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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

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Hydrograph River at a Glance Download
Pocatalico River at Sissonville Stage (ft)Flow (kcfs)Highest Observation: 2.38 ft at 2:45AM Nov 29, 2023Highest Observation: 2.38 ft at 3:00AM Nov 29, 2023Highest Observation: 2.38 ft at 3:15AM Nov 29, 2023Highest Observation: 2.38 ft at 3:30AM Nov 29, 2023Highest Observation: 2.38 ft at 3:45AM Nov 29, 2023Highest Observation: 2.38 ft at 4:00AM Nov 29, 2023Highest Observation: 2.38 ft at 4:15AM Nov 29, 2023Highest Observation: 2.38 ft at 4:30AM Nov 29, 2023Highest Observation: 2.38 ft at 4:45AM Nov 29, 2023Observed: 2.37 ft at 5:00AM Nov 29, 2023Highest Observation: 2.38 ft at 5:15AM Nov 29, 2023Observed: 2.37 ft at 5:30AM Nov 29, 2023Highest Observation: 2.38 ft at 5:45AM Nov 29, 2023Observed: 2.37 ft at 6:00AM Nov 29, 2023Highest Observation: 2.38 ft at 6:15AM Nov 29, 2023Observed: 2.37 ft at 6:30AM Nov 29, 2023Observed: 2.37 ft at 6:45AM Nov 29, 2023Observed: 2.37 ft at 7:00AM Nov 29, 2023Observed: 2.37 ft at 7:15AM Nov 29, 2023Observed: 2.37 ft at 7:30AM Nov 29, 2023Observed: 2.37 ft at 7:45AM Nov 29, 2023Observed: 2.37 ft at 8:00AM Nov 29, 2023Observed: 2.36 ft at 8:15AM Nov 29, 2023Observed: 2.37 ft at 8:30AM Nov 29, 2023Observed: 2.37 ft at 8:45AM Nov 29, 2023Observed: 2.36 ft at 9:00AM Nov 29, 2023Observed: 2.36 ft at 9:15AM Nov 29, 2023Observed: 2.37 ft at 9:30AM Nov 29, 2023Observed: 2.36 ft at 9:45AM Nov 29, 2023Observed: 2.37 ft at 10:00AM Nov 29, 2023Observed: 2.37 ft at 10:15AM Nov 29, 2023Highest Observation: 2.38 ft at 10:30AM Nov 29, 2023Observed: 2.37 ft at 10:45AM Nov 29, 2023Observed: 2.37 ft at 11:00AM Nov 29, 2023Observed: 2.37 ft at 11:15AM Nov 29, 2023Observed: 2.37 ft at 11:30AM Nov 29, 2023Observed: 2.37 ft at 11:45AM Nov 29, 2023Observed: 2.37 ft at 12:00PM Nov 29, 2023Observed: 2.37 ft at 12:15PM Nov 29, 2023Observed: 2.37 ft at 12:30PM Nov 29, 2023Observed: 2.37 ft at 12:45PM Nov 29, 2023Observed: 2.37 ft at 1:00PM Nov 29, 2023Observed: 2.37 ft at 1:15PM Nov 29, 2023Observed: 2.37 ft at 1:30PM Nov 29, 2023Observed: 2.36 ft at 1:45PM Nov 29, 2023Observed: 2.37 ft at 2:00PM Nov 29, 2023Observed: 2.37 ft at 2:15PM Nov 29, 2023Observed: 2.36 ft at 2:30PM Nov 29, 2023Observed: 2.37 ft at 2:45PM Nov 29, 2023Observed: 2.37 ft at 3:00PM Nov 29, 2023Observed: 2.37 ft at 3:15PM Nov 29, 2023Observed: 2.37 ft at 3:30PM Nov 29, 2023Observed: 2.37 ft at 3:45PM Nov 29, 2023Observed: 2.37 ft at 4:00PM Nov 29, 2023Observed: 2.36 ft at 4:15PM Nov 29, 2023Observed: 2.36 ft at 4:30PM Nov 29, 2023Observed: 2.37 ft at 4:45PM Nov 29, 2023Observed: 2.36 ft at 5:00PM Nov 29, 2023Observed: 2.36 ft at 5:15PM Nov 29, 2023Observed: 2.36 ft at 5:30PM Nov 29, 2023Observed: 2.36 ft at 5:45PM Nov 29, 2023Observed: 2.36 ft at 6:00PM Nov 29, 2023Observed: 2.36 ft at 6:15PM Nov 29, 2023Observed: 2.36 ft at 6:30PM Nov 29, 2023Observed: 2.36 ft at 6:45PM Nov 29, 2023Observed: 2.36 ft at 7:00PM Nov 29, 2023Observed: 2.36 ft at 7:15PM Nov 29, 2023Observed: 2.35 ft at 7:30PM Nov 29, 2023Observed: 2.36 ft at 7:45PM Nov 29, 2023Observed: 2.35 ft at 8:00PM Nov 29, 2023Observed: 2.35 ft at 8:15PM Nov 29, 2023Observed: 2.35 ft at 8:30PM Nov 29, 2023Observed: 2.35 ft at 8:45PM Nov 29, 2023Observed: 2.35 ft at 9:00PM Nov 29, 2023Observed: 2.35 ft at 9:15PM Nov 29, 2023Observed: 2.35 ft at 9:30PM Nov 29, 2023Observed: 2.35 ft at 9:45PM Nov 29, 2023Observed: 2.34 ft at 10:00PM Nov 29, 2023Observed: 2.34 ft at 10:15PM Nov 29, 2023Observed: 2.34 ft at 10:30PM Nov 29, 2023Observed: 2.35 ft at 10:45PM Nov 29, 2023Observed: 2.34 ft at 11:00PM Nov 29, 2023Observed: 2.34 ft at 11:15PM Nov 29, 2023Observed: 2.34 ft at 11:30PM Nov 29, 2023Observed: 2.34 ft at 11:45PM Nov 29, 2023Observed: 2.34 ft at 12:00AM Nov 30, 2023Observed: 2.34 ft at 12:15AM Nov 30, 2023Observed: 2.34 ft at 12:30AM Nov 30, 2023Observed: 2.34 ft at 12:45AM Nov 30, 2023Observed: 2.34 ft at 1:00AM Nov 30, 2023Observed: 2.33 ft at 1:15AM Nov 30, 2023Observed: 2.34 ft at 1:30AM Nov 30, 2023Observed: 2.34 ft at 1:45AM Nov 30, 2023Observed: 2.33 ft at 2:00AM Nov 30, 2023Observed: 2.33 ft at 2:15AM Nov 30, 2023Observed: 2.33 ft at 2:30AM Nov 30, 2023Observed: 2.33 ft at 2:45AM Nov 30, 2023Observed: 2.33 ft at 3:00AM Nov 30, 2023Observed: 2.33 ft at 3:15AM Nov 30, 2023Observed: 2.33 ft at 3:30AM Nov 30, 2023Observed: 2.33 ft at 3:45AM Nov 30, 2023Observed: 2.32 ft at 4:00AM Nov 30, 2023Observed: 2.33 ft at 4:15AM Nov 30, 2023Observed: 2.32 ft at 4:30AM Nov 30, 2023Observed: 2.32 ft at 4:45AM Nov 30, 2023Observed: 2.33 ft at 5:00AM Nov 30, 2023Observed: 2.32 ft at 5:15AM Nov 30, 2023Observed: 2.32 ft at 5:30AM Nov 30, 2023Observed: 2.32 ft at 5:45AM Nov 30, 2023Observed: 2.32 ft at 6:00AM Nov 30, 2023Observed: 2.32 ft at 6:15AM Nov 30, 2023Observed: 2.32 ft at 6:30AM Nov 30, 2023Observed: 2.32 ft at 6:45AM Nov 30, 2023Observed: 2.32 ft at 7:00AM Nov 30, 2023Observed: 2.32 ft at 7:15AM Nov 30, 2023Observed: 2.32 ft at 7:30AM Nov 30, 2023Observed: 2.31 ft at 7:45AM Nov 30, 2023Observed: 2.31 ft at 8:00AM Nov 30, 2023Observed: 2.31 ft at 8:15AM Nov 30, 2023Observed: 2.32 ft at 8:30AM Nov 30, 2023Observed: 2.31 ft at 8:45AM Nov 30, 2023Observed: 2.31 ft at 9:00AM Nov 30, 2023Observed: 2.31 ft at 9:15AM Nov 30, 2023Observed: 2.31 ft at 9:30AM Nov 30, 2023Observed: 2.31 ft at 9:45AM Nov 30, 2023Observed: 2.32 ft at 10:00AM Nov 30, 2023Observed: 2.32 ft at 10:15AM Nov 30, 2023Observed: 2.31 ft at 10:30AM Nov 30, 2023Observed: 2.32 ft at 10:45AM Nov 30, 2023Observed: 2.32 ft at 11:00AM Nov 30, 2023Observed: 2.31 ft at 11:15AM Nov 30, 2023Observed: 2.32 ft at 11:30AM Nov 30, 2023Observed: 2.32 ft at 11:45AM Nov 30, 2023Observed: 2.32 ft at 12:00PM Nov 30, 2023Observed: 2.31 ft at 12:15PM Nov 30, 2023Observed: 2.31 ft at 12:30PM Nov 30, 2023Observed: 2.31 ft at 12:45PM Nov 30, 2023Observed: 2.31 ft at 1:00PM Nov 30, 2023Observed: 2.31 ft at 1:15PM Nov 30, 2023Observed: 2.31 ft at 1:30PM Nov 30, 2023Observed: 2.31 ft at 1:45PM Nov 30, 2023Observed: 2.31 ft at 2:00PM Nov 30, 2023Observed: 2.31 ft at 2:15PM Nov 30, 2023Observed: 2.31 ft at 2:30PM Nov 30, 2023Observed: 2.31 ft at 2:45PM Nov 30, 2023Observed: 2.31 ft at 3:00PM Nov 30, 2023Observed: 2.3 ft at 3:15PM Nov 30, 2023Observed: 2.31 ft at 3:30PM Nov 30, 2023Observed: 2.3 ft at 3:45PM Nov 30, 2023Observed: 2.3 ft at 4:00PM Nov 30, 2023Observed: 2.3 ft at 4:15PM Nov 30, 2023Observed: 2.29 ft at 4:30PM Nov 30, 2023Observed: 2.29 ft at 4:45PM Nov 30, 2023Observed: 2.3 ft at 5:00PM Nov 30, 2023Observed: 2.3 ft at 5:15PM Nov 30, 2023Observed: 2.3 ft at 5:30PM Nov 30, 2023Observed: 2.3 ft at 5:45PM Nov 30, 2023Observed: 2.3 ft at 6:00PM Nov 30, 2023Observed: 2.3 ft at 6:15PM Nov 30, 2023Observed: 2.29 ft at 6:30PM Nov 30, 2023Observed: 2.29 ft at 6:45PM Nov 30, 2023Observed: 2.29 ft at 7:00PM Nov 30, 2023Observed: 2.3 ft at 7:15PM Nov 30, 2023Observed: 2.3 ft at 7:30PM Nov 30, 2023Observed: 2.29 ft at 7:45PM Nov 30, 2023Observed: 2.29 ft at 8:00PM Nov 30, 2023Observed: 2.29 ft at 8:15PM Nov 30, 2023Observed: 2.29 ft at 8:30PM Nov 30, 2023Observed: 2.29 ft at 8:45PM Nov 30, 2023Observed: 2.29 ft at 9:00PM Nov 30, 2023Observed: 2.28 ft at 9:15PM Nov 30, 2023Observed: 2.28 ft at 9:30PM Nov 30, 2023Observed: 2.28 ft at 9:45PM Nov 30, 2023Observed: 2.28 ft at 10:00PM Nov 30, 2023Observed: 2.28 ft at 10:15PM Nov 30, 2023Observed: 2.28 ft at 10:30PM Nov 30, 2023Observed: 2.28 ft at 10:45PM Nov 30, 2023Observed: 2.28 ft at 11:00PM Nov 30, 2023Observed: 2.28 ft at 11:15PM Nov 30, 2023Observed: 2.28 ft at 11:30PM Nov 30, 2023Observed: 2.28 ft at 11:45PM Nov 30, 2023Observed: 2.28 ft at 12:00AM Dec 01, 2023Observed: 2.28 ft at 12:15AM Dec 01, 2023Observed: 2.27 ft at 12:30AM Dec 01, 2023Observed: 2.27 ft at 12:45AM Dec 01, 2023Observed: 2.28 ft at 1:00AM Dec 01, 2023Observed: 2.27 ft at 1:15AM Dec 01, 2023Observed: 2.28 ft at 1:30AM Dec 01, 2023Observed: 2.27 ft at 1:45AM Dec 01, 2023Observed: 2.27 ft at 2:00AM Dec 01, 2023Observed: 2.27 ft at 2:15AM Dec 01, 2023Observed: 2.27 ft at 2:30AM Dec 01, 2023Observed: 2.27 ft at 2:45AM Dec 01, 2023Observed: 2.27 ft at 3:00AM Dec 01, 2023Observed: 2.27 ft at 3:15AM Dec 01, 2023Observed: 2.27 ft at 3:30AM Dec 01, 2023Observed: 2.27 ft at 3:45AM Dec 01, 2023Observed: 2.27 ft at 4:00AM Dec 01, 2023Observed: 2.27 ft at 4:15AM Dec 01, 2023Observed: 2.27 ft at 4:30AM Dec 01, 2023Observed: 2.27 ft at 4:45AM Dec 01, 2023Observed: 2.27 ft at 5:00AM Dec 01, 2023Observed: 2.27 ft at 5:15AM Dec 01, 2023Observed: 2.27 ft at 5:30AM Dec 01, 2023Observed: 2.27 ft at 5:45AM Dec 01, 2023Observed: 2.27 ft at 6:00AM Dec 01, 2023Observed: 2.27 ft at 6:15AM Dec 01, 2023Observed: 2.27 ft at 6:30AM Dec 01, 2023Observed: 2.26 ft at 6:45AM Dec 01, 2023Observed: 2.27 ft at 7:00AM Dec 01, 2023Observed: 2.26 ft at 7:15AM Dec 01, 2023Observed: 2.26 ft at 7:30AM Dec 01, 2023Observed: 2.26 ft at 7:45AM Dec 01, 2023Observed: 2.26 ft at 8:00AM Dec 01, 2023Observed: 2.26 ft at 8:15AM Dec 01, 2023Observed: 2.26 ft at 8:30AM Dec 01, 2023Observed: 2.26 ft at 8:45AM Dec 01, 2023Observed: 2.27 ft at 9:00AM Dec 01, 2023Observed: 2.27 ft at 9:15AM Dec 01, 2023Observed: 2.27 ft at 9:30AM Dec 01, 2023Observed: 2.27 ft at 9:45AM Dec 01, 2023Observed: 2.27 ft at 10:00AM Dec 01, 2023Observed: 2.26 ft at 10:15AM Dec 01, 2023Observed: 2.26 ft at 10:30AM Dec 01, 2023Observed: 2.26 ft at 10:45AM Dec 01, 2023Observed: 2.26 ft at 11:00AM Dec 01, 2023Observed: 2.26 ft at 11:15AM Dec 01, 2023Observed: 2.27 ft at 11:30AM Dec 01, 2023Observed: 2.26 ft at 11:45AM Dec 01, 2023Observed: 2.26 ft at 12:00PM Dec 01, 2023Observed: 2.26 ft at 12:15PM Dec 01, 2023Observed: 2.27 ft at 12:30PM Dec 01, 2023Observed: 2.26 ft at 12:45PM Dec 01, 2023Observed: 2.26 ft at 1:00PM Dec 01, 2023Observed: 2.26 ft at 1:15PM Dec 01, 2023Observed: 2.27 ft at 1:30PM Dec 01, 2023Observed: 2.26 ft at 1:45PM Dec 01, 2023Observed: 2.26 ft at 2:00PM Dec 01, 2023Observed: 2.26 ft at 2:15PM Dec 01, 2023Observed: 2.26 ft at 2:30PM Dec 01, 2023Observed: 2.26 ft at 2:45PM Dec 01, 2023Observed: 2.26 ft at 3:00PM Dec 01, 2023Observed: 2.25 ft at 3:15PM Dec 01, 2023Observed: 2.26 ft at 3:30PM Dec 01, 2023Observed: 2.26 ft at 3:45PM Dec 01, 2023Observed: 2.26 ft at 4:00PM Dec 01, 2023Observed: 2.26 ft at 4:15PM Dec 01, 2023Observed: 2.26 ft at 4:30PM Dec 01, 2023Observed: 2.26 ft at 4:45PM Dec 01, 2023Observed: 2.25 ft at 5:00PM Dec 01, 2023Observed: 2.26 ft at 5:15PM Dec 01, 2023Observed: 2.26 ft at 5:30PM Dec 01, 2023Observed: 2.26 ft at 5:45PM Dec 01, 2023Observed: 2.26 ft at 6:00PM Dec 01, 2023Observed: 2.26 ft at 6:15PM Dec 01, 2023Observed: 2.26 ft at 6:30PM Dec 01, 2023Observed: 2.26 ft at 6:45PM Dec 01, 2023Observed: 2.26 ft at 7:00PM Dec 01, 2023Observed: 2.26 ft at 7:15PM Dec 01, 2023Observed: 2.25 ft at 7:30PM Dec 01, 2023Observed: 2.26 ft at 7:45PM Dec 01, 2023Observed: 2.26 ft at 8:00PM Dec 01, 2023Observed: 2.26 ft at 8:15PM Dec 01, 2023Observed: 2.26 ft at 8:30PM Dec 01, 2023Observed: 2.26 ft at 8:45PM Dec 01, 2023Observed: 2.26 ft at 9:00PM Dec 01, 2023Observed: 2.26 ft at 9:15PM Dec 01, 2023Observed: 2.26 ft at 9:30PM Dec 01, 2023Observed: 2.26 ft at 9:45PM Dec 01, 2023Observed: 2.25 ft at 10:00PM Dec 01, 2023Observed: 2.26 ft at 10:15PM Dec 01, 2023Observed: 2.26 ft at 10:30PM Dec 01, 2023Observed: 2.26 ft at 10:45PM Dec 01, 2023Observed: 2.25 ft at 11:00PM Dec 01, 2023Observed: 2.26 ft at 11:15PM Dec 01, 2023Observed: 2.26 ft at 11:30PM Dec 01, 2023Observed: 2.26 ft at 11:45PM Dec 01, 2023Observed: 2.26 ft at 12:00AM Dec 02, 2023Observed: 2.26 ft at 12:15AM Dec 02, 2023Observed: 2.26 ft at 12:30AM Dec 02, 2023Observed: 2.26 ft at 12:45AM Dec 02, 2023Observed: 2.26 ft at 1:00AM Dec 02, 2023Observed: 2.25 ft at 1:15AM Dec 02, 2023Observed: 2.26 ft at 1:30AM Dec 02, 2023Observed: 2.26 ft at 1:45AM Dec 02, 2023SISW2(plotting HGIRG) Graph Created (2:34AM Dec 2, 2023)ObservedLatest observed value: 2.26 ft at 1:45 AM EST 2-Dec-2023. Flood Stage is 30 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts are not available for the Pocatalico River at Sissonville. Only observed stages are available for this point.

Vertical datum height surveyed by the USGS

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 35
Moderate Flood Stage: 33
Flood Stage: 30
Action Stage: 28
Low Stage (in feet): -9999

Historic Crests
(1) 35.70 ft on 06/29/1998
(2) 34.79 ft on 03/02/1997
(3) 34.40 ft on 04/16/1939
(4) 33.00 ft on 06/27/1910
(5) 32.91 ft on 03/07/1967
(6) 31.87 ft on 03/01/2021
(7) 31.80 ft on 01/26/1978
(8) 28.88 ft on 02/18/1956
(9) 28.87 ft on 02/01/1951
(10) 28.20 ft on 06/27/1940
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 31.87 ft on 03/01/2021
(2) 27.39 ft on 06/22/2018
(3) 26.64 ft on 06/24/2016
(4) 25.50 ft on 03/05/2015
(5) 35.70 ft on 06/29/1998
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.68 ft on 06/13/1999
(2) 1.96 ft on 09/02/2015

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
37 Major flooding in Sissonville. Route 21 and several roads along the river are flooded.
35 Route 21 near the Pocatalico River bridge is flooded both north and south. Homes near the river and the Route 21 Bridge are flooded. Low areas near the Haines Branch Exit of I-77 starts to flood.
33 Homes near the Route 21 bridge are flooded. Side roads along the river are flooded.
30 Intersection of Route 21 and Old Mill Road begins to flood at 30 feet. Upon this level being reached, water will also flow down Route 21 and fill in low spots 50 to 100 feet away from the Route 21 bridge and will start to flood homes and equipment storage area on both sides of Route 21. Homes and fields along Old Mill Road will start to flood.
About This Location Collapse

Latitude: 38.526111° N, Longitude: 81.631389° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 30 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 593.73 623.73 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 594.56 624.56 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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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
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Page last modified: 2-Nov-2020 7:30 PM
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