Rivers in Pennsylvania
Frankstown Branch Juniata River at Williamsburg
Below flood stage
4.76ftStage
Observed Wed, Sep 23, 8:30 AM EDT
- Flood stage
- 12.00 ft
- Forecast crest
- 4.30 ftWed, Sep 23, 2:00 PM EDT
- Record crest
- 19.46 ft2004
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 15.00 ft |
| Moderate flood | 13.00 ft |
| Minor flood | 12.00 ft |
| Action | 9.00 ft |
- 26.00 ftFEMA 0.2% Annual Chance Flood Level (500-year flood).
- 22.00 ftFEMA 1% Annual Chance Flood Level (100-year flood).
- 21.00 ftFEMA 2% Annual Chance Flood Level (50-year flood). Flood waters begin to reach the Weller Road Bridge near Canoe Creek State Park.
- 19.50 ftFlood of record from the remnants of Hurricane Ivan in September 2004.
- 18.00 ftMost of Williamsburg is affected by high water. Very few houses on the right bank are above this level.
- 17.50 ftFEMA 10% Annual Chance Flood Level (10-year flood).
- 17.00 ftMany 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.
- 15.00 ftMany homes on the right, or south bank will be affected by high water.
- 13.00 ftSections of route 866 from Williamsburg to Ganister are covered by flood waters.
- 12.00 ftThe right, or south bank overflows. The Road near the river upstream of Williamsburg is inundated. A few homes experience basement flooding.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 13% |
| Moderate flooding | 10% |
| Major flooding | 6% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
45 crests on NOAA’s list since 1889.
| # | Date | Stage |
|---|---|---|
| 1 | September 18, 2004 | 19.46 ft |
| 2 | January 19, 1996 | 19.15 ft |
| 3 | June 1, 1889 | 19.10 ft |
| 4 | March 18, 1936 | 18.58 ft |
| 5 | June 23, 1972 | 18.39 ft |
| 6 | November 8, 1997 | 18.20 ft |
| 7 | September 10, 2018 | 16.98 ft |
| 8 | September 9, 2004 | 16.91 ft |
| 9 | September 2, 2021 | 16.55 ft |
| 10 | November 28, 1993 | 16.08 ft |
| 11 | April 3, 2024 | 15.47 ft |
| 12 | February 15, 1984 | 15.38 ft |
| 13 | December 2, 2010 | 15.27 ft |
| 14 | November 13, 1970 | 14.50 ft |
| 15 | February 26, 1961 | 14.12 ft |
| 16 | April 16, 1993 | 14.08 ft |
| 17 | September 7, 2011 | 14.03 ft |
| 18 | March 1, 1954 | 13.98 ft |
| 19 | March 18, 1937 | 13.90 ft |
| 20 | October 23, 1929 | 13.90 ft |
| 21 | March 11, 2011 | 13.77 ft |
| 22 | April 5, 1987 | 13.76 ft |
| 23 | March 25, 1994 | 13.59 ft |
| 24 | March 14, 2010 | 13.56 ft |
| 25 | April 2, 1970 | 13.54 ft |
Most recent crests
- April 3, 2024: 15.47 ft
- May 8, 2022: 13.21 ft
- September 2, 2021: 16.55 ft
- September 10, 2018: 16.98 ft
- August 4, 2018: 12.58 ft
- February 17, 2018: 12.63 ft
- September 10, 2011: 12.16 ft
- September 7, 2011: 14.03 ft
- March 11, 2011: 13.77 ft
- December 2, 2010: 15.27 ft
Nearby
Upstream, downstream and the gauges around this one.
- Juniata River at Huntingdon
- Central PA Dams Raystown Dam on Raystown Branch of Juniata River at Raystown Dam on Raystown Branch of Juniata River
- Little Juniata River at Spruce Creek
- Raystown Branch Juniata River at Huntingdon at Raystown Lake - Below Dam
- Juniata River at Mapleton Depot
- Bald Eagle Creek (South) at Tyrone
- Raystown Branch Juniata River at Saxton
- Aughwick Creek at Shirleysburg
What this means
Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.