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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 2017-10-05 2017-10-05
Physical Daily Values, Unit Values, Water-quality 2000-07-19 2024-11-18
n/a Peak Measurements 2000-09-20 2024-04-03
n/a Site Visits 1982-11-24 2024-10-09
n/a USGS Annual Water Data Reports Site 2006-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 01581920 is associated with a Stream in Baltimore County, Maryland. Current conditions of Discharge, Gage height, and Temperature are available. Water data back to 1982 are available online.

The water temperature recorded by the sensor at this site may not be representative of the temperature of the water being released by Prettyboy Dam, particularly during storm events. Overland runoff and tributary inflows between the gaging station and the dam can affect the temperature of the stream at the monitoring location.
Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01581920 n/a
Site name
GUNPOWDER FALLS NEAR PARKTON, MD n/a
Site type
Stream
ST
DMS latitude 393708.6 n/a
DMS longitude 0764125.3 n/a
Decimal latitude 39.61905556 n/a
Decimal longitude -76.6903611 n/a
Latitude-longitude method
Interpolated from Digital MAP. N
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
Baltimore County 005
Country US n/a
Land net location description n/a
Name of location map HEREFORD, MD n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 355.43 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
Gunpowder-Patapsco 02060003
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site YNNNYNNNNYNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
81.5 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

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