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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
Biological Water-quality 1974-06-27 1979-10-25
Information Water-quality 1967-11-16 1994-08-09
Inorganics, Major, Metals Water-quality 1945-10-01 1994-08-09
Inorganics, Major, Non-metals Water-quality 1945-10-01 1994-08-09
Inorganics, Minor, Non-metals Water-quality 1968-01-25 1994-08-09
Inorganics, Minor, metals Water-quality 1945-10-01 1994-08-09
Microbiological Water-quality 1972-10-12 1994-08-09
Nutrient Water-quality 1945-10-01 1994-08-09
Organics, PCBs Water-quality 1973-05-08 1979-10-25
Organics, other Water-quality 1967-10-09 1981-08-19
Organics, pesticide Water-quality 1967-11-16 1979-10-25
Physical Daily Values, Unit Values, Water-quality 1929-10-01 2024-11-23
Population/Community Water-quality 1974-07-11 1979-10-25
Radiochemistry Water-quality 1981-02-19 1981-06-17
Sediment Water-quality 1976-01-20 1994-08-09
n/a Peak Measurements 1905-05-08 2024-01-24
n/a Site Visits 1929-06-25 2024-10-29
n/a USGS Annual Water Data Reports Site 2006-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 07072500 is associated with a Stream in Lawrence County, Arkansas. Current conditions of Discharge and Gage height are available. Water data back to 1905 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
07072500 n/a
Site name
Black River at Black Rock, AR n/a
Site type
Stream
ST
DMS latitude 360609 n/a
DMS longitude 0910552 n/a
Decimal latitude 36.1025 n/a
Decimal longitude -91.0977778 n/a
Latitude-longitude method
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) G
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
Arkansas 05
State
Arkansas 05
County
Lawrence County 075
Country US n/a
Land net location description NWNW S21 T17N R1W n/a
Name of location map n/a
Scale of location map n/a
Altitude of Gage/land surface 229.48 feet n/a
Method altitude determined GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Altitude accuracy .16 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
11010009
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
7370 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation CST 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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logo for US Army Corps of Engineers - Little Rock District
US Army Corps of Engineers - Little Rock District