USGS WaterWatch Resources
Worried about local Flooding or Drought Conditions?
Find out the current risk for your area.

USGS Local Water Science Center

Pomperaug River (USGS Station No. 01204000)
Nonnewaug River (USGS Station No. 01203600)
Weekeepeemee River (USGS Station No. 01203805)
Ground Water Monitoring well #42 in Southbury

USGS Water Alert
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. Real-time data from USGS gages are transmitted to USGS offices at various intervals; in most
cases, once every 1 or 4 hours. Emergency transmissions, such as during floods, may be more frequent.

USGS WaterWatch – Current Conditions in Connecticut
View interactive map of real-time streamflow
compared to historical streamflow for the day of the year.

USGS FloodWatch in Connecticut
View interactive map of flood and high flow conditions based on Stream Gauge data.

USGS WaterWatch - Flood Tracking
The Flood-tracking chart is a special bar chart showing current stage, recent peak, and
historical peaks. If there is a NWS flood stage, the reference line will also be added on
the chart. The user will need to manually generate the link for their local river using
the respective gauging station ID values and following the instructions provided.

USGS DroughtWatch in Connecticut
View map of below normal 7-day average streamflow
compared to historical streamflow for the day of year.

GroundwaterWatch - Southbury, CT
USGS maintains a variety of groundwater monitoring wells, including those that automatically
record depth to the water table. Using GroundwaterWatch, you can view the most recent
measurements and visually compare them to the Record Monthly Statistics for Depth to water
level, feet below land surface All Approved Continuous & Periodic Data for the history of that
particular well. This is a great tool for determining drought conditions.


WaterWatch in Google Earth
Display real-time, color-coded streamgage data in Google Earth and interactively
link to the gauging station for more information. Google Earth is an interactive, 3D viewer
that seamlessly zooms from a global scale down to less than a meter in many urban areas.


Duration Hydrographs
Link to search by river and select recent time period (up to 3 weeks).

National Water Information System Mapper
View and Download USGS Collected Water Quality Data (Surface and Groundwater)

Instantaneous Data Archive (IDA)
Since 1889 the United States Geological Survey has collected continuous stage, discharge,
and other instantaneous time-series data on the nations rivers and streams. These time-series
data have been and are typically recorded at intervals ranging from 5 to 60 minutes. These
instantaneous data have been processed into and published as various daily values,
such as the daily maximum, minimum, and/or mean. Because the published record are daily
values, the original instantaneous data have not historically been officially approved, published,
or made widely available. This web site has been established to make available as much
historical instantaneous data from USGS data collection stations as possible.

Water-Data Report
Generate a PDF Water-Data Report for your selected river during a selected "water year"
(October to September). Report summarizes daily mean discharge values, minimum and
maximum flows, and statistic of monthly mean data for the full gauge record by water year.  

Want to learn more about River and Flood Dynamics?

Download a presentation given by James Belden, Exec. Dir.,
at Southbury's PreHazard Mitigation Grant Program Workshops in June 2011.

Download a River Dynamics 101 Fact Sheet from the Vermont Agency on Natural Resources.