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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.

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Available data

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Continuous data

1 data types available - data from 2015-05-13 to 2026-09-09

Daily data

1 data types available - data from 2015-05-13 to 2026-09-09

Field measurements

1 data types available - data from 2015-06-22 to 2026-09-01

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.-- Located at northeast shore, near fish ladder and spillway, at upstream side of bridge on State Route 13, 1.5 mi northeast of Cheswold.

PERIOD OF RECORD.-- May 2015 to current year.

GAGE.-- Water-stage recorder and crest-stage gage. Datum of gage is 0.00 ft above North American Vertical Datum of 1988.

REMARKS.--Elevation of lake can be controlled by lift boards.

Location details and information

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Operated in cooperation with:

Delaware Geological Survey

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01483510	n/a
Location name	GARRISONS LAKE NEAR CHESWOLD, DE	n/a
Site type	Lake, Reservoir, Impoundment	LK
Decimal latitude (WGS84)	39.244305555555556	n/a
Decimal longitude (WGS84)	-75.58838888888889	n/a
Latitude-longitude method	Interpolated from Digital MAP.	N
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Maryland	24
State	Delaware	10
County	Kent County	001
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	GNSS4 - Level 4 Quality Survey Grade Global Navigation Satellite System	Z
Altitude accuracy	0.1 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Broadkill-Smyrna	02040207
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

Monitoring location Garrisons Lake Near Cheswold, DE - USGS-01483510