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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the Juniata River at Lewistown are issued routinely year-round.
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Upstream Gauge - at Mapleton Depot Upstream Gauge Downstream Gauge Downstream Gauge - at Newport
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 27
Flood Stage: 23
Action Stage: 18
Low Stage (in feet): 0

Historic Crests
(1) 43.30 ft on 06/01/1889
(2) 43.00 ft on 03/18/1936
(3) 42.10 ft on 06/23/1972
(4) 32.00 ft on 11/26/1950
(5) 31.68 ft on 09/19/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 23.00 ft on 09/11/2018
(2) 31.68 ft on 09/19/2004
(3) 23.60 ft on 11/08/1997
(4) 31.63 ft on 01/20/1996
(5) 21.34 ft on 03/26/1994
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.30 ft on 09/04/1968
(2) 1.30 ft on 07/18/1969
(3) 1.50 ft on 10/04/1948
(4) 1.70 ft on 10/31/1951
(5) 2.10 ft on 11/17/1971
Show More Low Water Records
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Gauge LocationGauge Map Marker
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
43.3 Flood of record from June 1889. FEMA 0.2% Annual Chance Flood Level (500-year flood).
34.5 FEMA 1% Annual Chance Flood Level (100-year flood). Widespread inundation occurs on both banks of the river. A large portion of Lewistown is affected by flood waters.
32 The right, or south bank begins to overflow. Expect water up to 6 feet deep in houses on West Elizabeth Street. Expect water up to 2 feet deep in houses on South Main Street.
31 FEMA 2% Annual Chance Flood Level (50-year flood).
30 Widespread inundation occurs in and around Lewistown. Water reaches South Main Street.
28 Considerable flood damage occurs to homes and businesses in and around lewistown.
27 Several homes on West Elizabeth Street will flood. Route 22 is also affected.
25 Basement flooding occurs in the low lying areas adjacent to the river and Kishacoquillas creek. Athletic fields will be inundated.
24.5 FEMA 10% Annual Chance Flood Level (10-year flood).
23 Basements of a few homes in the lowest lying areas will flood. Backwater on Kishacoquillas Creek will affect the athletic fields.
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream

Other Real-time and/or Archive Data Sources:

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.

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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