Well Information and Water-Level Databases

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Data used to prepare the well information and water-level measurement databases used throughout this web site were obtained from the Rio Grande Water Conservation District (RGWCD), the US Bureau of Reclamation (USBR), The US Geological Survey Ground Water Site Inventory Database (GWSI), and the Rio Grande Decision Support System Database (RGDSS).

Download 4.0MB file dbf.zip containing well information & water-level measurement databases in DBF format (modified on Mon Oct 28 18:40:59 2024).

Field definitions for well information database master.dbf

PBPERF: [PM] Bottom of screen from DWR Well Permit files
PGS: [PM] Groundsurface (NED) based on location provided in DWR Well Permit files
PHDAT: [PM] Horizontal data for well location
PLAT: [PM] Latitude based on well location provided in DWR Well Permit files
PLON: [PM] Longitude based on well location provided in DWR Well Permit files
PTD: [PM] Total Depth provided in DWR Well Permit files
PTPERF: [PM] Top of screen from DWR Well Permit files
SWL: [PM] Static depth to water DWR Well Permit files
SWLDATE: [PM] Date of static deth to water measurement DWR Well Permit files
HRS_LAYER: [PM] Model layer selected by HRS
UID: [PM] Unique Well Identifier
ALIAS: [PM] Well names from source agency
AQFR: [PM] Aquifer selected from RGDSS piezometer, Designated in GRSA model, Well depth
AQUIFER: [PM] Selected Aquifer Definition from AQFR or LAYER fields
AQ_SRC: [PM] Source used to select AQUIFER field
BACA: [PM] BACA Well Name
BOT0: [PM] Depth to top of Layer 1 RGDSS Model
BOT1: [PM] Depth to Bottom of Layer 1 RGDSS Model
BOT2: [PM] Depth to Bottom of Layer 2 RGDSS Model
BOT3: [PM] Depth to Bottom of Layer 3 RGDSS Model
BOT4: [PM] Depth to Bottom of Layer 4 RGDSS Model
BOT5: [PM] Depth to Bottom of Layer 5 RGDSS Model
CAWS: [PM] Designated Confined Aquifer Well Sites
DStoPM: [PM] Original source of data
GS: [PM] Selected ground surface elevation (NGD88)
GS_SRC: [PM] Ground surface elevation source
LAT: [PM] Selected Latitude data (NAD83)
LON: [PM] Selected Longitude data (NAD83)
LL_SRC: [PM] Selected Lat/Lon source
LAYER: [PM] Selected RGDSS Model Layer
LAYER_SRC: [PM] RGDSS Model Layer Source
NED3: [PM] Ground surface elevation from National 1/3-Arc Second Elevation Dataset (based on selected LON/LAT)
NED: [PM] Ground surface elevation from National Elevation Dataset (based on selected LON/LAT)
SRTM: [PM] Ground surface elevation from Shuttle Radar Topography Mission (based on selected LON/LAT)
TD: [PM] Selected Total Depth
TGTID: [PM] Calibration Target Well ID
TRS: [PM] Selected Township-Range-Section
VID: [PM] Valley Well Identification
XVAL: [PM] RGDSS Coordinate System Easting
YVAL: [PM] RGDSS Coordinate System Northing
GW_AGENCY: [GWSI] Agency
GW_SID: [GWSI] Site identification number
GW_STA_NAM: [GWSI] Site name
GW_LATDMS: [GWSI] DMS latitude
GW_LONDMS: [GWSI] DMS longitude
GW_LAT: [GWSI] Decimal latitude
GW_LON: [GWSI] Decimal longitude
GW_LL_METH: [GWSI] Latitude-longitude method
GW_LL_ACCU: [GWSI] Latitude-longitude accuracy
GW_HOR_DAT: [GWSI] Latitude-longitude datum
GW_DMS_METH: [GWSI] Decimal Latitude-longitude datum
GW_DIS_COD: [GWSI] District code
GW_STATE: [GWSI] State code
GW_CTY_COD: [GWSI] County code
GW_COUNTRY: [GWSI] Country code
GW_TRS_2: [GWSI] Land net location description
GW_MAP_NAM: [GWSI] Name of location map
GW_MAP_SCL: [GWSI] Scale of location map
GW_GS_ELEV: [GWSI] Altitude of Gage/land surface
GW_ALT_METH: [GWSI] Method altitude determined
GW_GE_ACCU: [GWSI] Altitude accuracy
GW_VERTDAT: [GWSI] Altitude datum
GW_HUC: [GWSI] Hydrologic unit code
GW_BAS_COD: [GWSI] Drainage basin code
GW_TOPO: [GWSI] Topographic setting code
GW_STATION: [GWSI] Site type code
GW_AGE_USE: [GWSI] Agency use of site code
GW_DATAKIND: [GWSI] Flags for the type of data collected
GW_INSTRU: [GWSI] Flags for instruments at site
GW_CONDATE: [GWSI] Date of first construction
GW_INVDATE: [GWSI] Date site established or inventoried
GW_DR_AREA: [GWSI] Drainage area
GW_CDR_AREA: [GWSI] Contributing drainage area
GW_GMTOFF: [GWSI] Mean Greenwich time offset
GW_LTIME: [GWSI] Local standard time flag
GW_RELIA: [GWSI] Data reliability code
GW_GWFILE: [GWSI] Data-other GW files
GW_NAT_AQFR: [GWSI] National aquifer code
GW_AQNAME: [GWSI] Local aquifer code
GW_AQ_TYPE: [GWSI] Local aquifer type code
GW_WEL_DEP: [GWSI] Well depth
GW_HOL_DEP: [GWSI] Hole depth
GW_DD_SRC: [GWSI] Source of depth data
GW_PRO_NUM: [GWSI] Project number
GW_RT: [GWSI] Real-time data flag
GW_WQSTRT: [GWSI] Water quality data begin date
GW_WQEND: [GWSI] Water quality data end date
GW_WQNUM: [GWSI] Water quality data count
GW_GWSTRT: [GWSI] Ground-water data begin date
GW_GWEND: [GWSI] Ground-water data end date
GW_GWNUM: [GWSI] Ground-water data count
GW_WATERUSE: [GWSI] Groundwater use (primary)
GW_SITEUSE: [GWSI] Site use (primary)
GW_ALT_MET: [GWSI] TBD
GW_CDR_ARE: [GWSI] TBD
GW_DATAKIN: [GWSI] TBD
GW_DMS_MET: [GWSI] TBD
GW_NAT_AQF: [GWSI] TBD
SRV01_ID: [RGWCD] 2006 Survey Data IDs
RGWCD_AQ: [RGWCD] Aquifer
RGWCD_GS: [RGWCD] Ground Surface Elevation
RGWCD_COM: [RGWCD] Comments
RGWCD_LAYER: [RGWCD] RGDSS Groundwater Model layer intercepted by well
RGWCD_ID: [RGDSS] Identification Number
RGWCD_TRS: [RGWCD] Township-Range-Section
RGWCD_MP: [RGWCD] Measureing Point Elevation
RGWCD_SU: [RGWCD] Well casing stickup
RGWCD_TD: [RGWCD] Total depth of well
RGWCD_LON: [RGWCD] Longitude (decimal)
RGWCD_LAT: [RGWCD] Latitude (decimal)
RGWCD_LON0: [RGWCD] Longitude (in original format)
RGWCD_LAT0: [RGWCD] Latitude (in original format)
RGWCD_DATUM: [RGWCD] LON/LAT Datum
RGWCD_BPERF: [RGWCD] Top of screen perforation
RGWCD_TPERF: [RGWCD] Bottom of screen perforation
RGWCD_NAD: [RGWCD] Vertical Datum
DIV_AQ: [DIVIDE] Aquifer
DIV_COMM: [DIVIDE] Comment
DIV_DATUM: [DIVIDE] Elevation Datum
DIV_GS_ELEV: [DIVIDE] Ground Surface (NAVD88)
DIV_ID: [DIVIDE] Well ID
DIV_LAT: [DIVIDE] Latitude (NAD83)
DIV_LON: [DIVIDE] Longitude (NAD83)
DIV_MEAS: [DIVIDE] Measurement Location
DIV_MP: [DIVIDE] Measurement Point Elevation
DIV_NAD: [DIVIDE] Horizontal Datum
DIV_SRC: [DIVIDE] Oritginal source file
DIV_SU: [DIVIDE] Casing stick up
RGWCD_ID: [RGDSS] Identification Number
RGDSS_GS: [RGDSS] Ground Surface Elevation
RGDSS_DATUM: [RGDSS] Horizontal Datum
RGDSS_PERM: [RGDSS] Well permit number
RGDSS_PLSS: [RGDSS] Township-Range-Section
RGDSS_LON: [RGDSS] Longitude
RGDSS_LAT: [RGDSS] Latitude
RGDSS_NAD: [RGDSS] Vertical Datum
RGDSS_VID: [RGDSS] Valley Identification Number
RGDSS_TD: [RGDSS] Total Depth
RGDSS_AQFR: [RGDSS] Unconfined or confined aquifer layer
RGDSS_LAYER: [RGDSS] RGDSS Groundwater Model Layer
EW_NAD: [USBR] Vertical Datum
EW_DATUM: [USBR] Horizontal Datum
EW_AQFR: [USBR] Aquifer
EW_GS_ELEV: [USBR] Ground Surface Elevation
EW_LAT: [USBR] Latitude
EW_LON: [USBR] Longitude
EW_SID: [USBR] Site Identification Number
EW_TD: [USBR] Total Depth
EW_TRS: [USBR] Township-Range-Section
DUNES_ID: [HRS] Original DUNES Identification
DUNE_LAYER: [HRS] Layer Definitions from Dunes data
HRS_AQUIFER: [HRS] Aquifer Type
HRS_DATUM: [HRS] Horizontal Datum
HRS_GS: [HRS] Ground Surface Elevation
HRS_LAT: [HRS] Latitude
HRS_LON: [HRS] Longitude
HRS_NAD: [HRS] Vertical Datum
HRS_SEQ: [HRS] Sequence Number
HRS_SOURCE: [HRS] Data Source
HRS_X_UTM: [HRS] UTM Easting
HRS_Y_UTM: [HRS] UTM Northing
JCHA_DATE: [JHCA] Construction Date
JCHA_DATUM: [JHCA] Horizontal Datum
JCHA_DESC: [JHCA] Description
JCHA_GS: [JHCA] Ground Surface Elevation
JCHA_HRS_GS: [JHCA] Ground Surface Elevation from HRS
JCHA_NAD: [JHCA] Vertical Datum
JCHA_SPCS_E: [JHCA] State Place Coordinate System Easting
JCHA_SPCS_N: [JHCA] State Place Coordinate System Northing
JCHA_TD: [JHCA] Total Depth
JCHA_TRS: [JHCA] Township-Range-Section
GRSA_ID: [GSDNP] GSDNP Well Identification Number
GRSA_AQFR: [GSDNP] Aquifer
GRSA_MP: [GSDNP] Measuring Point Elevation
GRSA_TPERF: [GSDNP] Top of Perforations
GRSA_BPERF: [GSDNP] Bottom of Perforations
CSU_GS: [CSU] Ground Surface Elevation
NPS_AQFR: [CSU] Aquifer
NPS_GS: [CSU] Ground Surface Elevation
NPS_TOC: [CSU] Top of Casing
NPS_TOS: [CSU] Top of Screen
NPS_BOS: [CSU] Bottom of Screen
NPS_TD: [CSU] Total Depth
NPS_CDATE: [CSU] Construction Date
NPS_CNTY: [CSU] County
NPS_DATUM: [CSU] Horizontal Datum
NPS_HUC: [CSU] Hydrologic Unit Code
NPS_ID: [CSU] Well Name
NPS_TYPE: [CSU] Well type
NPS_UTM_X: [CSU] UTM83-N13 X Coordinate
NPS_UTM_Y: [CSU] UTM83-N13 Y Coordinate
NPS_X: [CSU] RGDSS83 X Coordinate
NPS_Y: [CSU] RGDSS83 Y Coordinate
CON_LAT: [CSU] Permit Water-level Well Latitude
CON_LON: [CSU] Permit Water-level Well Longitude
CON_NAD: [CSU] Permit Water-level Well Datum
HYD: [CSU] MODFLOW HYDMOD ID
CON_TD: [CSU] TD for Conejos well (from well permit files)
SAG_CSYS: [CSU] Saguache Ck wells coordinate system
SAG_DESC: [CSU] Saguache Ck wells description
SAG_GS: [CSU] Saguache Ck wells groun sruface elevation
SAG_HDAT: [CSU] Saguache Ck wells horizontal Datum
SAG_LAT: [CSU] Saguache Ck wells Latitude
SAG_LAYER: [CSU] Saguache Ck wells model layer
SAG_LOC: [CSU] Saguache Ck wells location description
SAG_LON: [CSU] Saguache Ck wells longitude
SAG_MP: [CSU] Saguache Ck wells measuring point (ground surface)
SAG_MPDESC: [CSU] Saguache Ck wells measuring point description
SAG_OWNER: [CSU] Saguache Ck wells owner name
SAG_SU: [CSU] Saguache Ck wells sitck up
SAG_UTMX: [CSU] Saguache Ck wells UTM-N13 easting
SAG_UTMY: [CSU] Saguache Ck wells UTM-N13 northing
SAG_VDAT: [CSU] Saguache Ck wells Vertical Datum
SAG_VID: [CSU] Saguache Ck wells Valley ID
SLC_AQFR: [CSU] San Luis Ck wells Aquifer type
SLC_BPERF: [CSU] San Luis Ck wells bottom of perf
SLC_HDAT: [CSU] San Luis Ck wells horizontal datum
SLC_LAT: [CSU] San Luis Ck wells latitude
SLC_LON: [CSU] San Luis Ck wells longitude
SLC_PERMI: [CSU] San Luis Ck wells permit number
SLC_TD: [CSU] San Luis Ck wells total depth
SLC_TPERF: [CSU] San Luis Ck wells top of perf
SLC_USE: [CSU] San Luis Ck wells use
SLC_WDID: [CSU] San Luis Ck wells WDID
SLC_XVAL: [CSU] San Luis Ck wells RGDSS83 X coordinate
SLC_YIELD: [CSU] San Luis Ck wells yield
SLC_YVAL: [CSU] San Luis Ck wells RGDSS83 Y coordinate
SLC_GS: [CSU] San Luis Ck ground elevation
BPERF: [CSU] Bottom of screen perforations
TPERF: [CSU] Top of screen perforations
PERMIT: [CSU] Well Permit Number
PERMITSRC: [CSU] Well Permit Number Source
VG_AQFR: [V] Aquifer Type
VG_GS: [V] Ground Surface NAVD88
VG_HDAT: [V] Horizontal Datum
VG_LAT: [V] Latitude NAD83
VG_LON: [V] Longitude NAD83
VG_TD: [V] Total Depth
VG_XVAL: [V] Easting RGDSS83
VG_YVAL: [V] Northing RGDSS83
CWCD_AQFR: [V] Aquifer Type
CWCD_LAT: [V] Latitude NAD83
CWCD_LON: [V] Longitude NAD83
CWCD_NAD: [V] Horizontal Datum
CWCD_NAME: [V] CWCD well name
CWCD_LABEL: [V] CWCD short well name
CWCD_BPERF: [V] CWCD bottom of perf
CWCD_GS: [V] CWCD ground surface
CWCD_TD: [V] CWCD well depth
CWCD_TPERF: [V] CWCD bottom of perf
CWCD_LAYER: [V] CWCD layer assignment
URG_ID: [V] Upper Rio Grande ID
URG_GS: [V] Upper Rio Grande Ground Surface
URG_MP: [V] Upper Rio Grande Measuring Point
URG_NAD: [V] Upper Rio Grande Datum
URG_SU: [V] Upper Rio Grande Stickup
URG_UTMX: [V] Upper Rio Grande UTM easting
URG_UTMY: [V] Upper Rio Grande UTM northing
DWR_ID: [V] DWR Well ID
DWR_LAT: [V] DWR Latitude
DWR_LON: [V] DWR Longitude
DWR_NAD: [V] DWR NAD
DWR_GS: [V] DWR Ground Surface Elevation
DWR_DATUM: [V] DWR Vertical Datum
DWR_BPERF: [V] DWR Bottom of Perforation
DWR_TPERF: [V] DWR Top of Perforation
DWR_LAYER: [V] DWR Layer assignment

Field definitions for well information REMARKS database rmks.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON) where available. Otherwise, consists of ID in source database
C184: [GWSI] Remark date: YYYYMMDD
C185: [GWSI] Remark
C311: [GWSI] Remark record sequence number
C463: [GWSI] Person creating record
C464: [GWSI] Date created
C465: [GWSI] Person updating record
C788: [GWSI] Record type
C789: [GWSI] Date of last update
C870: [GWSI] Record ready for web

Field definitions for well information PRODUCTION (Discharge) database prod.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
C148: [GWSI] Date discharge measured
C150: [GWSI] Discharge in gpm
C151: [GWSI] Source of discharge data
C152: [GWSI] Method discharge measured
C153: [GWSI] Producing water level
C154: [GWSI] Static water level
C155: [GWSI] Source of water-levels dat
C156: [GWSI] Method water levels measured
C157: [GWSI] Duration of discharge before producing level
C272: [GWSI] Specific capacity
C309: [GWSI] Drawdown
C430: [GWSI] Person creating record
C431: [GWSI] Date created
C432: [GWSI] Person updating record
C702: [GWSI] Date of last update
C703: [GWSI] Type of discharge: P = pump, F = flow
C859: [GWSI] Record ready for Web: Codes are defined below.
Y = The record has been checked and is ready for display.
C = The record has not been checked.
N = The record has failed one or more data verification checks.
P = The record is proprietary.
L = Display of the record has been turned off.

Field definitions for well information AQUIFER database aq.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
C095: [GWSI] Date data collected: YYYYMMDD
C126: [GWSI] Static Water Level
C132: [GWSI] Percentage of the total yield of the well that is contributed by this lithologic unit, if known.
C256: [GWSI] Aquifers record sequence number
C469: [GWSI] Person creating record
C470: [GWSI] Date created
C471: [GWSI] Person updating record
C750: [GWSI] Record type
C751: [GWSI] Date of last update
C872: [GWSI] Record Ready for Web: Codes are defined below.
Y = The record has been checked and is ready for display.
C = The record has not been checked.
N = The record has failed one or more data verification checks.
P = The record is proprietary.
L = Display of the record has been turned off.

Field definitions for well information CONSTRUCTION database cons.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
C060: [GWSI] Date of Completed Construction
C063: [GWSI] Name of Contractor/Driller
C064: [GWSI] Source of Construction Data
C065: [GWSI] Method of Construction: Codes are defined below.
A = Air-rotary
B = Bored or augered
C = Cable-tool
D = Dug
H = Hydraulic rotary
J = Jetted
P = Air percussion
R = Reverse rotary
T = Trenching
V = Driven
W = Drive and wash
Z = Other (explain in remarks)
C066: [GWSI] Type of Finish: Codes are defined below.
C = Porous concrete
F = Gravel pack w/perforations
G = Gravel pack w/screen
H = Horizontal gallery
O = Open end
P = Perforated or slotted
S = Screen
T = Sand point
W = Walled
X = Open hole
Z = Other (explain in remarks)
C067: [GWSI] Type of Seal: Codes are defined below.
B = Bentonite
C = Clay or cuttings
G = Cement grout
N = None
Z = Other (explain in remarks)
C068: [GWSI] Depth to Bottom of Seal: feet below land surface
C069: [GWSI] Method of Development: Codes are defined below.
A = Pumped with air lift
B = Bailed
C = "Blown" or surged w/compressed air
J = Washed or jetted
N = None
P = Pumped
S = Surged with surge block
C070: [GWSI] Hours of Development
C071: [GWSI] Special Treatment During Development: Codes are defined below.
C = Chemical (acid, and so forth)
D = Dry ice
E = Explosives
F = Deflocculent
H = Hydrofracturing
M = Mechanical abrasion
Z = Other (explain in remarks)
C403: [GWSI] Person Creating Record
C404: [GWSI] Date/time that construction record was created
C405: [GWSI] Person Updating Record
C754: [GWSI] Record Type
C755: [GWSI] Date of Last Update
C850: [GWSI] Record Ready for Web: Codes are defined below.
Y = The record has been checked and is ready for display.
C = The record has not been checked.
N = The record has failed one or more data verification checks.
P = The record is proprietary.
L = Display of the record has been turned off.

Field definitions for well information GEOHYDROLOGY database geoh.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
C091: [GWSI] Depth to Top of Unit in feet below land surface
C092: [GWSI] Depth to Bottom of Unit in feet below land surface
C093: [GWSI] Unit Identifier: Codes defined below.
110QRNR = Quaternary System, 111ALFP = Alluvium, Flood Plain
111AVMT = Alluvium, terrace
111VLFL = Valley-Fill Deposits
112SNTF = Santa Fe Formation
120TRTR = Tertiary System
121ALMS = Alamosa Formation
C096: [GWSI] Lithology: Codes defined below.
ALVM Alluvium
GRDS Gravel, sand
SAND Sand
SDGL Sand and gravel
C097: [GWSI] Lithologic Modifier
C304: [GWSI] Contributing Unit: Codes are defined below.
P = Principal contributing aquifer (only one per site)
S = Secondary contributing aquifer
N = Contributes no water
U = Unknown contribution
C466: [GWSI] Person Creating Record
C467: [GWSI] Date Created
C468: [GWSI] Person Updating Record
C748: [GWSI] Record Type
C749: [GWSI] Date of last update
C871: [GWSI] Record Ready for Web: Codes are defined below.
Y = The record has been checked and is ready for display.
C = The record has not been checked.
N = The record has failed one or more data verification checks.
P = The record is proprietary.
L = Display of the record has been turned off.

Field definitions for well information LOG database log.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
C199: [GWSI] Type of log: Codes are defined below.
DT = Drilling time
DR = Drillers log
DG = Geologists log
DC = Core log
WC = Casing collar log
WD = Borehole deviation log
AS = Sonic log
AV = Acoustic velocity log
AW = Acoustic waveform log
AT = Acoustic televiewer log
CP = Caliper log
CS = Single caliper log
CT = Three caliper log
CM = Multi caliper log
CA = Acoustic caliper log
EE = Electric log
ER = Single-point resistance
EP = Spontaneous potential
EL = Long-normal resistivity
ES = Short-normal resistivity
EF = Focused resistivity log
ET = Lateral resistivity log
EN = Microresistivity log
FH = Heat-pulse flowmeter log
FE = EM flowmeter log
FD = Doppler flowmeter log
FA = Radioactive tracer log
FY = Dye tracer log
FB = Brine tracer log
MD = EM dual induction log
MM = Magnetic log
MS = Magnetic susceptibility
MI = EM induction log
MR = Radar reflection image log
MV = Radar direct-wave velocity
MA = Radar direct-wave amplitude
NG = Gamma log
NS = Spectral gamma log
NA = Gamma-gamma log
NN = Neutron log
NT = Neutron activation log
NM = Nuclear magnetic resonance
OV = Video log
OF = Fisheye video log
OS = Sidewall video log
OT = Optical televiewer log
EC = Microresist focused log
EO = Microresist lateral log
ED = Dipmeter log
FC = Fluid conductivity log
FR = Fluid resistivity log
FT = Fluid temperature log
FF = Fluid diff temperature
FV = Fluid velocity log
FS = Spinner flowmeter log
ZF = Gamma, fluid resist, temp
ZI = Gamma and EM induction log
ZR = Long/short normal resist log
ZT = Fluid resist, temperature
ZM = EM flowmeter, resist, SP log
ZN = Long/short normal resist, SP
ZP = Single point resist, SP
ZE = Gamma l/s resist, SP
OR = Other
C200: [GWSI] Depth to the top of the logged interval in feet below land surface
C201: [GWSI] Depth to the bottom of the logged interval, in feet below land surface
C202: [GWSI] Source of Data: Codes are defined below.
A = Reported by another government agency. Do not use "A" if the reporting agency is the owner of the well--use "O".
D = From driller's log or report.
G = Private geologist-consultant or university associate.
L = Depth interpreted from geophysical logs by personnel of source agency.
M = Memory (owner, operator, driller).
O = Reported by the owner of the well.
R = Reported by person other than the owner, driller, or another government agency.
S = Measured by personnel of reporting agency.
Z = Other source (explain in remarks).
C448: [GWSI] Person Creating Record
C449: [GWSI] Date Created
C450: [GWSI] Person Updating Record
C778: [GWSI] Record Type
C779: [GWSI] Date of Last Update
C865: [GWSI] Record Ready for Web: Codes are defined below.
Y = The record has been checked and is ready for display.
C = The record has not been checked.
N = The record has failed one or more data verification checks.
P = The record is proprietary.
L = Display of the record has been turned off.

Field definitions for water-level measurement database wl.dbf

UID: Unique Site Identifier: Consists of GWSI Site ID (approximate LAT/LON+COUNTER) where available. Otherwise, consists of ID in source database
DATE: Date of measurement
DTW: Depth to water in feet below ground surface
SOURCE: Source of data: G = US Geological Survey GWSI Database, R = US Bureau of Reclamation Database, D = RGWCD Database, S = RGDSS Database, T = Transducer

The GWSI field decriptions were paraphrased from USGS Documentation