Data Dictionary: Terms and symbols commonly found in the data files are
alphabetically listed and defined here.

NOTE: All measurements of chemical constituents in surface water and bottom
       sediments are complemented by a remark data field. This field will
       either have a less than (<) symbol or it will be blank. Less than (<) =
       measured amount was less than reporting limit; blank = measured amount
       was above reporting limit.This is shown for silver below but is omitted
       from the rest of this data dictionary.
       
NOTE2: Missing values in the dbase file are represented as -99, -997, or -9.

ag:   Silver, dissolved (ug/L as Ag).
ag.r: Silver, dissolved (ug/L as Ag), remarks. This field is either blank or
       it has a less than (<) symbol:
       < (less than) = measured amount was less than reporting limit.
       blank = above reporting limit.
ag.bm: Silver, total in bottom material (ug/g as Ag).
ag.bm.r: Silver, total in bottom material, remarks. This field is either
       blank or it has a less than (<) symbol:
       < (less than) = measured amount was less than reporting limit.
       blank = above reporting limit.
ag.t: Silver, total (ug/L as Ag)
agyanal: Analyzing agency
       PRIV =  Water sample analyzed by Private Lab
       SJVDP = Water sample analyzed by San Joaquin Valley Drainage Program
       USGS =  Water sample analyzed by United States Geological Survey
       WYDOA = Water sample analyzed by Wyoming Department of Agriculture
agycol: Collecting agency
       USGS =  Water sample collected by United States Geological Survey
       SDWRI = Water sample collected by South Dakota Water Resources 
airt: Temperature, air (deg C)
al.bm: Aluminum, total in bottom material (ug/g as AL).
al.t: Aluminum, total (ug/L as Al)
alk:  Alkalinity, titration to pH 4.5, field, (mg/L AS CaCO3)
alk.co3.it:Alkalinity, carbonate, incremental titration, field (mg/L as CaCO3)
alk.dis.it:Alkalinity, total dissolved, field (mg/L)
alk.lab: Alkalinity, titration to pH 4.5, laboratory, (mg/L as CaCO3)
alk.it: Alkalinity, carbonate, incremental titration, field (mg/L as CaCO3)
alk.ww.fe: Alkalinity, water, whole, total, fixed endpoint titration, lab,
           mg/l as caco3.
alk.ww.gt: Alkalinity, water, whole, gran titration, field, as caco3, mg/l
altitude: Altitude of data collection site, in feet above msl
area: Abbreviated name identifying NIWQP study area
as:  Arsenic, dissolved (ug/L as As)
as.t: Arsenic, total (ug/L as As)
as.bm: Arsenic in bottom sediment (mg/kg dry weight)
au.bm: Gold in bottom material (ug/kg as AU)
b:    Boron, dissolved (ug/L as B)
ba:   Barium, dissolved (ug/L as Ba)
ba.bm: Barium, total in bottom material (ug/g as Ba)
background: 
       C = Site is either within or downgradient from irrigated areas 
            within the study area
       R = Site is upgradient of irrigated areas within the study area
baro.p: Barometric pressure, in mm of Hg
basin:  Indicates drainage basin type
         O =   Lakes in study area are flow through
         M =   Lakes in study area are mixture of flow-through and terminal
         C =   Lakes in study area are terminal
ba.t:   Barium, total (ug/L as Ba)
be:     Beryllium, dissolved (ug/L as Be)
be.bm:  Beryllium, total in bottom material (ug/g as Be)
be.t:   Beryllium, total (ug/L as Be)
bi.bm:  Bismuth, total in bottom material (ug/g as Bi)
br:     Bromide, dissolved (mg/L as Br)
b.t:    Boron, total (ug/L as B)
b.xw.bm: Boron, hot water extractable, in bottom material, (ug/L as B)
ca:    Calcium, dissolved (mg/L as Ca)
ca.bm: Calcium, recoverable from bottom material, dry wt. (mg/kg as Ca)
ca.t:  Calcium, total (mg/L as Ca)
cd:    Cadmium, dissolved (ug/L as Cd)
cd.bm: Cadmium, total in bottom material (ug/g as Cd)
cd.t:  Cadmium, total (ug/L as Cd)
ce.bm: Cesium, total in bottom material (ug/g as Ce)
cl:    Chloride, dissolved (mg/L as Cl)
co:    Cobalt, dissolved (ug/L as Co)
co3:   Carbonate ion (mg/L as CO3)
co3.ft: Carbonate, dissolved field titration
co3.it: Carbonate, incremental titration, field (mg/L)
co3.it.2: Carbonate, incremental titration, field (mg/L as CO3)
co.bm: Cobalt, total in bottom material (ug/g as Co)
cond:  Specific conductance, field (uS/cm at 25 deg C)
cond.lab: Specific conductance, laboratory (uS/cm at 25 deg C)
c.org.bm: Carbon, organic, sediment, bed material, percent
co.t:  Cobalt, total (ug/L as Co)
cr:    Chromium, dissolved (ug/L as Cr)
cr.bm: Chromium, total in bottom material (ug/g as Cr)
cr.hex: Chromium, hexavalent (ug/L as Cr)
cr.t:  Chromium, total (ug/L as Cr)
c.tot.bm: Carbon, inorganic + organic, total, bottom material (g/kg)
cu:    Copper, dissolved (ug/L as Cu)
cu.bm: Copper, total in bottom material (ug/g as Cu)
cu.t:  Copper, total recoverable (ug/L as Cu)
doi:   Identifies whether the analysis was made as part of a NIWQP
        investigation, Y = yes  N = no
dox:   Oxygen, dissolved (DO) (mg/L)
doxpct: Oxygen, dissolved (percent of saturation)
ds.sum: Solids, sum of constituents, dissolved (mg/L)
f:     Fluoride, dissolved (mg/L as F)
fe:    Iron, dissolved (ug/L as Fe)
fe.bm: Iron, total in bottom material (ug/g as Fe)
fe.t:  Iron, total (ug/L as Fe)
fraction: <2.0   Less than 2 mm fraction of bottom material (includes <0.062 
           mm fraction)
           <0.062 Less than 0.062 mm fraction of bottom material
ga.bm:  Gallium, total in bottom sediments (ug/g as Ga)
geology: Geologic formations in study area, from King, P.B., and Beikman
           H.M., 1974, Geologic map of the United States (exclusive of Alaska
           and Hawaii): U.S. Geological Survey Special Geologic Map, Reston,
           VA.
         Symbols are as follows: 
            Stratified Sequences, Mainly Marine
         Q      Quaternary, undifferentiated
         UK     Upper Cretaceous, undifferentiated
         UK1    Upper Cretaceous, Woodbine and Tuscaloosa Groups
         UK2    Upper Cretaceous, Austin and Eagle Ford Groups
         UK3    Upper Cretaceous, Taylor Groups
         UK3A   Upper Cretaceous, subdivision of Taylor Groups
         UK4    Upper Cretaceous, Navarro Groups
         UPZ    Upper Paleozoic, undifferentiated
            Continental Deposits
         TEC    Eocene Continental Deposits
         TPC    Pliocene Continental Deposits
         TXC    Paleocene Continental Deposits
            Volcanic Rocks
         QV     Quaternary volcanic rocks
         TMV    Miocene volcanic rocks
         TMF    Miocene felsic volcanic rocks
         TPV    Pliocene volcanic rocks
            Plutonic and Intrusive Rocks
         XG     Precambrian granitic rocks
            Metamorphic Rocks
         XM     Precambrian orthogneiss and paragneiss
hardness: Hardness, total (mg/L as CaCO3)
hco3:   Bicarbonate ion (mg/L as HCO3)
hco3.ft: Bicarbonate, dissolved field titration
hco3.it: Bicarbonate, incremental titration, field (mg/L)
hco3.it.2: Bicarbonate, incremental titration, field (mg/L as HCO3)
hg:    Mercury, dissolved (ug/L as Hg)
hg.bm: Mercury, recoverable from bottom material, dry wt.(mg/kg as Hg)
hg.t:  Mercury, total recoverable (ug/L as Hg)
i:     Iodide, dissolved (mg/L as I)
k:     Potassium, dissolved (mg/L as K)
k.bm:  Potassium, recoverable from bottom material, dry wt. (mg/kg as K)
k.t:   Potassium, total (mg/L as K)
la.bm: Lanthanum, total in bottom material (ug/g as La)
latitude: Latitude of data collection site, in degrees, minutes, seconds
li:    Lithium, dissolved (ug/L as Li)
li.bm: Lithium, recoverable from bottom material, dry wt. (mg/kg as Li)
li.t:  Lithium, total (UG/L as LI)
longitude: Longitude of data collection site, in degrees, minutes, seconds
matrix: Sample Matrix
        BC     Borehole Coring
        BM     Bottom Material
        GW     Ground Water
        IW     Interstitial Water
        SC     Salt Crust
        SO     Soil
        SS     Suspended Sediment
        SW     Surface Water
mg:    Magnesium, dissolved (mg/L as Mg)
mg.bm: Magnesium, recoverable from bottom material, dry wt. (mg/kg as Mg)
mg.t:  Magnesium, total (mg/L as Mg)
mn:    Manganese, dissolved (ug/L as Mn)
mn.bm: Manganese, total in bottom material (ug/g as Mn)
mn.t:  Manganese, total (ug/L as Mn)
mo:    Molybdenum, dissolved (ug/L as Mo)
mo.bm: Molybdenum, total in bottom material (ug/g as Mo)
mo.t:  Molybdenum, total (UG/L as MO)
na:    Sodium, dissolved (mg/L as Na)
na.bm: Sodium, recoverable from bottom material, dry wt. (mg/kg as Na)
na.t:  Sodium, total (mg/L as Na)
nb.bm: Niobium, total in bottom material (ug/g as Nb)
nd.bm: Neodymium, total in bottom material (ug/g as Nd)
ni:    Nickel, dissolved (ug/L as Ni)
ni.bm: Nickel, total in bottom material (ug/g as Ni)
ni.t:  Nickel, total (ug/L as Ni)
ntu:   Turbidity (NTU)
pb:    Lead, dissolved (ug/L as Pb)
pb.bm: Lead, total in bottom material (ug/g as Pb)
p.bm:  Phosphorus, total in bottom material, dry weight (mg/kg as P)
pb.t:  Lead, total (ug/L as Pb)
ph:    pH, field (standard units)
phlab: pH, lab (standard units)
q:     Discharge, instantaneous stream (cubic feet per second)
qaqc:  Identifies whether the sample was collected for quality assurance
        purpose, Y =yes and N =no
recno: USGS identifer used to identify sample in NWIS database
redox: Redox, (millivolts)
res105.t:Solids, residue on evaporation at 105 deg C, total (mg/L)
res180: Solids, residue on evaporation at 180 deg C, dissolved (mg/L)
samp.date: Date of sample collection (in DD-MM-YY format)
samp.meth: Sample collection method
         EDI =    Equal Discharge Increment
         ETR =    Discharge Integrated, Equal Transit Rate
         EWI =    Equal Width Increment
         GRAB =   Grab Sample (Dip)
         MVERT =  Multiple Verticals
         OTB =    Open-top Bailer
         SQZ =    Squeeze Pump
         SUBM =   Submersible Pump
         SVERT =  Single Vertical
         THIEF =  Thief Sample
         VDORN =  Van Dorn Sampler
         WB =     Weighted Bottle
         OTHER =  Method other than those described above
samp.time: Time of sample collection (military time)
sar:   Sodium adsorption ratio
sb:    Antimony, dissolved (ug/L as Sb)
sb.t:  Antimony, total (UG/L as SB)
sc.bm: Scandium, total in bottom material (ug/g as SC)
se:    Selenium, dissolved (ug/L as Se)
se.bm: Selenium, total in bottom material (ug/g as Se)
se.t:  Selenium, total (ug/L as Se)
si:    Silica, dissolved (mg/L as Si02)
site:  Identification name or number used in published report, unique
        within a study area. If different names for the same site were used
        in reconnaissance and detailed investigation reports, both 
        names are used and the identifier from the reconnaissance
        report is enclosed in parentheses
sitefwse: Free water surface evaporation rate at the site
sitegeology: Geology formation that forms the bedrock at the site. See
            'geology'
siteid: Unique 9 or 15 digit number identifier assigned on the basis of
        geographic location
sitetype: Description of whether the site is surface-water, ground-water, etc.
         DR =  Drain
         GW =  Ground-water
         LK =  Lake or pond
         SP =  Spring
         SW =  Surface-Water
so4:    Sulfate, dissolved (mg/L as SO4)
so4.unc: Sulfate, water, dissolved, uncorrected, mg/l
source: Whether the site represents the source water for irrigation in the
         study area
         Y =   Site represents source water for irrigation
         N =   Site does not represent source water for irrigation
sr:     Strontium, dissolved (ug/L as Sr)
sr.bm: Strontium, total in bottom material (ug/g as Sr)
sr.t:  Strontium, total (UG/L as SR)
subarea: Abbreviated name identifying a sub-area within a NIWQP study area
         AMFALLS   =  AMFALLS
         ANGOSTURA =  ANGOSTURA
         BELLE     =  BELLE
         COLUMBIA  =  COLUMBIA
         DOLORES   =  DOLORES
         GRANDVALLE =  GUNNISON
         UNCOMPAGHR =  GUNNISON
         HUMBOLDT  =  HUMBOLDT
         KENDRICK  =  KENDRICK
         KLAMATH   =  KLAMATH
         LOWERCOLO =  LOWERCOLO
         LOWERRIO  =  LOWERRIO
         MALHEUR   =  MALHEUR
sym:    Site type,
         C = site within or downstream of irrigation
         R = reference site
temp:   Temperature, water (deg C)
th.bm:  Thorium in bottom material (ug/kg as Th)
ti.bm:  Titanium, total in bottom material (ug/g as Ti)
tl:     Thallium dissolved (ug/L as Tl)
tl.t:   Thallium total (UG/L as TL)
u:      Uranium, dissolved (ug/L as U)
u.bm:   Uranium natural total in bottom material (ug/g)
u.t:    Uranium, natural total (ug/L as U)
v:      Vanadium, dissolved (ug/L as V)
v.bm:   Vanadium, total in bottom material (ug/g as V)
well.depth: Well depth of ground-water data collection site, in feet below
            land surface
wtr.level:Ground-water level, in feet below land surface
y.bm:   Yttrium, total in bottom material (ug/g as Y)
yb.bm:  Ytterbium in bottom material (ug/kg)
zn:     Zinc, dissolved (ug/L as Zn)
zn.bm:  Zinc, total in bottom material (ug/g as Zn)
zn.t:   Zinc, total (ug/L as Zn)