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Continuous data

4 data types available - data from 2011-10-26 to 2026-08-06

Daily data

4 data types available - data from 2011-10-26 to 2026-08-05

Field measurements

0 data types available

Discrete sample data

0 observed properties (data types) available

Statistical tables for select daily data types

3 data types available - data from 2011-10-26 to 2026-08-05

Important information about this monitoring location

LOCATION.--On downstream side of bridge on Silver Run Road (Rt. 9) near Odessa, about 3 mi upstream from the confluence with the Delaware River.

PERIOD OF RECORD.-- TEMPERATURE: October 2011 to current year. SPECIFIC CONDUCTANCE: October 2011 to current year. pH: October 2011 to current year. DISSOLVED OXYGEN: October 2011 to current year.

INSTRUMENTATION.-- Multi-parameter water-quality monitor, October 26, 2011 to current year.

REMARKS.-- Missing record due to periodic instrument malfunction, blow-out tides caused by heavy NW / WNW wind, and probes affected by ice.

Location details and information

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Operated in cooperation with:

Delaware Geological Survey

USGS - Cooperative Matching Funds

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01483177	n/a
Location name	APPOQUINIMINK RIVER NEAR ODESSA, DE	n/a
Site type	Estuary	ES
Decimal latitude (WGS84)	39.4659444444444	n/a
Decimal longitude (WGS84)	-75.6135277777778	n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
District	Maryland	24
State	Delaware	10
County	New Castle County	003
Country	United States of America	n/a
Altitude of gage/land surface	0	n/a
Method altitude determined	Interpolated from Digital Elevation Model	N
Altitude accuracy	5 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Brandywine-Christina	02040205
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 Appoquinimink River Near Odessa, DE - USGS-01483177