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Hydrograph River at a Glance Download
Frankstown Branch Juniata River at Williamsburg Stage (ft)Flow (kcfs)Highest Observation: 4.15 ft at 7:30AM May 06, 2021Highest Observation: 4.15 ft at 7:45AM May 06, 2021Observed: 4.14 ft at 8:00AM May 06, 2021Observed: 4.13 ft at 8:15AM May 06, 2021Observed: 4.13 ft at 8:30AM May 06, 2021Observed: 4.12 ft at 8:45AM May 06, 2021Observed: 4.12 ft at 9:00AM May 06, 2021Observed: 4.11 ft at 9:15AM May 06, 2021Observed: 4.11 ft at 9:30AM May 06, 2021Observed: 4.1 ft at 9:45AM May 06, 2021Observed: 4.1 ft at 10:00AM May 06, 2021Observed: 4.09 ft at 10:15AM May 06, 2021Observed: 4.09 ft at 10:30AM May 06, 2021Observed: 4.09 ft at 10:45AM May 06, 2021Observed: 4.08 ft at 11:00AM May 06, 2021Observed: 4.08 ft at 11:15AM May 06, 2021Observed: 4.07 ft at 11:30AM May 06, 2021Observed: 4.07 ft at 11:45AM May 06, 2021Observed: 4.07 ft at 12:00PM May 06, 2021Observed: 4.06 ft at 12:15PM May 06, 2021Observed: 4.06 ft at 12:30PM May 06, 2021Observed: 4.06 ft at 12:45PM May 06, 2021Observed: 4.06 ft at 12:46PM May 06, 2021Observed: 4.06 ft at 1:00PM May 06, 2021Observed: 4.05 ft at 1:15PM May 06, 2021Observed: 4.05 ft at 1:30PM May 06, 2021Observed: 4.05 ft at 1:45PM May 06, 2021Observed: 4.04 ft at 2:00PM May 06, 2021Observed: 4.04 ft at 2:15PM May 06, 2021Observed: 4.04 ft at 2:30PM May 06, 2021Observed: 4.04 ft at 2:45PM May 06, 2021Observed: 4.04 ft at 3:00PM May 06, 2021Observed: 4.04 ft at 3:15PM May 06, 2021Observed: 4.03 ft at 3:30PM May 06, 2021Observed: 4.03 ft at 3:45PM May 06, 2021Observed: 4.03 ft at 4:00PM May 06, 2021Observed: 4.03 ft at 4:15PM May 06, 2021Observed: 4.03 ft at 4:30PM May 06, 2021Observed: 4.03 ft at 4:45PM May 06, 2021Observed: 4.03 ft at 5:00PM May 06, 2021Observed: 4.03 ft at 5:15PM May 06, 2021Observed: 4.02 ft at 5:30PM May 06, 2021Observed: 4.02 ft at 5:45PM May 06, 2021Observed: 4.02 ft at 6:00PM May 06, 2021Observed: 4.02 ft at 6:15PM May 06, 2021Observed: 4.02 ft at 6:30PM May 06, 2021Observed: 4.02 ft at 6:45PM May 06, 2021Observed: 4.02 ft at 7:00PM May 06, 2021Observed: 4.02 ft at 7:15PM May 06, 2021Observed: 4.01 ft at 7:30PM May 06, 2021Observed: 4.02 ft at 7:45PM May 06, 2021Observed: 4.01 ft at 8:00PM May 06, 2021Observed: 4.01 ft at 8:15PM May 06, 2021Observed: 4.01 ft at 8:30PM May 06, 2021Observed: 4.01 ft at 8:45PM May 06, 2021Observed: 4.01 ft at 9:00PM May 06, 2021Observed: 4 ft at 9:15PM May 06, 2021Observed: 4 ft at 9:30PM May 06, 2021Observed: 4 ft at 9:45PM May 06, 2021Observed: 4 ft at 10:00PM May 06, 2021Observed: 3.99 ft at 10:15PM May 06, 2021Observed: 3.99 ft at 10:30PM May 06, 2021Observed: 3.99 ft at 10:45PM May 06, 2021Observed: 3.99 ft at 11:00PM May 06, 2021Observed: 3.99 ft at 11:15PM May 06, 2021Observed: 3.99 ft at 11:30PM May 06, 2021Observed: 3.99 ft at 11:45PM May 06, 2021Observed: 3.99 ft at 12:00AM May 07, 2021Observed: 3.99 ft at 12:15AM May 07, 2021Observed: 3.99 ft at 12:30AM May 07, 2021Observed: 3.98 ft at 12:45AM May 07, 2021Observed: 3.98 ft at 12:46AM May 07, 2021Observed: 3.98 ft at 1:00AM May 07, 2021Observed: 3.98 ft at 1:15AM May 07, 2021Observed: 3.97 ft at 1:30AM May 07, 2021Observed: 3.97 ft at 1:45AM May 07, 2021Observed: 3.97 ft at 2:00AM May 07, 2021Observed: 3.97 ft at 2:15AM May 07, 2021Observed: 3.96 ft at 2:30AM May 07, 2021Observed: 3.96 ft at 2:45AM May 07, 2021Observed: 3.96 ft at 3:00AM May 07, 2021Observed: 3.96 ft at 3:15AM May 07, 2021Observed: 3.96 ft at 3:30AM May 07, 2021Observed: 3.95 ft at 3:45AM May 07, 2021Observed: 3.95 ft at 4:00AM May 07, 2021Observed: 3.95 ft at 4:15AM May 07, 2021Observed: 3.95 ft at 4:30AM May 07, 2021Observed: 3.95 ft at 4:45AM May 07, 2021Observed: 3.95 ft at 5:00AM May 07, 2021Observed: 3.95 ft at 5:15AM May 07, 2021Observed: 3.95 ft at 5:30AM May 07, 2021Observed: 3.95 ft at 5:45AM May 07, 2021Observed: 3.94 ft at 6:00AM May 07, 2021Observed: 3.94 ft at 6:15AM May 07, 2021Observed: 3.94 ft at 6:30AM May 07, 2021Observed: 3.94 ft at 6:45AM May 07, 2021Observed: 3.94 ft at 7:00AM May 07, 2021Observed: 3.94 ft at 7:15AM May 07, 2021Observed: 3.94 ft at 7:30AM May 07, 2021Observed: 3.94 ft at 7:45AM May 07, 2021Observed: 3.94 ft at 8:00AM May 07, 2021Observed: 3.94 ft at 8:15AM May 07, 2021Observed: 3.94 ft at 8:30AM May 07, 2021Observed: 3.94 ft at 8:45AM May 07, 2021Observed: 3.94 ft at 9:00AM May 07, 2021Observed: 3.94 ft at 9:15AM May 07, 2021Observed: 3.94 ft at 9:30AM May 07, 2021Observed: 3.94 ft at 9:45AM May 07, 2021Observed: 3.94 ft at 10:00AM May 07, 2021Observed: 3.94 ft at 10:15AM May 07, 2021Observed: 3.94 ft at 10:30AM May 07, 2021Observed: 3.93 ft at 10:45AM May 07, 2021Observed: 3.93 ft at 11:00AM May 07, 2021Observed: 3.93 ft at 11:15AM May 07, 2021Observed: 3.93 ft at 11:30AM May 07, 2021Observed: 3.93 ft at 11:45AM May 07, 2021Observed: 3.93 ft at 12:00PM May 07, 2021Observed: 3.93 ft at 12:15PM May 07, 2021Observed: 3.93 ft at 12:30PM May 07, 2021Observed: 3.92 ft at 12:45PM May 07, 2021Observed: 3.93 ft at 1:00PM May 07, 2021Observed: 3.92 ft at 1:15PM May 07, 2021Observed: 3.93 ft at 1:30PM May 07, 2021Observed: 3.93 ft at 1:45PM May 07, 2021Observed: 3.93 ft at 2:00PM May 07, 2021Observed: 3.93 ft at 2:15PM May 07, 2021Observed: 3.93 ft at 2:30PM May 07, 2021Observed: 3.94 ft at 2:45PM May 07, 2021Observed: 3.94 ft at 3:00PM May 07, 2021Observed: 3.94 ft at 3:15PM May 07, 2021Observed: 3.94 ft at 3:30PM May 07, 2021Observed: 3.95 ft at 3:45PM May 07, 2021Observed: 3.94 ft at 4:00PM May 07, 2021Observed: 3.95 ft at 4:15PM May 07, 2021Observed: 3.95 ft at 4:30PM May 07, 2021Observed: 3.95 ft at 4:45PM May 07, 2021Observed: 3.95 ft at 5:00PM May 07, 2021Observed: 3.95 ft at 5:15PM May 07, 2021Observed: 3.95 ft at 5:30PM May 07, 2021Observed: 3.95 ft at 5:45PM May 07, 2021Observed: 3.95 ft at 6:00PM May 07, 2021Observed: 3.95 ft at 6:15PM May 07, 2021Observed: 3.95 ft at 6:30PM May 07, 2021Observed: 3.95 ft at 6:45PM May 07, 2021Observed: 3.95 ft at 7:00PM May 07, 2021Observed: 3.95 ft at 7:15PM May 07, 2021Observed: 3.95 ft at 7:30PM May 07, 2021Observed: 3.95 ft at 7:45PM May 07, 2021Observed: 3.95 ft at 8:00PM May 07, 2021Observed: 3.96 ft at 8:15PM May 07, 2021Observed: 3.95 ft at 8:30PM May 07, 2021Observed: 3.96 ft at 8:45PM May 07, 2021Observed: 3.96 ft at 9:00PM May 07, 2021Observed: 3.96 ft at 9:15PM May 07, 2021Observed: 3.97 ft at 9:30PM May 07, 2021Observed: 3.98 ft at 9:45PM May 07, 2021Observed: 3.98 ft at 10:00PM May 07, 2021Observed: 3.99 ft at 10:15PM May 07, 2021Observed: 4 ft at 10:30PM May 07, 2021Observed: 4.02 ft at 10:45PM May 07, 2021Observed: 4.03 ft at 11:00PM May 07, 2021Observed: 4.04 ft at 11:15PM May 07, 2021Observed: 4.06 ft at 11:30PM May 07, 2021Observed: 4.07 ft at 11:45PM May 07, 2021Observed: 4.08 ft at 12:00AM May 08, 2021Observed: 4.09 ft at 12:15AM May 08, 2021Observed: 4.1 ft at 12:30AM May 08, 2021Observed: 4.1 ft at 12:45AM May 08, 2021Observed: 4.11 ft at 1:00AM May 08, 2021Observed: 4.11 ft at 1:15AM May 08, 2021Observed: 4.11 ft at 1:30AM May 08, 2021Observed: 4.1 ft at 1:45AM May 08, 2021Observed: 4.1 ft at 2:00AM May 08, 2021Observed: 4.1 ft at 2:15AM May 08, 2021Observed: 4.09 ft at 2:30AM May 08, 2021Observed: 4.09 ft at 2:45AM May 08, 2021Observed: 4.08 ft at 3:00AM May 08, 2021Observed: 4.08 ft at 3:15AM May 08, 2021Observed: 4.07 ft at 3:30AM May 08, 2021Observed: 4.07 ft at 3:45AM May 08, 2021Observed: 4.06 ft at 4:00AM May 08, 2021Observed: 4.06 ft at 4:15AM May 08, 2021Observed: 4.06 ft at 4:30AM May 08, 2021Observed: 4.05 ft at 4:45AM May 08, 2021Observed: 4.04 ft at 5:00AM May 08, 2021Observed: 4.05 ft at 5:15AM May 08, 2021Observed: 4.04 ft at 5:30AM May 08, 2021Observed: 4.04 ft at 5:45AM May 08, 2021Observed: 4.03 ft at 6:00AM May 08, 2021Observed: 4.03 ft at 6:15AM May 08, 2021Observed: 4.02 ft at 6:30AM May 08, 2021Observed: 4.02 ft at 6:45AM May 08, 2021Observed: 4.01 ft at 7:00AM May 08, 2021Observed: 4.01 ft at 7:15AM May 08, 2021Observed: 4.01 ft at 7:30AM May 08, 2021Observed: 4 ft at 7:45AM May 08, 2021Observed: 4 ft at 8:00AM May 08, 2021Observed: 4 ft at 8:15AM May 08, 2021Observed: 4 ft at 8:30AM May 08, 2021Observed: 3.99 ft at 8:45AM May 08, 2021Observed: 3.99 ft at 9:00AM May 08, 2021Observed: 3.99 ft at 9:15AM May 08, 2021Observed: 3.99 ft at 9:30AM May 08, 2021Observed: 3.98 ft at 9:45AM May 08, 2021Observed: 3.98 ft at 10:00AM May 08, 2021Observed: 3.98 ft at 10:15AM May 08, 2021Observed: 3.98 ft at 10:30AM May 08, 2021Observed: 3.98 ft at 10:45AM May 08, 2021Observed: 3.97 ft at 11:00AM May 08, 2021Observed: 3.97 ft at 11:15AM May 08, 2021Observed: 3.97 ft at 11:30AM May 08, 2021Observed: 3.97 ft at 11:45AM May 08, 2021Observed: 3.97 ft at 12:00PM May 08, 2021Observed: 3.97 ft at 12:15PM May 08, 2021Observed: 3.97 ft at 12:30PM May 08, 2021Observed: 3.96 ft at 12:45PM May 08, 2021Observed: 3.96 ft at 1:00PM May 08, 2021Observed: 3.96 ft at 1:15PM May 08, 2021Observed: 3.96 ft at 1:30PM May 08, 2021Observed: 3.96 ft at 1:45PM May 08, 2021Observed: 3.96 ft at 2:00PM May 08, 2021Observed: 3.96 ft at 2:15PM May 08, 2021Observed: 3.96 ft at 2:30PM May 08, 2021Observed: 3.96 ft at 2:45PM May 08, 2021Observed: 3.96 ft at 3:00PM May 08, 2021Observed: 3.96 ft at 3:15PM May 08, 2021Observed: 3.96 ft at 3:30PM May 08, 2021Observed: 3.96 ft at 3:45PM May 08, 2021Observed: 3.97 ft at 4:00PM May 08, 2021Observed: 3.97 ft at 4:15PM May 08, 2021Observed: 3.97 ft at 4:30PM May 08, 2021Observed: 3.98 ft at 4:45PM May 08, 2021Observed: 3.98 ft at 5:00PM May 08, 2021Observed: 3.98 ft at 5:15PM May 08, 2021Observed: 3.99 ft at 5:30PM May 08, 2021Observed: 3.99 ft at 5:45PM May 08, 2021Observed: 4 ft at 6:00PM May 08, 2021Observed: 4 ft at 6:15PM May 08, 2021Observed: 4 ft at 6:30PM May 08, 2021Observed: 4.01 ft at 6:45PM May 08, 2021Observed: 4.01 ft at 7:00PM May 08, 2021Observed: 4.01 ft at 7:15PM May 08, 2021Observed: 4.01 ft at 7:30PM May 08, 2021Observed: 4.01 ft at 7:45PM May 08, 2021Observed: 4.01 ft at 8:00PM May 08, 2021Observed: 4.01 ft at 8:15PM May 08, 2021Observed: 4.01 ft at 8:30PM May 08, 2021Observed: 4.01 ft at 8:45PM May 08, 2021Observed: 4.01 ft at 9:00PM May 08, 2021Observed: 4 ft at 9:15PM May 08, 2021Observed: 4 ft at 9:30PM May 08, 2021Observed: 4 ft at 9:45PM May 08, 2021Observed: 3.99 ft at 10:00PM May 08, 2021Observed: 4 ft at 10:15PM May 08, 2021Observed: 3.99 ft at 10:30PM May 08, 2021Observed: 3.99 ft at 10:45PM May 08, 2021Observed: 3.99 ft at 11:00PM May 08, 2021Observed: 3.99 ft at 11:15PM May 08, 2021Observed: 3.98 ft at 11:30PM May 08, 2021Observed: 3.98 ft at 11:45PM May 08, 2021Observed: 3.98 ft at 12:00AM May 09, 2021Observed: 3.98 ft at 12:15AM May 09, 2021Observed: 3.97 ft at 12:30AM May 09, 2021Observed: 3.97 ft at 12:45AM May 09, 2021Observed: 3.97 ft at 12:46AM May 09, 2021Observed: 3.97 ft at 1:00AM May 09, 2021Observed: 3.96 ft at 1:15AM May 09, 2021Observed: 3.96 ft at 1:30AM May 09, 2021Observed: 3.96 ft at 1:45AM May 09, 2021Observed: 3.95 ft at 2:00AM May 09, 2021Observed: 3.95 ft at 2:15AM May 09, 2021Observed: 3.95 ft at 2:30AM May 09, 2021Observed: 3.94 ft at 2:45AM May 09, 2021Observed: 3.94 ft at 3:00AM May 09, 2021Observed: 3.94 ft at 3:15AM May 09, 2021Observed: 3.93 ft at 3:30AM May 09, 2021Observed: 3.93 ft at 3:45AM May 09, 2021Observed: 3.93 ft at 4:00AM May 09, 2021Observed: 3.93 ft at 4:15AM May 09, 2021Observed: 3.92 ft at 4:30AM May 09, 2021Observed: 3.92 ft at 4:45AM May 09, 2021Observed: 3.92 ft at 5:00AM May 09, 2021Observed: 3.91 ft at 5:15AM May 09, 2021Observed: 3.91 ft at 5:30AM May 09, 2021Observed: 3.91 ft at 5:45AM May 09, 2021Observed: 3.9 ft at 6:00AM May 09, 2021Observed: 3.9 ft at 6:15AM May 09, 2021Observed: 3.9 ft at 6:30AM May 09, 2021Forecast: 4 ft 8:00AM May 09, 2021Forecast: 4.1 ft 2:00PM May 09, 2021Forecast: 5.2 ft 8:00PM May 09, 2021Forecast: 6.4 ft 2:00AM May 10, 2021Highest Forecast: 6.9 ft 8:00AM May 10, 2021Forecast: 6.6 ft 2:00PM May 10, 2021Forecast: 6 ft 8:00PM May 10, 2021Forecast: 5.7 ft 2:00AM May 11, 2021Forecast: 5.4 ft 8:00AM May 11, 2021USGS--Water Resources of the United StatesWIBP1(plotting HGIRG) Graph Created (7:17AM May 9, 2021)ObservedForecast (issued 10:36AM May 8)Latest observed value: 3.9 ft at 6:30 AM EDT 9-May-2021. Flood Stage is 12 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 Frankstown Branch Juniata River at Williamsburg are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 15
Moderate Flood Stage: 13
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): 0

Historic Crests
(1) 19.46 ft on 09/18/2004
(2) 19.15 ft on 01/19/1996
(3) 19.10 ft on 06/01/1889
(4) 18.58 ft on 03/18/1936
(5) 18.39 ft on 06/23/1972
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.98 ft on 09/10/2018
(2) 12.58 ft on 08/04/2018
(3) 12.63 ft on 02/17/2018
(4) 12.16 ft on 09/10/2011
(5) 14.03 ft on 09/07/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.97 ft on 07/24/1934
(2) 1.01 ft on 08/12/1963
(3) 1.07 ft on 09/08/1969
(4) 1.10 ft on 09/10/1964
(5) 1.15 ft on 09/01/1966
Show More Low Water Records

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

Zoom Level:16
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
26 FEMA 0.2% Annual Chance Flood Level (500-year flood).
22 FEMA 1% Annual Chance Flood Level (100-year flood).
21 FEMA 2% Annual Chance Flood Level (50-year flood). Flood waters begin to reach the Weller Road Bridge near Canoe Creek State Park.
19.5 Flood of record from the remnants of Hurricane Ivan in September 2004.
18 Most of Williamsburg is affected by high water. Very few houses on the right bank are above this level.
17.5 FEMA 10% Annual Chance Flood Level (10-year flood).
17 Many homes on the right, or south bank are affected by high water. The south approach to the highway bridge is unundated. A number of other streets and roads in the area are closed.
15 Many homes on the right, or south bank will be affected by high water.
13 Sections of route 866 from Williamsburg to Ganister are covered by flood waters.
12 The right, or south bank overflows. The Road near the river upstream of Williamsburg is inundated. A few homes experience basement flooding.
Photos
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream
About This Location Collapse

Latitude: 40.463056° N, Longitude: 78.200000° 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 29 831.78 843.78 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: 2-Nov-2020 7:30 PM
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