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Available data

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Continuous data

3 data types available - data from 1988-05-17 to 2026-08-03

Daily data

1 data types available - data from 1978-06-07 to 2026-08-01

Field measurements

2 data types available - data from 1975-08-04 to 2026-07-16

Discrete sample data

38 Observed properties (data types) available - with data from 1979-11-20 to 1995-08-16

54 Sampling activities

Statistical tables for select daily data types

1 data types available - data from 1978-06-07 to 2026-08-01

Important information about this monitoring location

LOCATION.-- on right bank at downstream side of bridge on State Highway 650, 1.0 mi upstream from mouth, and 1.7 mi north of Sandy Spring. PERIOD OF RECORD.-- June 1978 to current year. GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 302.73 ft above North American Vertical Datum of 1988.

Location details and information

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Operated in cooperation with:

Maryland Department of Natural Resources, Maryland Geological Survey

USGS - Cooperative Matching Funds

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01591700	n/a
Location name	HAWLINGS RIVER NEAR SANDY SPRING, MD	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	39.174527777777776	n/a
Decimal longitude (WGS84)	-77.02141666666667	n/a
Latitude-longitude method	Interpolated from Digital MAP.	N
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Maryland	24
State	Maryland	24
County	Montgomery County	031
Country	United States of America	n/a
Altitude of gage/land surface	302.73 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.16 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Patuxent	02060006
Drainage basin		n/a
Date of first construction		n/a
Drainage area	27 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 Hawlings River Near Sandy Spring, MD - USGS-01591700