Important Legacy real-time page

Available data

Select data types to graph from categories based on the way the data were collected.

Learn about the data collection categories

Continuous data

2 data types available - data from 2024-12-20 to 2026-08-01

Daily data

1 data types available - data from 2024-12-20 to 2026-08-01

Field measurements

1 data types available - data from 2025-03-03 to 2026-07-20

Discrete sample data

0 observed properties (data types) available

Statistical tables for select daily data types

0 data types available

Important information about this monitoring location

LOCATION.--On walkbridge portion of the Winchester and Potomac Railroad Bridge, near right bank, 300 ft upstream of Shenandoah River and 0.1 miles west of Harpers Ferry, WV. PERIOD OF RECORD.-- December 20, 2024 to current year. GAGE.-- Water-stage recorder. Datum of gage is 242.56 ft above North American Vertical Datum of 1988. REMARKS.-- This is a stage-only station. Discharge is not determined at this location. U.S. Geological Survey satellite data-collection platform at station.

Location details and information

Zoom out to see link to My Favorites

Use Explore USGS Water Data to discover additional data near this location

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01620000	n/a
Location name	POTOMAC RIVER AT HARPERS FERRY, WV	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	39.323750000000004	n/a
Decimal longitude (WGS84)	-77.72819444444444	n/a
Latitude-longitude method	Interpolated from map	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Maryland	24
State	Maryland	24
County	Washington County	043
Country	United States of America	n/a
Altitude of gage/land surface	244.92 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.09 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Conococheague-Opequon	02070004
Drainage basin		n/a
Date of first construction		n/a
Drainage area	6290 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 Potomac River at Harpers Ferry, WV - USGS-01620000