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Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

Available data

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0 data types available

1 data types available - data from 1993-09-01 to 1996-04-29

1 data types available - data from 1993-08-30 to 2015-10-06

0 observed properties (data types) available

2 data types available - with data from 1994-03-03 to 2025-08-21

1 data types available - data from 1993-09-01 to 1996-04-29

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Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01411370	n/a
Location name	Grassy Sound Chl at Nummy Is nr North Wildwood NJ	n/a
Site type	Estuary	ES
Decimal latitude (WGS84)	39.0286111111111	n/a
Decimal longitude (WGS84)	-74.8011111111111	n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	New Jersey	34
State	New Jersey	34
County	Cape May County	009
Country	United States of America	n/a
Altitude of gage/land surface	0	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	Great Egg Harbor	02040302
Drainage basin		n/a
Date of first construction		n/a
Drainage area		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