, 2019

Drought Streamflow Probabilities in Northeast Region

Maximum likelihood logistic regression (MLLR) is used to estimate drought probabilities for selected Northeast rivers and streams. Winter streamflows are used to estimate the chance of hydrologic drought during summer months. This application allows the display and query of these drought streamflow probabilities for Northeastern streams.