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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 1996-05-17 1996-06-19
Information Water-quality 1996-05-17 2021-12-07
Inorganics, Major, Metals Water-quality 1996-05-17 1997-03-17
Inorganics, Major, Non-metals Water-quality 1996-05-17 2021-12-07
Nutrient Water-quality 1996-05-17 1997-03-17
Organics, other Water-quality 1996-05-17 1997-03-17
Organics, pesticide Water-quality 1997-03-17 1997-03-17
Physical Daily Values, Unit Values, Water-quality 1996-05-17 2024-11-17
n/a Peak Measurements 2017-06-21 2023-04-13
n/a USGS Annual Water Data Reports Site 2016-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 301200090072400 is associated with a Lake, Reservoir, Impoundment in St. Tammany Parish, Louisiana. Current conditions of Gage height are available. Water data back to 1996 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
301200090072400 n/a
Site name
L Pontchartrain at Crossover 4 near Mandeville, LA n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 301158.7 n/a
DMS longitude 0900721.9 n/a
Decimal latitude 30.19963889 n/a
Decimal longitude -90.12275 n/a
Latitude-longitude method
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) G
Latitude-longitude accuracy
Accurate to + or - .5 sec (PLGR/PPS GPS). 5
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Louisiana 22
State
Louisiana 22
County
St. Tammany Parish 103
Country US n/a
Land net location description n/a
Name of location map SPANISH FORT NE, LA n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 0.00 feet n/a
Method altitude determined GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Altitude accuracy .08 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
08090202
Drainage basin
n/a
Topographic setting
Lake or Swamp
L
Flags for instruments at site YNNNYNNNNNNNNYNNNNNNNNNNNNNNNN 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 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 462200308 n/a

Operated in cooperation with:

logo for St. Tammany Parish
St. Tammany Parish
logo for USGS - Cooperative Matching Funds
USGS - Cooperative Matching Funds