New England Water Science Center

Data and Tools

Much of our data is publicly available through the USGS NWIS, 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

Tidal:     MA | ME

Estuary:    CT

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: 130
Date published: August 24, 2021

Río Icacos, Puerto Rico, Turbidity, FDOM, and Water Temperature, March 2017 to March 2019

The data were collected as part of a six-site study (four in New Hampshire and two in Puerto Rico) to understand how the relative variation in stream chemistry and discharge responds to variations in climate, represented by anomalies in precipitation and temperature, and how these responses differed in forests in these contrasting locations and climates.

Date published: June 30, 2021

Data and hydraulic models at selected dam-removal and culvert-retrofit sites in the northeastern United States

This dataset contains U.S. Geological Survey (USGS) developed hydraulic models, USGS developed hydrology data, US Fish and Wildlife Service (USFWS) supplied data (topography/bathymetry and structure data for pre removal conditions), and USGS field surveyed data at nine dam-removal and culvert-retrofit sites in the northeastern United States (Olson and Simeone, 2021). 

Date published: June 23, 2021

Chemical Data From 40 Years of Monitoring a Treated-Wastewater Groundwater Plume in a Sand and Gravel Aquifer, Cape Cod, Massachusetts, 1978-2018

This U.S. Geological Survey data release provides a comprehensive dataset of water-quality data and sampling-site characteristics collected in 1978–2018 during a study of the effects of land disposal of treated wastewater on groundwater quality in an unconsolidated sand and gravel aquifer on Cape Cod, Massachusetts. 

Date published: June 4, 2021

Data for Models Estimating Baseflow for Streams Containing Endangered Atlantic Salmon in Maine, USA

The U.S. Geological Survey (USGS) developed a regression model for estimating August mean baseflow per square mile of drainage area to help resource managers assess relative amounts of baseflow in streams with Maine Atlantic Salmon habitat. The model was derived from August mean baseflows computed at 31 USGS streamgages in and near the Gulf of Maine Atlantic Salmon Habitat Recovery Units.

Date published: May 24, 2021

Water-quality data from the Providence Water Supply Board for tributary streams to the Scituate Reservoir, water years 2018-19

Water-quality data were collected by the Providence Water Supply Board (PWSB) from tributaries in the Scituate Reservoir drainage area, October 2017 through September 2019 (water years 2018 and 2019). Water-quality samples were collected by the PWSB either monthly or quarterly at fixed stations on 37 tributaries in the Scituate Reservoir drainage area.

Date published: May 14, 2021

Stochastic Empirical Loading and Dilution Model (SELDM) software archive

The Stochastic Empirical Loading and Dilution Model (SELDM) was developed by the U.S. Geological Survey (USGS), in cooperation with the Federal Highway Administration (FHWA) Office of Project Delivery and Environmental Review to transform complex scientific data into meaningful information about the risk of adverse effects of runoff on receiving waters.

Date published: April 22, 2021

Measuring stream flow

In this explorable interactive tool you will investigate a series of charts and sliders to explore how water level, water velocity, number of measurement points and stream channel shape influence stream flow. Great for use in the classroom, especially for student curious about coding.

Date published: April 18, 2021

Model archive for Assessing long-term annual yields of highway and urban runoff in selected areas of California with the Stochastic Empirical Loading Dilution Model (SELDM)

This model archive describes approaches used by the U.S. Geological Survey in cooperation with CalTrans for assessing long-term annual yields of highway and urban runoff in selected areas of California with version 1.1.0 of the Stochastic Empirical Loading and Dilution Model (SELDM). SELDM was used to do 368 analyses to examine highway- and urban-runoff yields for 53 runoff-quality...

Date published: April 18, 2021

Aqueous chemistry database, Sleepers River Research Watershed, Danville, Vermont, 1991-2018

The Sleepers River Research Watershed, near Danville, Vermont, was established in 1958 and has since been operated by the National Weather Service, U.S. Army Cold Regions Research and Engineering Laboratory, and U.S. Geological Survey. The dataset includes major ion chemistry, select metals, and isotopic composition for atmospheric depositiion, streamflow, and subsurface waters.

Date published: April 6, 2021

Mercury, methylmercury, cations, dissolved organic carbon, and dissolved organic matter optical properties in small forest streams during five synoptic sampling campaigns at Sleepers River, Vermont, 2017-2018

The dataset describes mercury and dissolved organic matter concentration and quality over five synoptic sampling campaigns at 12 stream sites within the 41-hectare (ha) forested W-9 catchment at Sleepers River, Vermont, with an additional site at the downstream W-3 gage (837 ha).

Date published: April 1, 2021

Physical and Chemical Data to Characterize Water-Quality Conditions in the Sakonnet River, Rhode Island, 2018-2019

Physical and chemical data were collected to characterize water-quality conditions in the Sakonnet River, a tidal strait located on the east side of Narragansett Bay in Rhode Island, from April 28 to November 11, 2018 and from June 19 to November 26, 2019.