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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
Information Water-quality 1991-10-23 2021-09-13
Inorganics, Major, Metals Water-quality 1991-10-23 2021-06-10
Inorganics, Major, Non-metals Water-quality 1991-10-23 2021-09-13
Inorganics, Minor, Non-metals Water-quality 1993-06-24 2021-06-10
Inorganics, Minor, metals Water-quality 1991-10-23 2021-06-10
Microbiological Water-quality 1991-10-23 2021-09-13
Nutrient Water-quality 1991-10-23 2021-08-16
Organics, other Water-quality 1991-10-23 2021-08-16
Organics, pesticide Water-quality 1995-08-02 1995-08-02
Physical Daily Values, Unit Values, Water-quality 1991-10-23 2021-09-25
Radiochemistry Water-quality 1993-06-24 2021-06-10
Sediment Daily Values, Water-quality 1994-03-25 1996-04-01
n/a Peak Measurements 1994-04-15 2019-12-15
n/a Site Visits 1992-03-30 2021-08-12
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
S
Latitude-longitude datum
NAD27
Decimal Latitude-longitude datum NAD83
District
09
State
25
County
003
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 n/a
Altitude accuracy n/a
Altitude datum
n/a
Subbasin hydrologic unit
01100005
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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