Water Resources
Current Real-Time Stream Flow Conditions
Learn MoreData and Tools
The USGS Water Resources Mission Area provides water information that is fundamental to national and local economic well-being,
protection of life and property, and effective management of the Nation’s water resources. Below, find data and tools relevant to a
wide range of water resources and conditions including streamflow, groundwater, water quality, and water use and availability.
USGS Water Data for the Nation
Access to water data collected at approximately 1.9 million sites
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Drought Streamflow Probabilities in Northeast Region
Maximum likelihood logistic regression is used to estimate drought probabilities for selected Northeast region streams. Winter streamflows are used to estimate the chance of hydrologic drought during summer months. Hydrologic drought streamflow probabilities for July, August, and September are provided 5 to 11 months in advance. This application allows the display and query of drought...
Delaware River Basin Monitoring-Site Mapper
The Water-Monitoring-Site Mapper is an interactive map of the Delaware River Basin next-generation integrated water observing system with locations from the USGS National Water Information System. Piloting the NextGen water observing system in the Delaware River Basin provides an opportunity to support innovative modern water prediction and decision support systems in a complex river system....
Flood Event Viewer - Montana June 2018 Flood Rocky Mountain Front
The USGS WY-MT Water Science Center provided discharge measurements and high water mark (HWM) flagging for the June 2018 flooding along Elk Creek in Augusta, Montana.
WaterWatch (surface water)
WaterWatch displays maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States, including flood and droughts. Real-time information generally is updated on an hourly basis.
Groundwater Watch
Groundwater Watch displays maps, graphs, and tables describing real-time, recent, and historical groundwater data from wells and springs across the United States. Groundwater Watch groups related wells and data from active well networks and provides basic statistics about the water-level data collected by the USGS and from data supplied to us from partners through cooperative agreements.
WaterQualityWatch
WaterQualityWatch provides access to real-time water-quality data collected at more than 2,000 stream sites throughout the United States, including streamflow, water temperature, specific conductance, pH, dissolved oxygen, turbidity, and nitrate.
WaterNow
The USGS WaterNow service lets users receive current conditions for USGS water-data-collection stations on demand via email or cell-phone text message. The user sends an email or text message containing a USGS current-conditions gaging site number, and will quickly receive a reply with the station's most recent data for one or more of its monitored parameters.
WaterAlert
The U.S. Geological Survey WaterAlert service sends e-mail or text (SMS) messages when certain parameters, as measured by a USGS real-time data-collection station, exceed user-definable thresholds. The development and maintenance of the WaterAlert system is supported by the USGS and its partners, including numerous federal, state, and local agencies.
NWIS Current Water Data (Real-Time Data)
The USGS provides real-time or near-real-time conditions water data at sites across the Nation. Current data typically are recorded at 15- to 60-minute intervals, stored onsite, and then transmitted to USGS offices every 1 to 4 hours, depending on the data relay technique used. Recording and transmission times may be more frequent during critical events.
USGS Mobile Water Data
The USGS Mobile Water Data site highlights USGS current conditions water data in a mobile-friendly website, allowing users to monitor conditions at a favorite river or stream or locate nearby monitoring locations. All USGS current conditions water data is available.
USGS Surface-Water Data for the Nation
Real-time, daily, peak-flow, field measurements, and statistics of current and historical data that describe stream levels, streamflow (discharge), reservoir and lake levels, surface-water quality, and rainfall across the U.S. Surface-water data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.
USGS Groundwater Data for the Nation
Data from wells, springs, test holes, tunnels, drains, and excavations across the U.S.; well location data includes information such as latitude and longitude, well depth, and aquifer. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders.