The geodetic vertical elevation (gage datum) for this gage was updated prior to 5/26/2026. See https://www.usgs.gov/centers/pennsylvania-water-science-center/updating-pennsylvania-streamgage-datums for more information.

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Available data

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Continuous data

3 data types available - data from 2016-02-25 to 2026-08-15

Daily data

1 data types available - data from 2016-04-01 to 2026-08-13

Field measurements

2 data types available - data from 1938-04-22 to 2026-08-12

Discrete sample data

87 Observed properties (data types) available - with data from 2008-06-12 to 2016-10-11

12 Sampling activities

Peak measurements

2 data types available - with data from 1989-07-21 to 2025-05-15

Statistical tables for select daily data types

1 data types available - data from 2016-04-01 to 2026-08-13

Important information about this monitoring location

Flow regulated since Oct 1972 by Raystown Dan (01563100).

Location details and information

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Operated in cooperation with:

Pennsylvania Department of Environmental Protection, Bureau of Safe Drinking Water

USGS - Federal Priority Streamgages

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01564895	n/a
Location name	Juniata River at Lewistown, PA	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	40.594444	n/a
Decimal longitude (WGS84)	-77.582778	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Pennsylvania	42
State	Pennsylvania	42
County	Mifflin County	087
Country	United States of America	n/a
Altitude of gage/land surface	443.17 feet	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.01 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Lower Juniata	02050304
Drainage basin		n/a
Date of first construction		n/a
Drainage area	2519 square miles	n/a
Contributing drainage area		n/a
Time zone abbreviation	EST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Juniata River at Lewistown, PA - USGS-01564895