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Water Quality Samples for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.
To view additional data-quality attributes, output the results using these options: one result per row, expanded attributes.
Additional precautions are here.

USGS 12323700 Mill Creek at Opportunity, MT

Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'51.76", Longitude 112°49'11.19" NAD83
Drainage area 42.5  square miles
Gage datum 04,940 feet above NAVD88
Output formats
Parameter Group Period of Record table
Inventory of available water-quality data for printing
Inventory of water-quality data with retrieval
Tab-separated data, one result per row
Tab-separated data one sample per row with remark codes combined with values
Tab-separated data one sample per row with tab-delimiter for remark codes
Reselect output format
Sample
Datetime		 Time
datum 		 Time
datum
reliability
code 		 Sample
Medium
Code 		 Agency
Collecting
Sample,
Code 



Stream
width,
feet
(00004)


Temper-
ature,
water,
deg C
(00010)


Temper-
ature,
air,
deg C
(00020)



Weather
WMO
code
(00041)



Dis-
charge,
ft3/s
(00060)
Number
of
sam-
pling
points,
count
(00063)



Gage
height,
feet
(00065)		 Specif-
ic
conduc-
tance,
wat unf
uS/cm @
25 degC
(00095)		 Hydro-
gen
ion,
water,
unfltrd
calcd,
mg/L
(00191)
pH,
water,
unfltrd
field,
std
units
(00400)
pH,
water,
unfltrd
lab,
std
units
(00403)

Carbon
dioxide
water,
unfltrd
mg/L
(00405)

Organic
carbon,
water,
fltrd,
mg/L
(00681)

Hard-
ness,
water,
mg/L as
CaCO3
(00900)		 Noncarb
hard-
ness,
wat flt
lab,
mg/L as
CaCO3
(00905)


Calcium
water,
fltrd,
mg/L
(00915)

Magnes-
ium,
water,
fltrd,
mg/L
(00925)


Sodium,
water,
fltrd,
mg/L
(00930)


Sodium
adsorp-
tion
ratio
(00931)
Sodium
frac-
tion
of
cations
percent
(00932)

Potas-
sium,
water,
fltrd,
mg/L
(00935)

Chlor-
ide,
water,
fltrd,
mg/L
(00940)


Sulfate
water,
fltrd,
mg/L
(00945)

Fluor-
ide,
water,
fltrd,
mg/L
(00950)

Silica,
water,
fltrd,
mg/L as
SiO2
(00955)


Arsenic
water,
fltrd,
ug/L
(01000)


Arsenic
water,
unfltrd
ug/L
(01002)


Cadmium
water,
fltrd,
ug/L
(01025)


Cadmium
water,
unfltrd
ug/L
(01027)


Copper,
water,
fltrd,
ug/L
(01040)
Copper,
water,
unfltrd
recover
-able,
ug/L
(01042)
Iron,
water,
unfltrd
recover
-able,
ug/L
(01045)


Iron,
water,
fltrd,
ug/L
(01046)


Lead,
water,
fltrd,
ug/L
(01049)
Lead,
water,
unfltrd
recover
-able,
ug/L
(01051)		 Manga-
nese,
water,
unfltrd
recover
-able,
ug/L
(01055)

Manga-
nese,
water,
fltrd,
ug/L
(01056)


Zinc,
water,
fltrd,
ug/L
(01090)
Zinc,
water,
unfltrd
recover
-able,
ug/L
(01092)		 Alka-
linity,
wat flt
fxd end
lab,
mg/L as
CaCO3
(29801)

Gage
height
above
datum
meters
(30207)



Dis-
charge,
m3/s
(30208)


Transit
rate,
sampler
ft/s
(50015)


Site
visit
purpose
code
(50280)		 Turbdty
white
light,
det ang
90+/-30
corrctd
NTRU
(63676)		 Dis-
solved
solids,
sum of
consti-
tuents,
mg/L
(70301)
Dis-
solved
solids,
water,
tons/
acre-ft
(70303)		 Suspnd.
sedimnt
sieve
diametr
percent
<0.0625
mm
(70331)



Sample
purpose
code
(71999)

Sampler
nozzle
mater-
ial,
code
(72219)

Sampler
nozzle
di-
ameter,
code
(72220)		 Sus-
pended
sedi-
ment
concen-
tration
mg/L
(80154)		 Vel-
city
at
point
in
stream,
ft/s
(81904)


Sam-
pling
method,
code
(82398)



Sampler
type,
code
(84164)
Sample
split-
ter
type,
field,
code
(84171)
Bottle
or bag
sampler
mater-
ial,
code
(84182)		 Specif.
conduc-
tance,
wat unf
lab,
uS/cm @
25 degC
(90095)

Type
of
repli-
cate,
code
(99105)		 Type
of
sample
related
QA
data,
code
(99111)		 1 mL
4.5 N
H2SO4
preser-
vative
lot
number
(99156)		 2 mL
7.7 N
HNO3
preser-
vative
lot
number
(99159)		 100
uS/cm
KCl
conduct
stand-
ard lot
number
(99161)		 500
uS/cm
KCl
conduct
stand-
ard lot
number
(99163)		 750
uS/cm
KCl
conduct
stand-
ard lot
number
(99164)


pH 10
Buffer
lot
number
(99171)


pH 4
Buffer
lot
number
(99172)


pH 7
Buffer
lot
number
(99173)
0.45 um
capsule
filter
NWIS
lot
number
(99206)
2017-10-23 16:45
 MDT
 K
 WS
 USGS-WRD
 15.0 6.0 9.0   9.9 15 2.19 186 0.00001 8.0 8.0 1.6 2.95 85.0 7 23.6 6.32 5.60 0.26 12 0.94 0.63 16.3 0.34 14.0 22.3 22.8 0.113 0.15 2.6 3.2 119 63.2 0.124 0.31 10.8 7.49 6.6 8 78.3 0.67 0.28   1001 < 2.0 115 0.16 63       2 1.80 10 3070 50 3 186     40236 40241 30529 30522   20269   20264 10044
2018-03-26 17:35
 MDT
 K
 WS
 USGS-WRD
 19.0 4.0 4.5   7.2 10 2.10 225 0.00001 8.2 8.1 1.0 1.30 101 11 28.3 7.42 8.56 0.37 15 1.01 0.79 26.0 0.33 15.3 19.7 22.0 0.083 0.11 1.9 2.4 72.1 18.0 0.040 0.18 5.6 3.89 2.9 4 90.5 0.64 0.20   1001 < 2.0 142 0.19 83   3 5 3 2.20 70 3045 50 3 227     40236 40246 30505 30551   20270   20264 10044
2018-04-16 17:40
 MDT
 K
 WS
 USGS-WRD
 20.0 5.0 3.0   25 18 2.31 180 0.00001 7.9 7.9 2.0 2.86 72.5   19.9 5.56 8.47 0.43 20 0.94 0.67 18.1 0.34 16.6 30.5 42.2 0.089 0.39 4.0 15.6 960 69.2 0.162 3.23 56.2 4.32 3.6 21 74.4 0.70 0.71   1001 E 8.6 115 0.16 76   3 5 16 2.40 70   50 3 182     40258 40246 30569 30551 30541 20291   20276 10044
2018-05-07 17:45
 MDT
 K
 WS
 USGS-WRD
 24.0 10.0 14.0   133 24 3.10 90 0.00002 7.8 E 7.8 1.2 3.81 36.1   10.3 2.52 4.75 0.34 22 0.69 0.39 6.87 0.27 17.5 29.4 38.5 0.066 0.37 5.7 18.0 1330 124 0.352 5.30 71.3 6.88 3.2 19 39.8 0.94 3.8 0.4 1001 E 14 67 0.09 57   3 5 59 3.90 10 3045 10 2 E 94     40258 40246 30569 30551   20291   20280 10044
2018-05-21 18:10
 MDT
 K
 WS
 USGS-WRD
 24.0 10.0 16.0   131 12 3.11 87 0.00002 7.8 E 7.9 1.3 2.70 35.8   10.5 2.36 3.76 0.27 18 0.63 0.28 5.62 0.28 14.7 22.3 23.3 0.054 0.11 3.8 6.6 261 48.0 0.146 1.41 13.1 3.20 2.8 6 38.6 0.95 3.7 0.3 1001 E 3.9 61 0.08 52   3 5 16 3.50 10 3044 10 2 E 89     40258 40254 30569 30551   20291   20280 10044
2018-06-05 07:55
 MDT
 K
 WS
 USGS-WRD
 22.0 7.5 11.0   145 11 3.50 79 0.00004 7.4 E 7.8 2.5 2.41 34.2   10.1 2.21 2.96 0.22 16 0.42 0.28 4.35 0.29 12.1 15.8 17.2 0.050 0.13 3.3 7.2 469 44.4 0.146 1.63 18.9 3.88 3.1 7 35.5 1.07 4.1 0.5 1001 E 5.4 54 0.07 46   3 5 29 4.00 10 3044 10 2 E 79     40258 40254 30505 30600 30542 20291   20280 10044
2018-07-16 18:15
 MDT
 K
 WS
 USGS-WRD
 22.0 16.0 31.0 1 41 20 2.40 137 0.00001 8.0 8.0 1.2 1.69 60.5   17.3 4.20 5.04 0.28 15 0.71 0.34 8.59 0.31 12.9 30.7 32.4 0.052 0.08 2.4 7.0 169 41.6 0.109 0.60 14.7 6.71 < 2.0 3 61.1 0.73 1.2 0.2 1001 < 2.0 86 0.12 69 40.00 3 5 4 1.85 10 3044 10 2 138     40258 40254 30576 30645 30542 20315   20280 10052
2018-08-13 17:00
 MDT
 K
 WS
 USGS-WRD
 10.0 16.0 27.0   12 10 2.12 190 M  8.3 8.2 0.8 1.45 87.1 3 24.5 6.30 5.61 0.26 12 0.73 0.50 13.7 0.33 13.4 30.1 31.2 0.045 0.06 1.8 2.6 120 61.6 0.104 0.24 7.7 5.22 < 2.0 2 84.5 0.65 0.33   1001 < 2.0 116 0.16 86 170.00 3 5 2 1.10 70   10 2 191 30.00 30 40258 40254 30511 30645 30635 20315 20273 20280 10055

Water Quality Remark Code Description
< Less than
E Estimated
M Presence verified but not quantified