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Hydrograph River at a Glance Download
Bull Run near Manassas Park Stage (ft)Observed: 3.95 ft at 1:15PM Dec 10, 2019Observed: 3.94 ft at 1:29PM Dec 10, 2019Observed: 3.94 ft at 1:30PM Dec 10, 2019Observed: 3.93 ft at 1:45PM Dec 10, 2019Observed: 3.93 ft at 2:00PM Dec 10, 2019Observed: 3.91 ft at 2:15PM Dec 10, 2019Observed: 3.91 ft at 2:30PM Dec 10, 2019Observed: 3.9 ft at 2:45PM Dec 10, 2019Observed: 3.88 ft at 3:15PM Dec 10, 2019Observed: 3.88 ft at 3:30PM Dec 10, 2019Observed: 3.88 ft at 3:45PM Dec 10, 2019Observed: 3.87 ft at 4:15PM Dec 10, 2019Observed: 3.87 ft at 4:30PM Dec 10, 2019Observed: 3.86 ft at 4:45PM Dec 10, 2019Observed: 3.86 ft at 5:00PM Dec 10, 2019Observed: 3.85 ft at 5:15PM Dec 10, 2019Observed: 3.85 ft at 5:30PM Dec 10, 2019Observed: 3.84 ft at 5:40PM Dec 10, 2019Observed: 3.84 ft at 5:45PM Dec 10, 2019Observed: 3.84 ft at 6:00PM Dec 10, 2019Observed: 3.84 ft at 6:15PM Dec 10, 2019Observed: 3.83 ft at 6:30PM Dec 10, 2019Observed: 3.83 ft at 6:45PM Dec 10, 2019Observed: 3.83 ft at 7:00PM Dec 10, 2019Observed: 3.83 ft at 7:15PM Dec 10, 2019Observed: 3.83 ft at 7:30PM Dec 10, 2019Observed: 3.83 ft at 7:45PM Dec 10, 2019Observed: 3.84 ft at 8:00PM Dec 10, 2019Observed: 3.84 ft at 8:15PM Dec 10, 2019Observed: 3.84 ft at 8:30PM Dec 10, 2019Observed: 3.84 ft at 8:45PM Dec 10, 2019Observed: 3.85 ft at 9:00PM Dec 10, 2019Observed: 3.85 ft at 9:15PM Dec 10, 2019Observed: 3.85 ft at 9:30PM Dec 10, 2019Observed: 3.86 ft at 9:45PM Dec 10, 2019Observed: 3.86 ft at 10:00PM Dec 10, 2019Observed: 3.86 ft at 10:02PM Dec 10, 2019Observed: 3.86 ft at 10:15PM Dec 10, 2019Observed: 3.87 ft at 10:30PM Dec 10, 2019Observed: 3.87 ft at 10:45PM Dec 10, 2019Observed: 3.88 ft at 11:00PM Dec 10, 2019Observed: 3.88 ft at 11:15PM Dec 10, 2019Observed: 3.89 ft at 11:30PM Dec 10, 2019Observed: 3.89 ft at 11:45PM Dec 10, 2019Observed: 3.9 ft at 12:00AM Dec 11, 2019Observed: 3.9 ft at 12:15AM Dec 11, 2019Observed: 3.91 ft at 12:30AM Dec 11, 2019Observed: 3.91 ft at 12:45AM Dec 11, 2019Observed: 3.91 ft at 1:00AM Dec 11, 2019Observed: 3.93 ft at 2:00AM Dec 11, 2019Observed: 3.93 ft at 2:10AM Dec 11, 2019Observed: 3.94 ft at 2:15AM Dec 11, 2019Observed: 3.94 ft at 2:30AM Dec 11, 2019Observed: 3.95 ft at 2:45AM Dec 11, 2019Observed: 3.95 ft at 3:00AM Dec 11, 2019Observed: 3.96 ft at 3:15AM Dec 11, 2019Observed: 3.97 ft at 3:30AM Dec 11, 2019Observed: 3.97 ft at 3:45AM Dec 11, 2019Observed: 3.98 ft at 4:00AM Dec 11, 2019Observed: 3.99 ft at 4:15AM Dec 11, 2019Observed: 3.99 ft at 4:30AM Dec 11, 2019Observed: 4 ft at 4:45AM Dec 11, 2019Observed: 4.01 ft at 5:00AM Dec 11, 2019Observed: 4.01 ft at 5:15AM Dec 11, 2019Observed: 4.02 ft at 5:30AM Dec 11, 2019Observed: 4.03 ft at 5:45AM Dec 11, 2019Observed: 4.03 ft at 5:59AM Dec 11, 2019Observed: 4.04 ft at 6:00AM Dec 11, 2019Observed: 4.04 ft at 6:15AM Dec 11, 2019Observed: 4.05 ft at 6:30AM Dec 11, 2019Observed: 4.05 ft at 6:45AM Dec 11, 2019Observed: 4.06 ft at 7:15AM Dec 11, 2019Observed: 4.06 ft at 7:30AM Dec 11, 2019Observed: 4.07 ft at 7:45AM Dec 11, 2019Observed: 4.07 ft at 8:00AM Dec 11, 2019Observed: 4.08 ft at 8:15AM Dec 11, 2019Observed: 4.08 ft at 8:30AM Dec 11, 2019Observed: 4.09 ft at 8:45AM Dec 11, 2019Observed: 4.09 ft at 9:00AM Dec 11, 2019Observed: 4.1 ft at 9:15AM Dec 11, 2019Observed: 4.1 ft at 9:32AM Dec 11, 2019Observed: 4.1 ft at 9:45AM Dec 11, 2019Observed: 4.11 ft at 10:00AM Dec 11, 2019Observed: 4.11 ft at 10:15AM Dec 11, 2019Observed: 4.12 ft at 10:30AM Dec 11, 2019Observed: 4.12 ft at 10:45AM Dec 11, 2019Observed: 4.12 ft at 11:00AM Dec 11, 2019Observed: 4.13 ft at 11:15AM Dec 11, 2019Observed: 4.13 ft at 11:30AM Dec 11, 2019Observed: 4.13 ft at 11:45AM Dec 11, 2019Observed: 4.13 ft at 12:00PM Dec 11, 2019Observed: 4.13 ft at 12:45PM Dec 11, 2019Observed: 4.13 ft at 12:53PM Dec 11, 2019Observed: 4.13 ft at 1:00PM Dec 11, 2019Observed: 4.13 ft at 1:15PM Dec 11, 2019Observed: 4.13 ft at 1:30PM Dec 11, 2019Observed: 4.13 ft at 1:45PM Dec 11, 2019Observed: 4.13 ft at 2:15PM Dec 11, 2019Observed: 4.13 ft at 2:30PM Dec 11, 2019Observed: 4.13 ft at 2:45PM Dec 11, 2019Observed: 4.13 ft at 3:00PM Dec 11, 2019Observed: 4.12 ft at 3:15PM Dec 11, 2019Observed: 4.12 ft at 3:30PM Dec 11, 2019Observed: 4.12 ft at 3:45PM Dec 11, 2019Observed: 4.12 ft at 3:54PM Dec 11, 2019Observed: 4.11 ft at 3:56PM Dec 11, 2019Observed: 4.11 ft at 4:00PM Dec 11, 2019Observed: 4.11 ft at 4:15PM Dec 11, 2019Observed: 4.11 ft at 4:27PM Dec 11, 2019Observed: 4.1 ft at 5:00PM Dec 11, 2019Observed: 4.08 ft at 6:00PM Dec 11, 2019Observed: 4.05 ft at 7:00PM Dec 11, 2019Observed: 4.02 ft at 8:00PM Dec 11, 2019Observed: 3.99 ft at 9:00PM Dec 11, 2019Observed: 3.97 ft at 10:00PM Dec 11, 2019Observed: 3.94 ft at 11:00PM Dec 11, 2019Observed: 3.91 ft at 12:00AM Dec 12, 2019Observed: 3.89 ft at 1:00AM Dec 12, 2019Observed: 3.86 ft at 2:00AM Dec 12, 2019Observed: 3.83 ft at 3:00AM Dec 12, 2019Observed: 3.81 ft at 4:00AM Dec 12, 2019Observed: 3.78 ft at 5:00AM Dec 12, 2019Observed: 3.76 ft at 6:00AM Dec 12, 2019Observed: 3.73 ft at 7:00AM Dec 12, 2019Observed: 3.69 ft at 8:00AM Dec 12, 2019Observed: 3.65 ft at 9:00AM Dec 12, 2019Observed: 3.62 ft at 10:00AM Dec 12, 2019Observed: 3.59 ft at 11:00AM Dec 12, 2019Observed: 3.57 ft at 12:00PM Dec 12, 2019Observed: 3.55 ft at 1:00PM Dec 12, 2019Observed: 3.53 ft at 2:00PM Dec 12, 2019Observed: 3.52 ft at 3:00PM Dec 12, 2019Observed: 3.51 ft at 4:00PM Dec 12, 2019Observed: 3.5 ft at 5:00PM Dec 12, 2019Observed: 3.49 ft at 6:00PM Dec 12, 2019Observed: 3.48 ft at 7:00PM Dec 12, 2019Observed: 3.46 ft at 8:00PM Dec 12, 2019Observed: 3.46 ft at 9:00PM Dec 12, 2019Observed: 3.45 ft at 10:00PM Dec 12, 2019Observed: 3.44 ft at 11:00PM Dec 12, 2019Observed: 3.43 ft at 12:00AM Dec 13, 2019Observed: 3.42 ft at 1:00AM Dec 13, 2019Observed: 3.42 ft at 3:00AM Dec 13, 2019Observed: 3.42 ft at 4:00AM Dec 13, 2019Observed: 3.43 ft at 5:00AM Dec 13, 2019Observed: 3.43 ft at 6:00AM Dec 13, 2019Observed: 3.43 ft at 7:00AM Dec 13, 2019Observed: 3.43 ft at 8:00AM Dec 13, 2019Observed: 3.43 ft at 9:00AM Dec 13, 2019Observed: 3.43 ft at 10:00AM Dec 13, 2019Observed: 3.43 ft at 11:00AM Dec 13, 2019Observed: 3.44 ft at 12:00PM Dec 13, 2019Observed: 3.46 ft at 1:00PM Dec 13, 2019Observed: 3.48 ft at 2:00PM Dec 13, 2019Observed: 3.5 ft at 3:00PM Dec 13, 2019Observed: 3.53 ft at 4:00PM Dec 13, 2019Observed: 3.56 ft at 5:00PM Dec 13, 2019Observed: 3.58 ft at 6:00PM Dec 13, 2019Observed: 3.59 ft at 8:00PM Dec 13, 2019Observed: 3.59 ft at 9:00PM Dec 13, 2019Observed: 3.6 ft at 10:00PM Dec 13, 2019Observed: 3.61 ft at 11:00PM Dec 13, 2019Observed: 3.62 ft at 12:00AM Dec 14, 2019Observed: 3.63 ft at 1:00AM Dec 14, 2019Observed: 3.65 ft at 2:00AM Dec 14, 2019Observed: 3.66 ft at 3:00AM Dec 14, 2019Observed: 3.68 ft at 4:00AM Dec 14, 2019Observed: 3.7 ft at 5:00AM Dec 14, 2019Observed: 3.71 ft at 6:00AM Dec 14, 2019Observed: 3.72 ft at 7:00AM Dec 14, 2019Observed: 3.73 ft at 8:00AM Dec 14, 2019Observed: 3.74 ft at 9:00AM Dec 14, 2019Observed: 3.76 ft at 10:00AM Dec 14, 2019Observed: 3.77 ft at 11:00AM Dec 14, 2019Observed: 3.81 ft at 12:00PM Dec 14, 2019Observed: 3.89 ft at 1:04PM Dec 14, 2019Observed: 3.9 ft at 1:15PM Dec 14, 2019Observed: 3.93 ft at 1:30PM Dec 14, 2019Observed: 3.96 ft at 1:45PM Dec 14, 2019Observed: 3.99 ft at 2:00PM Dec 14, 2019Observed: 4.02 ft at 2:15PM Dec 14, 2019Observed: 4.04 ft at 2:30PM Dec 14, 2019Observed: 4.07 ft at 2:45PM Dec 14, 2019Observed: 4.1 ft at 3:00PM Dec 14, 2019Observed: 4.12 ft at 3:15PM Dec 14, 2019Observed: 4.14 ft at 3:30PM Dec 14, 2019Observed: 4.16 ft at 3:45PM Dec 14, 2019Observed: 4.18 ft at 4:00PM Dec 14, 2019Observed: 4.2 ft at 4:15PM Dec 14, 2019Observed: 4.22 ft at 4:30PM Dec 14, 2019Observed: 4.23 ft at 4:36PM Dec 14, 2019Observed: 4.24 ft at 4:45PM Dec 14, 2019Observed: 4.28 ft at 5:15PM Dec 14, 2019Observed: 4.3 ft at 5:30PM Dec 14, 2019Observed: 4.33 ft at 5:45PM Dec 14, 2019Observed: 4.35 ft at 6:00PM Dec 14, 2019Observed: 4.38 ft at 6:15PM Dec 14, 2019Observed: 4.41 ft at 6:30PM Dec 14, 2019Observed: 4.44 ft at 6:45PM Dec 14, 2019Observed: 4.46 ft at 7:00PM Dec 14, 2019Observed: 4.49 ft at 7:15PM Dec 14, 2019Observed: 4.51 ft at 7:22PM Dec 14, 2019Observed: 4.52 ft at 7:30PM Dec 14, 2019Observed: 4.56 ft at 7:45PM Dec 14, 2019Observed: 4.59 ft at 8:00PM Dec 14, 2019Observed: 4.63 ft at 8:15PM Dec 14, 2019Observed: 4.66 ft at 8:30PM Dec 14, 2019Observed: 4.69 ft at 8:45PM Dec 14, 2019Observed: 4.72 ft at 9:00PM Dec 14, 2019Observed: 4.76 ft at 9:15PM Dec 14, 2019Observed: 4.8 ft at 9:30PM Dec 14, 2019Observed: 4.8 ft at 9:35PM Dec 14, 2019Observed: 4.84 ft at 9:45PM Dec 14, 2019Observed: 4.87 ft at 10:00PM Dec 14, 2019Observed: 4.9 ft at 10:15PM Dec 14, 2019Observed: 4.93 ft at 10:30PM Dec 14, 2019Observed: 4.95 ft at 10:45PM Dec 14, 2019Highest Observation: 5.06 ft at 2:00AM Dec 15, 2019Observed: 5.04 ft at 2:15AM Dec 15, 2019Observed: 5.03 ft at 2:30AM Dec 15, 2019Observed: 5.02 ft at 2:45AM Dec 15, 2019Observed: 5.01 ft at 2:53AM Dec 15, 2019Observed: 5 ft at 3:00AM Dec 15, 2019Observed: 4.98 ft at 3:15AM Dec 15, 2019Observed: 4.96 ft at 3:30AM Dec 15, 2019Observed: 4.94 ft at 3:45AM Dec 15, 2019Observed: 4.92 ft at 4:00AM Dec 15, 2019Observed: 4.9 ft at 4:15AM Dec 15, 2019Observed: 4.88 ft at 4:30AM Dec 15, 2019Observed: 4.87 ft at 4:43AM Dec 15, 2019Observed: 4.86 ft at 4:45AM Dec 15, 2019Observed: 4.84 ft at 5:00AM Dec 15, 2019Observed: 4.82 ft at 5:15AM Dec 15, 2019Observed: 4.79 ft at 5:30AM Dec 15, 2019Observed: 4.77 ft at 5:45AM Dec 15, 2019Observed: 4.74 ft at 6:00AM Dec 15, 2019Observed: 4.72 ft at 6:15AM Dec 15, 2019Observed: 4.7 ft at 6:30AM Dec 15, 2019Observed: 4.68 ft at 6:46AM Dec 15, 2019Observed: 4.67 ft at 7:00AM Dec 15, 2019Observed: 4.65 ft at 7:15AM Dec 15, 2019Observed: 4.63 ft at 7:30AM Dec 15, 2019Observed: 4.62 ft at 7:45AM Dec 15, 2019Observed: 4.6 ft at 8:00AM Dec 15, 2019Observed: 4.58 ft at 8:15AM Dec 15, 2019Observed: 4.55 ft at 8:30AM Dec 15, 2019Observed: 4.53 ft at 8:45AM Dec 15, 2019Observed: 4.51 ft at 9:00AM Dec 15, 2019Observed: 4.51 ft at 9:04AM Dec 15, 2019Observed: 4.5 ft at 9:15AM Dec 15, 2019Observed: 4.48 ft at 9:30AM Dec 15, 2019Observed: 4.46 ft at 9:45AM Dec 15, 2019Observed: 4.44 ft at 10:00AM Dec 15, 2019Observed: 4.43 ft at 10:15AM Dec 15, 2019Observed: 4.41 ft at 10:30AM Dec 15, 2019Observed: 4.39 ft at 10:45AM Dec 15, 2019Observed: 4.37 ft at 11:00AM Dec 15, 2019Virginia Tech Occoquan Watershed Monitoring LaboratoryMPBV2(plotting HGIRZ) Graph Created (12:54PM Dec 15, 2019)ObservedLatest observed value: 4.37 ft at 11:00 AM EST 15-Dec-2019. Flood Stage is 12 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts are not available for the Bull Run near Manassas Park. Only observed stages are available for this point.

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Upstream Gauge - near Catharpin Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 20
Flood Stage: 12
Action Stage: 11
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20 Lake Drive is flooded near Manassas in multiple locations. Two homes in the area begin to flood from overland flow. Significant flooding is occurring on trails and in backyards in the area along Bull Run.
15 Backyards are flooded along Lake Drive in Manassas, along with much of the Bull Run trail system.
12 Water covers backyards in the Yorkshire area and some items may need to be relocated to higher ground. Portions of the trail system along Bull Run in the vicinity of Yorkshire are also flooded.
About This Location Collapse

Latitude: 38.803056° N, Longitude: 77.449722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 12 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 4-Mar-2019 11:30 PM
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