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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.


To view additional data-quality attributes, output the results using these options: one result per row, expanded attributes.
Additional precautions are here.

USGS 12323720 Willow Creek at Opportunity, MT

Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'25.79", Longitude 112°48'38.20" NAD83
Drainage area 28.6  square miles
Gage datum 4,930 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)

Baro-
metric
pres-
sure,
mm Hg
(00025)



Weather
WMO
code
(00041)



Dis-
charge,
ft3/s
(00060)

Instan-
taneous
dis-
charge,
ft3/s
(00061)
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)		 Carbon-
ate,
wat flt
infl pt
titr.,
field,
mg/L
(00452)		 Bicar-
bonate,
wat flt
infl pt
titr.,
field,
mg/L
(00453)

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

Hard-
ness,
water,
mg/L as
CaCO3
(00900)		 Noncarb
hard-
ness,
wat flt
field,
mg/L as
CaCO3
(00904)		 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)

Dis-
charge,
instan-
taneous
m3/s
(30209)		 Alka-
linity,
wat flt
inf tit
field,
mg/L as
CaCO3
(39086)


Transit
rate,
sampler
ft/s
(50015)


Site
visit
purpose
code
(50280)		 Turbdty
white
light,
det ang
90+/-30
corrctd
NTRU
(63676)		 Turbid-
ity,
IR LED
light,
det ang
90 deg,
FNU
(63680)		 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)		 Hydrox-
ide,
wat flt
infl pt
titr.,
field,
mg/L
(71834)



Sample
purpose
code
(71999)		 Sample
loc-
ation,
distanc
down
stream,
feet
(72104)		 Sample
loc-
ation,
distanc
up-
stream,
feet
(72105)

Sampler
nozzle
mater-
ial,
code
(72219)

Sampler
nozzle
di-
ameter,
code
(72220)		 Sus-
pended
sedi-
ment
concen-
tration
mg/L
(80154)		 Sus-
pended
sedi-
ment
dis-
charge,
ton/d
(80155)		 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)

Sus-
pended
sedimnt
mass,
grams
(91157)
Sus-
pended
sedimnt
mass
<63 um,
grams
(91158)
Sus-
pended
sedimnt
mass
>63 um,
grams
(91159)		 Suspnd
sedimnt
mass
between
63 um &
4 mm,
grams
(91165)		 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)		 1000
uS/cm
KCl
conduct
stand-
ard lot
number
(99165)


pH 10
Buffer
lot
number
(99171)


pH 4
Buffer
lot
number
(99172)


pH 7
Buffer
lot
number
(99173)
0.16 N
Sulfur-
ic acid
titrant
lot
number
(99174)		 1800
uS/cm
KCl
conduct
stand-
ard lot
number
(99177)		 Lot no.
first,
inor-
ganic
grade
water,
number
(99200)
0.45 um
capsule
filter
NWIS
lot
number
(99206)		 NWIS
lot
number,
disk
filter,
0.45 um
number
(99218)		 Julian
date,
in-
bottle
diges-
tion,
ddd
(99870)
2019-10-07 12:50
 MDT
 K
 WS
 USGS-WRD
 11.0 15.0 15.0     8.0   1 4.12 307 M  8.5 8.3 0.7     3.01 141   11 41.2 9.21 12.6 0.46 16 1.64 4.02 28.7 0.45 22.8 26.0 26.7 < 0.030 0.03 1.9 3.0 78.3 < 10.0 0.043 0.44 22.1 16.3 < 2.0 2 130 1.26 0.23       1001 < 2.0   199 0.27 96   10.00     3 5 1   0.70 70 3070 10 2 317 0.0024     0.0001 40 40286 40295 30715 30656 30724   20356 20316 20350       10062    
2020-03-24 13:35
 MDT
 K
 WS
 USGS-WRD
 16.0 5.2 3.0     7.0   32 3.97 301 0.00001 8.0 8.2 2.2     1.96 127   2 37.5 8.08 11.3 0.44 16 1.50 3.80 30.3 0.33 21.0 17.0 19.5 < 0.030 0.04 1.4 2.7 192 47.9 0.136 0.62 119 93.5 2.7 5 124 1.21 0.20     0.2 1001 < 2.0   189 0.26 93   10.00     2 5 2     10 3044 10 2 304 0.0061     0.0004   40286 40299 30715 30713 30724   20356   20350       10062    
2020-04-13 12:20
 MDT
 K
 WS
 USGS-WRD
 11.0 5.8 -4.0     7.0   22 3.96 315 0.00001 8.0 8.2 2.3     3.03 137   10 40.0 9.06 13.4 0.50 17 1.78 4.49 32.0 0.35 23.7 18.7 21.1 0.050 0.08 2.6 5.9 356 57.2 0.124 1.65 144 113 3.3 9 127 1.21 0.20     0.1 1001 E 3.5   201 0.27 92   10.00     3 5 9     10 3044 10 2 318 0.0206     0.0017   40308 40299 30763 30713 30724   20356   20350       10062    
2020-05-05 12:40
 MDT
 K
 WS
 USGS-WRD
 14.0 9.3 17.0     15   14 4.15 160 0.00002 7.8 8.1 2.0     5.20 65.1     19.8 3.81 7.37 0.40 19 1.24 1.62 14.4 0.16 24.2 26.0 25.0 < 0.030 0.10 4.4 9.3 638 133 0.368 2.06 94.4 49.6 3.1 10 65.2 1.26 0.43     0.1 1001 E 11   112 0.15 92   10.00     3 5 13     10 3044 200 2 162 0.0237     0.0018 40 40308 40311 30763 30811 30724   20419   20350       10062    
2020-05-18 11:50
 MDT
 K
 WS
 USGS-WRD
 14.0 10.5 15.0     21   12 4.20 178 0.00002 7.8 7.9 2.3     5.58 75.3   0.0 22.8 4.47 8.27 0.41 19 1.59 1.95 14.2 0.18 24.6 29.2 31.0 0.034 0.12 4.4 10.4 554 117 0.294 2.14 106 57.4 2.8 11 74.9 1.28 0.61     0.2 1001 E 7.7   123 0.17 94   10.00     3 5 15     10 3044 10   182 0.0362     0.0022   40308 40311 30763 30811 30724   20419   20350       10063   20201000
2020-06-01 11:20
 MDT
 K
 WS
 USGS-WRD
 16.0 12.1 18.0     20   32 4.24 170 0.00001 7.9 8.0 1.8     4.23 75.2   2 23.1 4.26 7.03 0.35 17 1.28 1.45 12.6 0.19 23.9 29.4 32.1 < 0.030 0.09 2.8 8.0 430 85.3 0.227 1.84 83.0 44.0 2.2 9 73.1 1.29 0.56     0.2 1001 E 5.3   118 0.16 95   10.00     3 5 11     10 3044 10 2 172 0.0206     0.0010   40308 40311 30763 30811 30831   20419   20350       10063   20201000
2020-07-13 12:15
 MDT
 K
 WS
 USGS-WRD
 12.0 13.6 19.0     19   10 4.54 253 0.00001 8.1 8.3 1.9     5.35 113     33.6 7.16 8.38 0.34 14 1.07 1.73 11.7 0.38 24.7 53.1 58.0 < 0.030 0.04 6.4 4.5 209 65.0 0.143 0.56 38.1 25.5 2.5 5 122 1.38 0.54     0.1 1001 E 2.0   162 0.22 95   10.00     3 5 3     10 3044 10 2 253 0.0040     0.0002   40312 40311 30763 30811 30831   20419   20350       10063   20201000
2020-08-17 12:20
 MDT
 K
 WS
 USGS-WRD
 12.0 15.2 35.0     11   10 4.43 274 M  8.6 8.5 0.6     1.95 129   12 37.7 8.37 9.56 0.37 14 1.36 2.37 21.4 0.40 21.8 17.4 17.7 < 0.030 < 0.03 1.8 2.9 68.5 13.4 0.054 0.29 6.9 3.34 < 2.0 < 2 117 1.35 0.32     0.1 1001 < 2.0   173 0.24 93   10.00     3 5 1     10 3044 10 2 273 0.0014     0.0001   40312 40311 30763 30811   30857 20419   20350       10063   20201000
2020-10-13 12:45
 MDT
 K
 WS
 USGS-WRD
 16.0 7.4 9.5     5.3   32 4.23 295 0.00001 8.2 8.2 1.5     1.80 121   3 35.5 7.90 9.85 0.39 15 1.36 2.52 23.2 0.39 21.3 12.7 12.2 < 0.030 < 0.03 1.2 1.9 55.7 12.6 0.064 0.38 13.9 11.3 < 2.0 2 118 1.29 0.15     0.1 1001 < 2.0   173 0.23 93   10.00     3 5 1     10 3045 10 2 273 0.0014     0.0001 40 40312 40311 30763 30811   30857 20419 20379 20398       10063   20201000
2021-03-22 12:50
 MDT
 K
 WS
 USGS-WRD
 18.0 4.4 4.5     5.3   36 3.89 312 0.00001 8.1 8.2 1.7     3.11 141   16 40.0 10.0 12.5 0.46 16 1.90 3.87 33.4 0.38 22.9 20.7 22.6 < 0.030 0.04 3.3 5.2 225 121 0.196 0.58 107 99.5 4.2 6 125 1.19 0.15       1001 E 5.0   200 0.27 90   10.00     3 5 2     10 3044 10 2 311 0.0042     0.0004   40325 40327 30862 30870   30857 20451   20398       10063   20210000
2021-04-12 12:15
 MDT
 K
 WS
 USGS-WRD
 16.0 3.2 0.5     6.5   30 3.91 274 0.00001 8.0 8.5 2.2     2.51 119   9 35.1 7.66 11.3 0.45 17 1.41 3.02 28.9 0.30 23.5 13.6 14.4 0.034 0.04 1.7 3.1 186 43.3 0.102 0.60 75.4 68.3 2.9 4 110 1.19 0.18     0.1 1001 E 2.1   177 0.24 91   10.00     3 5 3     10 3044 10 2 279 0.0058     0.0005   40325 40327 30862 30870   30857 20480   20422       10063   20211000
2021-05-04 12:50
 MDT
 K
 WS
 USGS-WRD
 18.0 9.0 11.0     12   36 4.02 199 0.00001 8.0 8.1 1.4     4.52 83.2   4 25.1 4.98 8.84 0.42 18 1.40 2.11 19.6 0.22 23.3 21.3 22.9 < 0.030 0.07 3.3 6.4 368 64.8 0.193 1.27 80.9 53.4 2.3 6 79.1 1.23 0.33     0.1 1001 E 6.0   133 0.18 99   10.00     3 5 7     10 3044 10 2 200 0.0111     0.0001   40325 40327 30862 30870   30857 20480   20422       10067   20211000
2021-05-17 12:30
 MDT
 K
 WS
 USGS-WRD
 17.0 14.5 25.0     10   34 3.98 213 0.00001 8.1 8.2 1.5     3.84 90.3   3 26.9 5.62 8.77 0.40 17 1.33 2.12 19.7 0.27 22.7 22.5 23.1 < 0.030 0.05 2.8 5.1 265 57.0 0.188 1.13 81.5 59.1 < 2.0 5 87.6 1.21 0.29     0.1 1001 E 3.9   140 0.19 94   10.00     3 5 5     10 3044 10 2 215 0.0085     0.0005   40325 40332 30862 30870   30857 20480   20422       10067   20211000
2021-06-07 12:15
 MDT
 K
 WS
 USGS-WRD
 20.0 11.8 17.0     17   27 4.13 201 0.00001 8.0 8.2 1.7     5.03 84.9     24.9 5.48 7.70 0.36 16 1.37 1.27 < 0.02 0.31 22.7 41.6 43.7 0.037 0.07 4.1 7.1 268 91.5 0.336 1.51 63.0 42.9 3.1 7 93.0 1.26 0.47     0.1 1001 E 4.2   < 120 < 0.16 95   10.00     3 5 7     10 3044 10 2 202 0.0108     0.0005   40325 40332 30914 30870   30857 20480   20529       10067   20211000
2021-07-12 12:15
 MDT
 K
 WS
 USGS-WRD
 33.0 17.0 26.0     5.2   25 3.95 269 M  8.5 8.3 0.8     1.99 117     34.7 7.31 8.83 0.36 14 1.14 1.93 20.2 0.46 21.1 23.3 24.3 < 0.030 < 0.03 1.9 2.9 100 17.9 0.128 0.55 22.4 14.7 < 2.0 < 2 120 1.20 0.15       1001 < 2.0   168 0.23 95   10.00     3 5 1     70 3044 10 2 269 0.0020     0.0001   40336 40332 30914   30922 30857 20480   20529       10067   20211000
2021-08-16 12:15
 MDT
 K
 WS
 USGS-WRD
 12.0 17.5 30.0   1 4.4   12 3.99 273 M  8.6 8.4 0.7       124   2 36.0 8.31 9.10 0.36 14 1.27 2.02 20.5 0.46 20.0 14.5 15.3 < 0.030 < 0.03 1.3 2.4 106 15.3 0.079 0.53 25.7 14.9 < 2.0 2 122 1.22 0.12     0.1 1001 < 2.0   171 0.23     10.00 200.0   3 5       10 3044 10 2 274           40336 40332 30926 30870 30922 30857 20480 20468 20529     81818 10067   20211000
2021-10-12 12:45
 MST
 K
 WS
 USGS-WRD
 17.0 3.2 1.0   2 4.8   17 3.93 276 0.00001 8.3 8.2 1.2     1.59 124   4 35.8 8.35 10.3 0.40 15 1.47 2.44 24.0 0.41 23.1 10.8 11.9 < 0.030 0.05 0.91 3.8 187 13.8 0.066 1.30 53.4 37.5 < 2.0 6 120 1.20 0.14     0.0 1001 E 2.9   178 0.24 97   10.00   250.0 3 5 6     10 3044 10 2 284 0.0096     0.0003 40 40336 40339 30926   30922 30857 20480 20468 20529       10067   20211000
2022-03-22 14:15
 MDT
 K
 WS
 USGS-WRD
 22.5 11.3 7.5     6.1   10 3.85 300 0.00001 8.2 8.3 1.6     1.89 133   11 38.6 8.89 11.6 0.44 16 1.58 2.86 28.7 0.41 21.1 16.9 18.5 < 0.030 < 0.03 2.0 2.9 92.3 18.8 0.071 0.38 28.7 27.3 < 2.0 3 122 1.17 0.17     0.0 1001 < 2.0   187 0.25 92   10.00 400.0   3 5 1     10 3044 30 2 305 0.0025     0.0002 1 40340 40339 30938   30939   20564   20489   31010   10072   20220000
2022-04-18 12:45
 MDT
 K
 WS
 USGS-WRD
 18.0 7.2 11.0   2 6.5   17 3.86 304 0.00001 8.2         2.54                                                         1.18 0.18     0.1 1001 < 2.0       97   10.00 500.0   3 5 2     10 3044 30 2   0.0039     0.0001 1 40340 40354 30938   30939   20564   20489   31010   10072    
2022-05-03 13:45
 MDT
 K
 WS
 USGS-WRD
 24.8 13.8 14.0   2 7.6   12 3.90 271 0.00001 8.3         3.47                                                         1.19 0.22     0.0 1001 < 2.0       88   10.00 500.0   3 5 5     10 3044 30 2   0.0082     0.0010 1 40340 40354 30938   30939   20564   20489   31010   10075    
2022-05-24 13:30
 MDT
 K
 WS
 USGS-WRD
 10.0 12.8 12.5   1 13   10 4.03 222 0.00001 8.0         4.75                                                         1.23 0.36     0.1 1001 E 4.0       89   10.00 400.0   3 5 5     10 3044 30 2   0.0080     0.0009   40360 40354 30938   30939   20564   20489   31010   10075    
2022-06-07 12:45
 MDT
 K
 WS
 USGS-WRD
 12.0 14.7 16.5   1 25   15 4.28 261 0.00001 8.0         8.21                                                         1.30 0.70     0.2 1001 E 3.9       89   10.00   10.0 3 5 7     10 3044 30 2   0.0104     0.0011   40360 40357 30978   30939   20564   20489   31010   10075    
2022-07-12 14:10
 MDT
 K
 WS
 USGS-WRD
 17.0 22.0 32.0   0.0 11   15 4.17 290 M  8.4         4.29                                                         1.27 0.31     0.3 1001 < 2.0       89   10.00 200.0   3 5 2     10 3044 30 2   0.0053     0.0006   40363 40357 30978   30939   20582   20489   31010   10075    
2022-08-16 14:45
 MDT
 K
 WS
 USGS-WRD
 18.0 18.4         5.2 10 4.11 274 M  8.4         2.44                                                         1.25   0.15     1001 < 2.0       95   10.00 30.0   3 5 3 0.04   10 3044 20 2   0.0041     0.0002 30 40325 40357                     10075    
2022-10-04 13:00
 MDT
 K
 WS
 USGS-WRD
 24.5 12.7 20.0   0.0 5.0   10 4.01 1960 0.00001 8.3         2.52                                                         1.22 0.14       1001 E 5.3       91   10.00   300.0 3 5 6     10 3044 20 2   0.0095 0.0086 0.0009   1 40363 40368                     10075    
2023-03-21 13:45
 MDT
 K
 WS
 USGS-WRD
 22.6 7.0   631 1 3.8   3 3.79 319 0.00001 8.2 8.1 1.6 0.9 159 3.37 140 8   39.4 10.0 12.5 0.46 16 3.35 3.71 30.0 0.43 20.9 20.7 22.0 0.030 0.04 3.2 4.5 93.6 55.0 0.154 0.35 67.7 63.9 3.7 4   1.16 0.11   132   1001 < 2.0 1.3 200 0.27 31 M  10.00 200.0       1     40 3071   2 325 0.0035 0.0011 0.0024   100 40381 40382               20587       10078 20230000
2023-04-11 11:15
 MDT
 K
 WS
 USGS-WRD
 10.0 7.6   630 1 7.1   5 3.88 337 0.00001 7.9 8.2 3.4 0.6 165 6.92 149 12   40.0 11.8 15.0 0.54 17 5.18 3.98 30.8 0.60 20.1 85.6 82.7 0.066 0.09 9.9 13.3 211 133 0.354 0.70 146 129 6.5 8   1.18 0.20   136   1001 < 2.0 3.3 210 0.28   M  10.00 300.0             40 3070   2 344         1 40375 40368               20621     10079   20230000
2023-05-09 12:15
 MDT
 K
 WS
 USGS-WRD
 15.0 8.1   635 2 18     4.15 200 0.00002 7.7   2.8 0.2 94.1 8.15                                                         1.26 0.52   77.5   1001 8.7 7.7       M  10.00 50.0             40 3071   2           1 40375 40368               20643     10079    

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