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  • Beta release
  • Explore the New  USGS National Water Dashboard  interactive map to access real-time data from over 13,500 stations nationwide.
  • Notice of planned maintenance to underlying USGS network September 24-26, 2021: During this maintenance period users may experience intermittent periods of inaccessibility or delayed delivery of hydrologic data to the USGS National Water Information System (NWIS). Please email gs-w_support_nwisweb@usgs.gov with any concerns regarding impacts to data delivery.

Important Data may be provisional - learn more

USGS Parameter Group Data Types Start Date End Date
Biological Water-quality 1980-11-13 2017-07-10
Information Unit Values, Water-quality 1965-01-23 2021-08-04
Inorganics, Major, Metals Water-quality 1959-10-01 2002-09-25
Inorganics, Major, Non-metals Unit Values, Water-quality 1959-10-01 2017-07-11
Inorganics, Minor, Non-metals Water-quality 1971-02-17 2002-09-25
Inorganics, Minor, metals Water-quality 1966-04-01 2002-09-25
Microbiological Water-quality 1980-10-28 1995-09-07
Nutrient Water-quality 1959-10-01 2017-07-10
Organics, PCBs Water-quality 1970-12-17 1981-11-17
Organics, other Water-quality 1967-10-01 2017-07-10
Organics, pesticide Water-quality 1968-02-16 1982-05-04
Physical Daily Values, Unit Values, Water-quality 1903-01-01 2021-09-26
Population/Community Water-quality 1980-11-13 1981-09-10
Radiochemistry Water-quality 1981-02-06 1981-07-08
Sediment Daily Values, Water-quality 1966-01-25 2021-04-14
n/a Peak Measurements 1884-05-01 2020-03-30
n/a Site Visits 1929-06-07 2021-08-04
n/a USGS Annual Water Data Reports Site 2005-01-01 2020-01-01
Classic Water Data for the Nation Inventory

Metadata Element Location Metadata Metadata Code
Agency
USGS
Site identification number
n/a
Site name
n/a
Site type
ST
DMS latitude n/a
DMS longitude n/a
Decimal latitude n/a
Decimal longitude n/a
Latitude-longitude method
M
Latitude-longitude accuracy
F
Latitude-longitude datum
NAD27
Decimal Latitude-longitude datum NAD83
District
48
State
48
County
157
Country n/a
Land net location description n/a
Name of location map n/a
Scale of location map n/a
Altitude of Gage/land surface n/a
Method altitude determined L
Altitude accuracy n/a
Altitude datum
NGVD29
Subbasin hydrologic unit
12070104
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation n/a
Site honors Daylight Savings Time
n/a
Data reliability
n/a
Data-other GW files 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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