USGS

Appendix G: Column Descriptor list for NWIS Flat-File Format -- Ecological Synoptic Study Nutrient Data

Para-  
meter |  Description   |  Units
Code

STAID - Station identification number
SNAME - Station name
DATES - Date sample was collected
TIMES - Time sample was collected
LATLG - Latitude and Longitude of collection site
STATE - State code (08=Colorado;31=Nebraska;56=Wyoming)
CNTYC - State code+County code:

EVENT - Hydrologic event (J=Storm;4=Snowmelt;9=Routine sample)
00028 AGENCY ANALYZING SAMPLE (CODE NUMBER) (80020=Denver Central Laboratory)
00608 NITROGEN AMMONIA DISSOLVED (MG/L AS N)
00613 NITROGEN, NITRITE, DISSOLVED (MG/L AS N)
00623 NITROGEN AMMONIA PLUS ORGANIC DISSOLVED (MG/L AS N)
00625 NITROGEN AMMONIA PLUS ORGANIC TOTAL (MG/L AS N)
00631 NITROGEN NITRITE PLUS NITRATE DISSOLVED (MG/L AS N)
00665 PHOSPHORUS TOTAL (MG/L AS P)
00666 PHOSPHORUS DISSOLVED (MG/L AS P)
00671 PHOSPHORUS ORTHOPHOSPHATE DISSOLVED (MG/L AS P)
72000 ELEVATION OF LAND SURFACE DATUM (LSD) (FEET NGVD)
72008 DEPTH OF WELL, TOTAL (FEET)
81024 DRAINAGE AREA (SQUARE MILES)
99111 QUALITY ASSURANCE DATA TYPE ASSOCIATED WITH SAMPLE