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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 1982-05-20 2011-09-28
Physical Daily Values, Unit Values, Water-quality 1953-05-01 2024-11-22
Sediment Daily Values, Water-quality 2006-09-30 2011-09-29
n/a Peak Measurements 1953-10-15 2023-08-31
n/a Site Visits 1982-07-20 2024-04-29
n/a USGS Annual Water Data Reports Site 2006-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 16809600 is associated with a Stream in Guam, Guam. Current conditions of Discharge and Gage height are available. Water data back to 1953 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
16809600 n/a
Site name
La Sa Fua River near Umatac, Guam n/a
Site type
Stream
ST
DMS latitude 131825.0 n/a
DMS longitude -1443951.9 n/a
Decimal latitude 13.30694444 n/a
Decimal longitude 144.6644167 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
Hawaii 15
State
Guam 66
County
Guam 010
Country US n/a
Land net location description n/a
Name of location map Agat, GU n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 120 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 20 feet n/a
Altitude datum
Local Mean Sea Level LMSL
Subbasin hydrologic unit
22010000
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
1.03 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation GST n/a
Site honors Daylight Saving Time
N 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

Operated in cooperation with:

logo for University of Guam - Water and Environmental Research Institute
University of Guam - Water and Environmental Research Institute
logo for USGS - Cooperative Matching Funds
USGS - Cooperative Matching Funds