USGS Science for a changing world
 
  Water Resources
  skip navigation


Access to a backup real-time system is available at http://md.waterdata.usgs.gov/nwis/current?type=flow.

Real-Time Data for Dist. of Columbia




  

Daily Streamflow Conditions

Select a site to retrieve data and station information.
Stream gage levels in Dist. of Columbia, relative to 30 year average. Q = 5430 cfs, Gage height = 3.42 ft, 2004-10-31 18:15:00, 25-75. POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA  Gage height = 1.40 ft, 2004-10-31 17:30:00, Not ranked. POTOMAC RIVER AT WISCONSIN AVE, WASHINGTON, DC Q = 20 cfs, Gage height = 1.25 ft, 2004-10-31 17:15:00, 10-24. NORTH EAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MD Q = 2.0 cfs, Gage height = 1.01 ft, 2004-10-31 20:15:00, Not ranked. NW BRANCH ANACOSTIA RIVER NEAR HYATTSVILLE, MD  Gage height = 1.45 ft, 2004-10-31 20:36:00, Not ranked. ANACOSTIA RIVER AQUATIC GARDENS AT WASHINGTON, DC Q = 1.6 cfs, Gage height = 1.12 ft, 2004-10-31 17:45:00, Not ranked. WATTS BRANCH AT WASHINGTON, DC Q = 7.0 cfs, Gage height = 4.18 ft, 2004-10-31 17:35:00, Not ranked. FOURMILE RUN AT ALEXANDRIA, VA Q = 6.8 cfs, Gage height = .89 ft, 2004-10-31 17:30:00, 25-75. CAMERON RUN AT ALEXANDRIA, VA Q = 5.4 cfs, Gage height = 1.89 ft, 2004-10-31 20:45:00, 25-75. ACCOTINK CREEK NEAR ANNANDALE, VA
Explanation
[color code for] High
[color code for] > 90th percentile
[color code for] 75th - 89th percentile
[color code for] 25th - 74th percentile
[color code for] 10th - 24th percentile
[color code for] < 10th percentile
[color code for] Low
[color code for] Not ranked
The colored dots on this map depict streamflow conditions as a percentile, which is computed from the period of record for the current day of the year. Only stations with at least 30 years of record are used.
The gray circles indicate other stations that were not ranked in percentiles either because they have fewer than 30 years of record or because they report parameters other than streamflow. Some stations, for example, measure stage only.



Statewide Streamflow Table


Real-time data typically are recorded at 15-60 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. Data from real-time sites are relayed to USGS offices via satellite, telephone, and/or radio and are available for viewing within minutes of arrival.

All real-time data are provisional and subject to revision.

Build Table Build a custom summary table for one or more stations.
Build Sequence Build a custom sequence of graphical or tabular data for one or more stations.

Questions about data Dist. of Columbia NWISWeb Data Inquiries Top
Feedback on this website Dist. of Columbia NWISWeb Maintainer Explanation of terms
Real-Time Data for Dist. of Columbia
http://waterdata.usgs.gov/dc/nwis/rt?

Retrieved on 2004-11-01 03:51:51 EST
Department of the Interior, U.S. Geological Survey
USGS Water Resources of Dist. of Columbia
Privacy Statement || Disclaimer || Accessibility
1.94   1.16 sd