Mattawoman Creek Near Pomonkey, MD - 01658000

Datum of gage above NAVD88 will be updated from 39.76 ft to 39.54 ft on July 29, 2025. The local gage datum will remain the same.

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March 30, 2025 - April 6, 2025

Gage height, feet

Important Data may be provisional

Latest value

2.46 ft

Provisional

Apr 06, 2025

13:50:00 PM EDT

Selected

2.46 ft

Provisional

Apr 06, 2025

01:50:00 PM EDT

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Median

No median data for this data type

Statistics are not available at this monitoring location for the data type: Gage height, ft

Gage height, feet -- continuous data
Time	Result	Approval
2025-04-06T13:50:00.000-04:00	2.46	Provisional
2025-04-06T13:45:00.000-04:00	2.46	Provisional
2025-04-06T13:40:00.000-04:00	2.46	Provisional
2025-04-06T13:35:00.000-04:00	2.46	Provisional
2025-04-06T13:30:00.000-04:00	2.46	Provisional
2025-04-06T13:25:00.000-04:00	2.46	Provisional
2025-04-06T13:20:00.000-04:00	2.47	Provisional
2025-04-06T13:15:00.000-04:00	2.46	Provisional
2025-04-06T13:10:00.000-04:00	2.46	Provisional
2025-04-06T13:05:00.000-04:00	2.46	Provisional
2025-04-06T13:00:00.000-04:00	2.46	Provisional
2025-04-06T12:55:00.000-04:00	2.46	Provisional
2025-04-06T12:50:00.000-04:00	2.47	Provisional
2025-04-06T12:45:00.000-04:00	2.46	Provisional
2025-04-06T12:40:00.000-04:00	2.46	Provisional
2025-04-06T12:35:00.000-04:00	2.46	Provisional

Available data

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Continuous data

7 data types available - data from 2001-01-24 to 2025-04-06

Continuous data are collected via automated sensors installed at a monitoring location.

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Data type

Data date range

Graphed

Gage height, feet

2007-10-01 - 2025-04-06

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Discharge, cubic feet per second

2001-01-24 - 2025-04-06

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Dissolved oxygen, water, unfiltered, milligrams per liter [Discontinued]

2007-10-31 - 2011-06-27

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pH, water, unfiltered, field, standard units [Discontinued]

2007-10-31 - 2011-06-27

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius [Discontinued]

2007-10-31 - 2011-06-27

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Temperature, water, degrees Celsius [Discontinued]

2007-10-31 - 2011-06-27

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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) [Discontinued]

2007-10-31 - 2011-06-27

Daily data

11 data types available - data from 1949-11-28 to 2025-04-05

Field measurements - Coming soon

0 data types available

Discrete sample data

113 Observed properties (data types) available - with data from 1961-01-01 to 2025-04-02

700 Sampling activities

USGS Topo Imagery

Hydro

Legend

Monitoring Location

Active Monitoring Locations

5 km

3 mi

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.

Interested in understanding how to access the upstream/downstream data? Learn about the Network-Linked Data Index (NLDI)

USGS Parameter Group	Data Types	Start Date	End Date
Information	Water-quality	1961-01-01	2024-03-04
Inorganics, Major, Metals	Water-quality	1961-04-13	1964-05-22
Inorganics, Major, Non-metals	Daily Values, Unit Values, Water-quality	1961-04-13	2024-03-04
Inorganics, Minor, metals	Water-quality	1961-04-13	1964-05-22
Microbiological	Water-quality	2008-05-29	2019-03-22
Nutrient	Water-quality	1961-04-13	2024-01-02
Physical	Daily Values, Unit Values, Water-quality	1949-11-28	2025-04-06
Sediment	Water-quality	1961-01-01	2023-10-02
_n/a	Peak Measurements	1950-09-11	2022-12-16
_n/a	Site Visits	1949-12-06	2025-02-07
_n/a	USGS Annual Water Data Reports Site	2006-01-01	2023-01-01

Water Data for the Nation inventory

Monitoring location 01658000 is associated with a Stream in Charles County, Maryland. Current conditions of Discharge and Gage height are available. Water data back to 1949 are available online.

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Site identification number	01658000	_n/a
Site name	MATTAWOMAN CREEK NEAR POMONKEY, MD	_n/a
Site type	Stream	ST
DMS latitude	383546.1	_n/a
DMS longitude	0770321.7	_n/a
Decimal latitude	38.59613889	_n/a
Decimal longitude	-77.05602778	_n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 1 sec.	S
Latitude-longitude datum	North American Datum of 1983	NAD83
Decimal Latitude-longitude datum	North American Datum of 1983	NAD83
District	Maryland	24
State	Maryland	24
County	Charles County	017
Country	US	_n/a
Land net location description		_n/a
Name of location map	PORT TOBACCO	_n/a
Scale of location map	24000	_n/a
Altitude of Gage/land surface	39.76 feet	_n/a
Method altitude determined	Differentially corrected Global Positioning System.	D
Altitude accuracy	.01 feet	_n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Lower Potomac	02070011
Drainage basin		_n/a
Topographic setting		_n/a
Flags for instruments at site	YNNNYNYNNYNNNYNNNNNNNNNNNNNNNN	_n/a
Date of first construction		_n/a
Date site established or inventoried		_n/a
Drainage area	54.8 square miles	_n/a
Contributing drainage area		_n/a
Time Zone abbreviation	EST	_n/a
Site honors Daylight Saving Time	Y	_n/a
Data reliability		_n/a
Data-other GW files	NNNNNNNN	_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
Project number		_n/a