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Hydrograph River at a Glance Download Inundation
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Susquehanna River at Sunbury Stage (ft)Flow (kcfs)Highest Observation: 6.19 ft at 6:15AM Jul 31, 2020Observed: 6.18 ft at 6:30AM Jul 31, 2020Observed: 6.18 ft at 6:45AM Jul 31, 2020Observed: 6.17 ft at 7:00AM Jul 31, 2020Observed: 6.17 ft at 7:15AM Jul 31, 2020Observed: 6.17 ft at 7:30AM Jul 31, 2020Observed: 6.17 ft at 7:45AM Jul 31, 2020Observed: 6.17 ft at 8:00AM Jul 31, 2020Observed: 6.17 ft at 8:15AM Jul 31, 2020Observed: 6.17 ft at 8:30AM Jul 31, 2020Observed: 6.18 ft at 8:45AM Jul 31, 2020Observed: 6.18 ft at 9:00AM Jul 31, 2020Highest Observation: 6.19 ft at 9:15AM Jul 31, 2020Highest Observation: 6.19 ft at 9:30AM Jul 31, 2020Highest Observation: 6.19 ft at 9:45AM Jul 31, 2020Highest Observation: 6.19 ft at 10:00AM Jul 31, 2020Highest Observation: 6.19 ft at 10:15AM Jul 31, 2020Highest Observation: 6.19 ft at 10:30AM Jul 31, 2020Highest Observation: 6.19 ft at 10:45AM Jul 31, 2020Highest Observation: 6.19 ft at 11:00AM Jul 31, 2020Highest Observation: 6.19 ft at 11:15AM Jul 31, 2020Observed: 6.18 ft at 11:30AM Jul 31, 2020Observed: 6.18 ft at 11:45AM Jul 31, 2020Observed: 6.18 ft at 12:00PM Jul 31, 2020Observed: 6.18 ft at 12:15PM Jul 31, 2020Observed: 6.17 ft at 12:30PM Jul 31, 2020Observed: 6.17 ft at 12:45PM Jul 31, 2020Observed: 6.17 ft at 1:00PM Jul 31, 2020Observed: 6.17 ft at 1:01PM Jul 31, 2020Observed: 6.17 ft at 1:15PM Jul 31, 2020Observed: 6.17 ft at 1:30PM Jul 31, 2020Observed: 6.16 ft at 1:45PM Jul 31, 2020Observed: 6.16 ft at 2:00PM Jul 31, 2020Observed: 6.16 ft at 2:15PM Jul 31, 2020Observed: 6.15 ft at 2:30PM Jul 31, 2020Observed: 6.15 ft at 2:45PM Jul 31, 2020Observed: 6.15 ft at 3:00PM Jul 31, 2020Observed: 6.15 ft at 3:15PM Jul 31, 2020Observed: 6.15 ft at 3:30PM Jul 31, 2020Observed: 6.15 ft at 3:45PM Jul 31, 2020Observed: 6.16 ft at 4:00PM Jul 31, 2020Observed: 6.16 ft at 4:15PM Jul 31, 2020Observed: 6.16 ft at 4:30PM Jul 31, 2020Observed: 6.16 ft at 4:45PM Jul 31, 2020Observed: 6.17 ft at 5:00PM Jul 31, 2020Observed: 6.17 ft at 5:15PM Jul 31, 2020Observed: 6.17 ft at 5:30PM Jul 31, 2020Observed: 6.17 ft at 5:45PM Jul 31, 2020Observed: 6.18 ft at 6:00PM Jul 31, 2020Observed: 6.18 ft at 6:15PM Jul 31, 2020Observed: 6.18 ft at 6:30PM Jul 31, 2020Observed: 6.18 ft at 6:45PM Jul 31, 2020Observed: 6.17 ft at 7:00PM Jul 31, 2020Observed: 6.17 ft at 7:15PM Jul 31, 2020Observed: 6.17 ft at 7:30PM Jul 31, 2020Observed: 6.17 ft at 7:45PM Jul 31, 2020Observed: 6.17 ft at 8:00PM Jul 31, 2020Observed: 6.17 ft at 8:15PM Jul 31, 2020Observed: 6.17 ft at 8:30PM Jul 31, 2020Observed: 6.16 ft at 8:45PM Jul 31, 2020Observed: 6.16 ft at 9:00PM Jul 31, 2020Observed: 6.15 ft at 9:15PM Jul 31, 2020Observed: 6.15 ft at 9:30PM Jul 31, 2020Observed: 6.15 ft at 9:45PM Jul 31, 2020Observed: 6.14 ft at 10:00PM Jul 31, 2020Observed: 6.14 ft at 10:15PM Jul 31, 2020Observed: 6.13 ft at 10:30PM Jul 31, 2020Observed: 6.14 ft at 10:45PM Jul 31, 2020Observed: 6.13 ft at 11:00PM Jul 31, 2020Observed: 6.13 ft at 11:15PM Jul 31, 2020Observed: 6.13 ft at 11:30PM Jul 31, 2020Observed: 6.13 ft at 11:45PM Jul 31, 2020Observed: 6.13 ft at 12:00AM Aug 01, 2020Observed: 6.13 ft at 12:15AM Aug 01, 2020Observed: 6.13 ft at 12:30AM Aug 01, 2020Observed: 6.13 ft at 12:45AM Aug 01, 2020Observed: 6.14 ft at 1:00AM Aug 01, 2020Observed: 6.14 ft at 1:15AM Aug 01, 2020Observed: 6.14 ft at 1:30AM Aug 01, 2020Observed: 6.14 ft at 1:45AM Aug 01, 2020Observed: 6.14 ft at 2:00AM Aug 01, 2020Observed: 6.14 ft at 2:15AM Aug 01, 2020Observed: 6.14 ft at 2:30AM Aug 01, 2020Observed: 6.14 ft at 2:45AM Aug 01, 2020Observed: 6.14 ft at 3:00AM Aug 01, 2020Observed: 6.14 ft at 3:15AM Aug 01, 2020Observed: 6.14 ft at 3:30AM Aug 01, 2020Observed: 6.14 ft at 3:45AM Aug 01, 2020Observed: 6.14 ft at 4:00AM Aug 01, 2020Observed: 6.14 ft at 4:15AM Aug 01, 2020Observed: 6.14 ft at 4:30AM Aug 01, 2020Observed: 6.13 ft at 4:45AM Aug 01, 2020Observed: 6.13 ft at 5:00AM Aug 01, 2020Observed: 6.13 ft at 5:15AM Aug 01, 2020Observed: 6.12 ft at 5:30AM Aug 01, 2020Observed: 6.12 ft at 5:45AM Aug 01, 2020Observed: 6.12 ft at 6:00AM Aug 01, 2020Observed: 6.12 ft at 6:15AM Aug 01, 2020Observed: 6.12 ft at 6:30AM Aug 01, 2020Observed: 6.12 ft at 6:45AM Aug 01, 2020Observed: 6.12 ft at 7:00AM Aug 01, 2020Observed: 6.12 ft at 7:15AM Aug 01, 2020Observed: 6.12 ft at 7:30AM Aug 01, 2020Observed: 6.12 ft at 7:45AM Aug 01, 2020Observed: 6.12 ft at 8:00AM Aug 01, 2020Observed: 6.12 ft at 8:15AM Aug 01, 2020Observed: 6.12 ft at 8:30AM Aug 01, 2020Observed: 6.12 ft at 8:45AM Aug 01, 2020Observed: 6.12 ft at 9:00AM Aug 01, 2020Observed: 6.12 ft at 9:15AM Aug 01, 2020Observed: 6.12 ft at 9:30AM Aug 01, 2020Observed: 6.1 ft at 9:45AM Aug 01, 2020Observed: 6.07 ft at 10:00AM Aug 01, 2020Observed: 6.04 ft at 10:15AM Aug 01, 2020Observed: 6.02 ft at 10:30AM Aug 01, 2020Observed: 6 ft at 10:45AM Aug 01, 2020Observed: 6 ft at 11:00AM Aug 01, 2020Observed: 5.99 ft at 11:15AM Aug 01, 2020Observed: 5.99 ft at 11:30AM Aug 01, 2020Observed: 5.99 ft at 11:45AM Aug 01, 2020Observed: 5.99 ft at 12:00PM Aug 01, 2020Observed: 5.99 ft at 12:15PM Aug 01, 2020Observed: 6 ft at 12:30PM Aug 01, 2020Observed: 6 ft at 12:45PM Aug 01, 2020Observed: 6.01 ft at 1:00PM Aug 01, 2020Observed: 6.01 ft at 1:01PM Aug 01, 2020Observed: 6.02 ft at 1:15PM Aug 01, 2020Observed: 6.02 ft at 1:30PM Aug 01, 2020Observed: 6.03 ft at 1:45PM Aug 01, 2020Observed: 6.03 ft at 2:00PM Aug 01, 2020Observed: 6.03 ft at 2:15PM Aug 01, 2020Observed: 6.03 ft at 2:30PM Aug 01, 2020Observed: 6.04 ft at 2:45PM Aug 01, 2020Observed: 6.04 ft at 3:00PM Aug 01, 2020Observed: 6.05 ft at 3:15PM Aug 01, 2020Observed: 6.06 ft at 3:30PM Aug 01, 2020Observed: 6.07 ft at 3:45PM Aug 01, 2020Observed: 6.07 ft at 4:00PM Aug 01, 2020Observed: 6.08 ft at 4:15PM Aug 01, 2020Observed: 6.09 ft at 4:30PM Aug 01, 2020Observed: 6.09 ft at 4:45PM Aug 01, 2020Observed: 6.09 ft at 5:00PM Aug 01, 2020Observed: 6.09 ft at 5:15PM Aug 01, 2020Observed: 6.08 ft at 5:30PM Aug 01, 2020Observed: 6.08 ft at 5:45PM Aug 01, 2020Observed: 6.09 ft at 6:00PM Aug 01, 2020Observed: 6.09 ft at 6:15PM Aug 01, 2020Observed: 6.09 ft at 6:30PM Aug 01, 2020Observed: 6.09 ft at 6:45PM Aug 01, 2020Observed: 6.09 ft at 7:00PM Aug 01, 2020Observed: 6.09 ft at 7:15PM Aug 01, 2020Observed: 6.09 ft at 7:30PM Aug 01, 2020Observed: 6.09 ft at 7:45PM Aug 01, 2020Observed: 6.09 ft at 8:00PM Aug 01, 2020Observed: 6.1 ft at 8:15PM Aug 01, 2020Observed: 6.1 ft at 8:30PM Aug 01, 2020Observed: 6.1 ft at 8:45PM Aug 01, 2020Observed: 6.11 ft at 9:00PM Aug 01, 2020Observed: 6.11 ft at 9:15PM Aug 01, 2020Observed: 6.11 ft at 9:30PM Aug 01, 2020Observed: 6.11 ft at 9:45PM Aug 01, 2020Observed: 6.11 ft at 10:00PM Aug 01, 2020Observed: 6.11 ft at 10:15PM Aug 01, 2020Observed: 6.12 ft at 10:30PM Aug 01, 2020Observed: 6.13 ft at 10:45PM Aug 01, 2020Observed: 6.12 ft at 11:00PM Aug 01, 2020Observed: 6.11 ft at 11:15PM Aug 01, 2020Observed: 6.09 ft at 11:30PM Aug 01, 2020Observed: 6.09 ft at 11:45PM Aug 01, 2020Observed: 6.09 ft at 12:00AM Aug 02, 2020Observed: 6.09 ft at 12:15AM Aug 02, 2020Observed: 6.1 ft at 12:30AM Aug 02, 2020Observed: 6.1 ft at 12:45AM Aug 02, 2020Observed: 6.11 ft at 1:00AM Aug 02, 2020Observed: 6.12 ft at 1:15AM Aug 02, 2020Observed: 6.12 ft at 1:30AM Aug 02, 2020Observed: 6.12 ft at 1:45AM Aug 02, 2020Observed: 6.13 ft at 2:00AM Aug 02, 2020Observed: 6.13 ft at 2:15AM Aug 02, 2020Observed: 6.13 ft at 2:30AM Aug 02, 2020Observed: 6.13 ft at 2:45AM Aug 02, 2020Observed: 6.13 ft at 3:00AM Aug 02, 2020Observed: 6.13 ft at 3:15AM Aug 02, 2020Observed: 6.13 ft at 3:30AM Aug 02, 2020Observed: 6.13 ft at 3:45AM Aug 02, 2020Observed: 6.12 ft at 4:00AM Aug 02, 2020Observed: 6.12 ft at 4:15AM Aug 02, 2020Observed: 6.12 ft at 4:30AM Aug 02, 2020Observed: 6.12 ft at 4:45AM Aug 02, 2020Observed: 6.12 ft at 5:00AM Aug 02, 2020Observed: 6.11 ft at 5:15AM Aug 02, 2020Observed: 6.11 ft at 5:30AM Aug 02, 2020Observed: 6.11 ft at 5:45AM Aug 02, 2020Observed: 6.11 ft at 6:00AM Aug 02, 2020Observed: 6.11 ft at 6:15AM Aug 02, 2020Observed: 6.11 ft at 6:30AM Aug 02, 2020Observed: 6.11 ft at 6:45AM Aug 02, 2020Observed: 6.1 ft at 7:00AM Aug 02, 2020Observed: 6.1 ft at 7:15AM Aug 02, 2020Observed: 6.1 ft at 7:30AM Aug 02, 2020Observed: 6.1 ft at 7:45AM Aug 02, 2020Observed: 6.09 ft at 8:00AM Aug 02, 2020Observed: 6.09 ft at 8:15AM Aug 02, 2020Observed: 6.1 ft at 8:30AM Aug 02, 2020Observed: 6.09 ft at 8:45AM Aug 02, 2020Observed: 6.08 ft at 9:00AM Aug 02, 2020Observed: 6.07 ft at 9:15AM Aug 02, 2020Observed: 6.05 ft at 9:30AM Aug 02, 2020Observed: 6.04 ft at 9:45AM Aug 02, 2020Observed: 6.03 ft at 10:00AM Aug 02, 2020Observed: 6.02 ft at 10:15AM Aug 02, 2020Observed: 6.01 ft at 10:30AM Aug 02, 2020Observed: 6 ft at 10:45AM Aug 02, 2020Observed: 6 ft at 11:00AM Aug 02, 2020Observed: 6 ft at 11:15AM Aug 02, 2020Observed: 6 ft at 11:30AM Aug 02, 2020Observed: 6 ft at 11:45AM Aug 02, 2020Observed: 6 ft at 12:00PM Aug 02, 2020Observed: 6 ft at 12:15PM Aug 02, 2020Observed: 6 ft at 12:30PM Aug 02, 2020Observed: 6 ft at 12:45PM Aug 02, 2020Observed: 6.01 ft at 1:00PM Aug 02, 2020Observed: 6 ft at 1:15PM Aug 02, 2020Observed: 5.98 ft at 1:30PM Aug 02, 2020Observed: 5.97 ft at 1:45PM Aug 02, 2020Observed: 5.97 ft at 2:00PM Aug 02, 2020Observed: 5.95 ft at 2:15PM Aug 02, 2020Observed: 5.94 ft at 2:30PM Aug 02, 2020Observed: 5.94 ft at 2:45PM Aug 02, 2020Observed: 5.95 ft at 3:00PM Aug 02, 2020Observed: 5.96 ft at 3:15PM Aug 02, 2020Observed: 5.96 ft at 3:30PM Aug 02, 2020Observed: 5.98 ft at 3:45PM Aug 02, 2020Observed: 5.98 ft at 4:00PM Aug 02, 2020Observed: 5.99 ft at 4:15PM Aug 02, 2020Observed: 6 ft at 4:30PM Aug 02, 2020Observed: 6 ft at 4:45PM Aug 02, 2020Observed: 6.01 ft at 5:00PM Aug 02, 2020Observed: 6.02 ft at 5:15PM Aug 02, 2020Observed: 6.03 ft at 5:30PM Aug 02, 2020Observed: 6.05 ft at 5:45PM Aug 02, 2020Observed: 6.07 ft at 6:00PM Aug 02, 2020Observed: 6.09 ft at 6:15PM Aug 02, 2020Observed: 6.11 ft at 6:30PM Aug 02, 2020Observed: 6.11 ft at 6:45PM Aug 02, 2020Observed: 6.11 ft at 7:00PM Aug 02, 2020Observed: 6.11 ft at 7:15PM Aug 02, 2020Observed: 6.12 ft at 7:30PM Aug 02, 2020Observed: 6.13 ft at 7:45PM Aug 02, 2020Observed: 6.13 ft at 8:00PM Aug 02, 2020Observed: 6.14 ft at 8:15PM Aug 02, 2020Observed: 6.14 ft at 8:30PM Aug 02, 2020Observed: 6.14 ft at 8:45PM Aug 02, 2020Observed: 6.14 ft at 9:00PM Aug 02, 2020Observed: 6.14 ft at 9:15PM Aug 02, 2020Observed: 6.13 ft at 9:30PM Aug 02, 2020Observed: 6.13 ft at 9:45PM Aug 02, 2020Observed: 6.14 ft at 10:00PM Aug 02, 2020Observed: 6.14 ft at 10:15PM Aug 02, 2020Observed: 6.14 ft at 10:30PM Aug 02, 2020Observed: 6.14 ft at 10:45PM Aug 02, 2020Observed: 6.14 ft at 11:00PM Aug 02, 2020Observed: 6.13 ft at 11:15PM Aug 02, 2020Observed: 6.13 ft at 11:30PM Aug 02, 2020Observed: 6.12 ft at 11:45PM Aug 02, 2020Observed: 6.11 ft at 12:00AM Aug 03, 2020Observed: 6.11 ft at 12:15AM Aug 03, 2020Observed: 6.1 ft at 12:30AM Aug 03, 2020Observed: 6.1 ft at 12:45AM Aug 03, 2020Observed: 6.09 ft at 1:00AM Aug 03, 2020Observed: 6.08 ft at 1:15AM Aug 03, 2020Observed: 6.08 ft at 1:30AM Aug 03, 2020Observed: 6.08 ft at 1:45AM Aug 03, 2020Observed: 6.07 ft at 2:00AM Aug 03, 2020Observed: 6.07 ft at 2:15AM Aug 03, 2020Observed: 6.07 ft at 2:30AM Aug 03, 2020Observed: 6.06 ft at 2:45AM Aug 03, 2020Observed: 6.06 ft at 3:00AM Aug 03, 2020Observed: 6.05 ft at 3:15AM Aug 03, 2020Observed: 6.04 ft at 3:30AM Aug 03, 2020Observed: 6.04 ft at 3:45AM Aug 03, 2020Observed: 6.04 ft at 4:00AM Aug 03, 2020Observed: 6.04 ft at 4:15AM Aug 03, 2020Observed: 6.04 ft at 4:30AM Aug 03, 2020Observed: 6.04 ft at 4:45AM Aug 03, 2020Forecast: 6 ft 8:00AM Aug 03, 2020Forecast: 6.1 ft 2:00PM Aug 03, 2020Forecast: 6.1 ft 8:00PM Aug 03, 2020Forecast: 6.1 ft 2:00AM Aug 04, 2020Forecast: 6.1 ft 8:00AM Aug 04, 2020Forecast: 6.2 ft 2:00PM Aug 04, 2020Forecast: 6.4 ft 8:00PM Aug 04, 2020Forecast: 6.6 ft 2:00AM Aug 05, 2020Forecast: 6.8 ft 8:00AM Aug 05, 2020Highest Forecast: 7.1 ft 2:00PM Aug 05, 2020USGS--Water Resources of the United StatesSBYP1(plotting HGIRG) Graph Created (6:02AM Aug 3, 2020)ObservedForecast (issued 3:19PM Aug 2)Latest observed value: 6.04 ft at 4:45 AM EDT 3-Aug-2020. Flood Stage is 24 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Susquehanna River at Sunbury are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Danville Upstream Gauge Downstream Gauge Downstream Gauge - at Harrisburg
Flood Categories (in feet)
Major Flood Stage: 34
Moderate Flood Stage: 26
Flood Stage: 24
Action Stage: 20
Low Stage (in feet): 0

Historic Crests
(1) 35.80 ft on 06/24/1972
(2) 31.66 ft on 09/09/2011
(3) 30.62 ft on 09/27/1975
(4) 30.44 ft on 09/19/2004
(5) 30.32 ft on 01/20/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.17 ft on 09/12/2018
(2) 21.73 ft on 08/15/2018
(3) 22.16 ft on 07/26/2018
(4) 31.66 ft on 09/09/2011
(5) 25.58 ft on 04/29/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 4.83 ft on 10/16/1971
(2) 5.16 ft on 08/06/1983
(3) 5.60 ft on 09/30/1980

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

Zoom Level:13
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
35 Widespread catastrophic flooding occurs in areas outside the flood wall and levee system. This is the design height of the flood protection works anround Sunbury.
34 Most areas adjacent to the river, which are not protected by the flood wall and levee system, are affected by high water. Catasrophic flooding occurs in some of these areas.
32 Widespread flooding occurs in areas not protected by the flood wall and levee system. Many homes and businesses are affected.
30 Widespread flooding occurs in areas not protected by the flood wall and levee system. Many homes and businesses are affected.
28 Widespread flooding occurs in areas not protected by the flood wall and levee system. Many homes and businesses are affected.
26 High water affects a number of homes and businesses in areas not protected by the flood wall and levee system.
24 Both banks overflow. Areas not protected by the flood wall and levee system are affected.
22 River interests are encouraged to monitor conditions for further rises.
20 River interests are encouraged to monitor conditions for further rises. Shilellimy State Park closed due to high water.
Photos
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream
About This Location Collapse

Latitude: 40.834444° N, Longitude: 76.826944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 24 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 29 408.61 432.61 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:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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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
State College Weather Forecast Office
328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 231-2408
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Page last modified: 1-Mar-2019 12:35 AM
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