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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 12340500 Clark Fork above Missoula MT

Missoula County, Montana
Hydrologic Unit Code 17010204
Latitude  46°52'36.35", Longitude 113°55'55.63" NAD83
Drainage area 6,021  square miles
Gage datum 3,198.30 feet above NGVD29
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)


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)


Hard-
ness,
water,
mg/L as
CaCO3
(00900)



Calcium
water,
fltrd,
mg/L
(00915)


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



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)


Gage
height
above
datum
meters
(30207)


Dis-
charge,
instan-
taneous
m3/s
(30209)


Transit
rate,
sampler
minimum
ft/s
(50014)



Transit
rate,
sampler
ft/s
(50015)


Transit
rate,
sampler
maximum
ft/s
(50016)



Site
visit
purpose
code
(50280)
Suspnd.
sedimnt
sieve
diametr
percent
<0.0625
mm
(70331)




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


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)
Suspnd
sedimnt
mass
between
63 um &
4 mm,
grams
(91165)


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)
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)
Lot no.
first,
inor-
ganic
grade
water,
number
(99200)

0.45 um
capsule
filter
NWIS
lot
number
(99206)
Julian
date,
in-
bottle
diges-
tion,
ddd
(99870)
2017-10-25 13:15
MDT
K
WS
USGS-WRD
138 6.0 9.0   1520 4 2.77 319 M  8.4 8.3 154 41.5 12.3 3.7 4.4 < 0.030 0.04 1.7 3.2 69.3 < 10.0 0.033 0.31 15.5 4.36 2.0 6 0.84 43 0.9   1.2 1001 86     3 5 4 16   20 3054 200 2 319           40241 30512 30522     20269   20264   10044  
2018-03-28 14:30
MDT
K
WS
USGS-WRD
280 5.0     3230 4 3.70 301 M  8.4 8.1 139 38.2 10.6 3.9 5.6 < 0.030 0.08 3.2 13.0 503 49.6 0.090 1.66 52.0 8.44 < 2.0 16 1.13 91 0.8   1.6 1001 88     3 5 24 209 3.10 20 3044 200 2 305           40246 30505 30551     20270   20264      
2018-04-18 15:15
MDT
K
WS
USGS-WRD
282 6.0 15.0   6530 4 5.27 237 0.00001 8.3 8.1 108 29.1 8.67 2.7 4.4 < 0.030 0.09 2.7 11.7 811 89.6 0.126 1.93 71.9 8.30 2.2 19 1.61 185 0.5   0.8 1001 78     3 5 41 723 4.90 20 3054 200 2 244       10   40246 30569 30551 30541   20291   20276   10044  
2018-05-09 14:10
MDT
K
WS
USGS-WRD
290 10.0 22.0   27800 5 12.45 158 0.00001 7.9 8.0 73.3 20.3 5.50 4.1 9.0 < 0.030 0.28 5.1 47.4 3190 72.8 0.225 8.20 201 14.6 3.6 73 3.79 787 1.0   1.6 1001 65     3 3 257 19300 8.00 20 3054 200 2 168           40246 30569 30551     20291   20280   10044  
2018-05-23 16:10
MDT
K
WS
USGS-WRD
290 11.5 21.0   21900 5 10.80 159 0.00001 8.0 8.0 75.0 20.6 5.70 4.1 6.1 < 0.030 0.12 4.6 19.4 1180 53.1 0.151 3.42 87.7 14.3 3.6 31 3.29 620 0.8   1.2 1001 71     3 3 98 5790 7.50 20 3054 10 2 164           40254 30569 30551     20291   20280   10044  
2018-06-07 08:15
MDT
K
WS
USGS-WRD
281 12.5 11.5   13900 5 8.18 184 0.00001 8.0 8.1 85.5 23.8 6.34 7.2 7.5 0.121 0.14 20.4 20.9 903 31.6 2.99 3.09 78.0 85.0 27.7 30 2.49 394 0.6   1.0 1001 71     3 3 66 2480 7.06 20 3054 10 2 185       30   40254 30576 30600     20291   20280   10044  
2018-07-18 16:00
MDT
K
WS
USGS-WRD
254 18.0 34.0   3800 5 4.01 261 M  8.4 8.2 132 35.2 10.6 5.1 5.7 < 0.030 0.05 2.6 6.7 143 10.2 0.050 0.67 26.8 10.3 < 2.0 7 1.22 108 0.3   0.6 1001 73     3 5 7 72 2.93 20 3054 10 2 263           40254 30576 30645 30635   20315   20280   10052  
2018-08-15 16:10
MDT
K
WS
USGS-WRD
261 17.0 34.0   1790 5 2.83 300 M  8.5 8.4 143 37.9 11.8 4.3 4.5 < 0.030 < 0.03 1.9 2.7 40.1 < 10.0 0.020 0.15 13.3 6.23 < 2.0 3 0.86 51 0.1   0.3 1001 81 40.00   3 5 2 9.7 2.30 10 3044 10 2 295           40254 30511 30645 30635   20315 20273 20280   10055  
2018-10-17 16:15
MDT
K
WS
USGS-WRD
177 7.0 16.0   1930 5 2.90 329 M  8.5 8.4 159 43.0 12.6 4.4 4.7 < 0.030 0.04 1.9 5.0 77.0 < 10.0 0.023 0.46 21.0 5.65 < 2.0 7 0.88 55 0.2   0.3 1001 86 40.00   3 5 3 16 2.35 20 3054 10 2 336 0.0116 0.0016       40267 30576 30645 30635   20291   20280   10055  
2019-03-27 15:15
MDT
K
WS
USGS-WRD
265 3.0 4.0 50 3250 5 3.71 273 0.00001 8.1 8.2 124 34.8 8.95 6.6 18.7 0.048 0.59 11.8 120 3200 69.2 0.254 16.4 320 13.7 8.4 140 1.13 92       1001 86 40.00   3 5 131 1150 3.50 20 3054 200 2 288 0.3472 0.0482     40280 40282 30614 30656     20356   20350   10055  
2019-04-24 17:00
MDT
K
WS
USGS-WRD
275 9.0 16.0   11900 5 7.47 179 0.00001 8.0 8.2 78.7 21.4 6.15 2.9 5.6 0.036 0.13 3.3 18.6 1220 58.2 0.138 3.48 87.8 9.35 3.0 33 2.28 337 0.7   1.2 1001 62 40.00   3 4 72 2320 7.70 20 3054 200 2 184 0.2674 0.1029   10   40282 30614 30656 30635   20356 20316 20350   10055  
2019-05-08 16:15
MDT
K
WS
USGS-WRD
320 11.0 15.0   7860 5 5.88 193 0.00001 8.3 8.3 91.7 25.3 6.95 2.8 4.3 < 0.030 0.07 2.5 10.8 471 31.6 0.071 1.68 43.0 6.70 2.1 18 1.79 222 0.8   1.4 1001 64 40.00   3 5 28 594 5.20 40 3054 200 2 197 0.1145 0.0408     40280 40282 30614   30635   20356   20350 81805 10055  
2019-05-22 16:30
MDT
K
WS
USGS-WRD
265 10.0 16.0   10500 5 7.02 180 0.00001 8.1 8.1 80.8 22.4 6.01 3.4 5.6 < 0.030 0.11 3.5 17.9 728 34.9 0.118 2.78 58.1 9.08 3.4 28 2.14 297 0.6   0.8 1001 69 40.00   3 3 48 1360 6.00 20 3054 200 2 184 0.1698 0.0527       40282 30614 30656 30635   20356 20316 20350   10055  
2019-06-05 16:15
MDT
K
WS
USGS-WRD
277 14.5 24.0   10800 5 7.07 176 0.00001 8.2 8.2 82.8 22.9 6.22 3.5 5.1 < 0.030 0.08 3.3 13.2 536 21.8 0.072 1.85 45.7 8.08 2.3 19 2.15 307 0.8   1.0 1001 72 40.00   3 4 35 1020 7.00 40 3052 200 2 177 0.1495 0.0425 30.00 30   40282 30715 30656 30635   20356 20316 20350   10057  
2019-07-17 16:00
MDT
K
WS
USGS-WRD
255 17.0 25.0   2830 5 3.47 281 M  8.5 8.4 133 35.6 10.7 5.2 5.5 < 0.030 < 0.03 2.3 4.1 121 < 10.0 0.038 0.43 22.5 5.49 < 2.0 5 1.06 80 0.2   0.5 1001 89     3 5 5 38 3.10 20 3054 200 2 283 0.0188 0.0020       40282 30715 30656 30724   20356 20316 20350   10057  
2019-08-21 13:45
MDT
K
WS
USGS-WRD
300 20.0 33.0   1350 10 2.50 309 M  8.6 8.4 144 38.5 11.5 4.6 4.9 < 0.030 0.03 1.8 3.6 53.4 < 10.0 0.024 0.25 17.0 5.67 < 2.0 4 0.76 38   0.4   1001 97     3 5 2 7.3 2.10 10 3044 200 2 312 0.0032 0.0001       40295 30715 30656 30724   20356 20316 20350   10062  
2019-10-10 14:15
MDT
K
WS
USGS-WRD
200 5.0 5.0   1920 6 2.90 323 M  8.4 8.3 153 41.4 12.0 3.7 4.7 < 0.030 0.03 2.5 4.6 108 < 10.0 0.026 0.64 23.7 5.21 2.3 8 0.88 54   0.4   1001 92     3 5 4 21 2.40 10 3044 200 2 331 0.0109 0.0009       40295 30715 30656 30724   20356   20350   10062  
2020-03-26 11:05
MDT
K
WS
USGS-WRD
283 4.0 6.5     5   310 0.00001 8.2 8.2 146 39.5 11.6 3.3 3.8 0.031 0.05 1.7 4.4 147 12.2 0.039 0.72 27.8 6.37 < 2.0 7     0.4   0.4 1001 88     3 5 7     20 3044 200 2 325 0.0332 0.0039       40299 30763 30713 30724   20356   20350   10062  
2020-04-15 10:00
MDT
K
WS
USGS-WRD
310 4.8 2.0     5   257 0.00001 8.1 8.2 114 31.3 8.78 2.4 3.3 < 0.030 0.06 2.2 7.7 328 39.5 0.067 1.30 51.8 5.55 2.3 11     0.2   0.3 1001 87     3 5 19     20 3054 200 2 262 0.0833 0.0107   10   40299 30763 30713 30724   20356 20353 20350   10062  
2020-05-07 10:00
MDT
K
WS
USGS-WRD
255 7.2 8.5     5   170 0.00001 7.9 8.2 77.0 21.2 5.87 2.0 2.8 < 0.030 0.06 1.6 9.6 507 33.5 0.084 1.59 49.7 3.88 < 2.0 15     0.5   0.6 1001 76     3 5 34     20 3044 200 2 174 0.1413 0.0346       40311 30763 30811 30724   20419   20350   10062  
2020-05-20 10:00
MDT
K
WS
USGS-WRD
290 9.6 12.0     5   148 0.00001 7.8 8.0 67.0 18.2 5.23 2.1 6.2 < 0.030 0.28 2.8 43.0 2050 53.6 0.151 7.38 178 12.4 3.6 76     0.6   0.9 1001 56     3 3 191     20 3054 200 2 155 0.8224 0.3585       40311 30763 30811 30831   20419   20350   10063 20201000
2020-06-03 09:55
MDT
K
WS
USGS-WRD
288 12.1 20.0     5   165 0.00001 8.0 8.1 81.0 22.4 6.08 3.1 4.4 < 0.030 0.09 2.8 15.5 794 29.7 0.093 2.36 58.6 6.89 2.5 23     0.9   2.0 1001 72     3 5 50     20 3054 200 2 167 0.2166 0.0597 30.00 30   40311 30763 30811 30831   20419 20353 20350   10063 20201000
2020-07-15 09:40
MDT
K
WS
USGS-WRD
207 14.4 19.0     5   249 0.00001 8.1 8.3 115 31.7 8.80 4.2 4.9 0.031 0.05 2.9 7.2 176 < 10.0 0.052 0.78 24.2 9.83 2.4 9     0.3   0.6 1001 77     3 5 8     20 3044 200 2 250 0.0332 0.0075       40311 30763 30811 30831   20419   20350   10063 20201000
2020-08-19 09:55
MDT
K
WS
USGS-WRD
245 17.1 20.0     16   298 0.00001 8.1 8.2 144 38.2 11.9 3.9 4.4 < 0.030 0.03 2.0 3.6 71.1 < 10.0 0.021 0.32 22.6 7.85 < 2.0 6       0.2   1001 82     3 5 4     10 3044 200 2 301 0.0180 0.0032       40311 30763 30811 30831   20419   20350   10063 20201000
2020-10-15 09:45
MDT
K
WS
USGS-WRD
285 6.9 6.0     8   328 0.00001 7.9 8.2 141 38.2 11.0 3.3 4.1 < 0.030 0.06 1.6 7.3 221 7.3 0.039 1.19 43.8 7.76 2.4 14       0.4   1001 85     3 5 12     10 3045 200 2 314 0.0413 0.0060       40322 30763 30811 30831   20419   20398   10063 20201000
2021-03-24 10:15
MDT
K
WS
USGS-WRD
267 4.0 6.5     4   304 0.00001 8.0 8.2 149 40.4 11.7 5.0 5.1 0.067 0.09 9.8 10.4 447 408 1.67 1.81 53.0 59.2 17.3 18     0.3   0.5 1001 88     3 5 21     20 3052 200 2 307 0.0640 0.0074       40327 30862 30870 30861   20451   20398   10063 20210000
2021-04-14 09:50
MDT
K
WS
USGS-WRD
268 3.9 3.5     4   241 0.00001 8.1 8.2 107 29.4 8.11 2.0 2.6 < 0.030 0.04 1.5 5.0 232 26.5 0.051 0.87 27.8 7.99 2.3 8     0.4   0.5 1001 81     3 5 11     20 3054 200 2 245 0.0353 0.0066   10   40327 30862 30870 30861   20480 20404 20422   10063 20211000
2021-05-06 10:30
MDT
K
WS
USGS-WRD
271 9.1 17.5     4   179 0.00001 8.1 8.2 80.0 22.2 6.00 1.8 2.6 < 0.030 0.06 1.6 7.4 482 29.5 0.061 1.38 48.2 4.79 < 2.0 13     0.6   0.9 1001 73     3 5 31     20 3044 200 2 181 0.1161 0.0315       40332 30914 30870 30922   20480   20529   10067 20211000
2021-05-19 10:00
MDT
K
WS
USGS-WRD
277 9.1 11.0     4   149 0.00002 7.8 8.2 69.1 18.8 5.37 1.6 2.4 < 0.030 0.06 1.5 8.1 596 29.0 0.056 1.47 53.0 4.15 < 2.0 12     0.7   0.9 1001 70     3 5 50     20 3054 200 2 153 0.1852 0.0548       40332 30862 30870 30922   20480   20529   10067 20211000
2021-06-09 10:00
MDT
K
WS
USGS-WRD
275 12.5 20.0     4   175 0.00001 8.1 8.2 77.5 21.0 6.07 2.1 2.9 < 0.030 0.05 1.9 8.5 417 18.1 0.052 1.34 37.1 4.96 < 2.0 12     0.5   0.9 1001 83     3 4 29     20 3054 200 2 177 0.0931 0.0162 30.00 30   40332 30914 30870 30922   20480 20468 20529   10067 20211000
2021-07-14 09:45
MDT
K
WS
USGS-WRD
263 17.3 21.5     4   260 0.00001 8.2 8.3 133 34.4 11.3 2.9 2.9 < 0.030 < 0.03 1.5 2.2 46.9 8.4 0.029 0.15 10.7 4.27 < 2.0 2       0.3   1001 85     3 5 2     10 3044 200 2 260 0.0084 0.0013       40332 30914 30870 30922   20480   20529     20211000
2021-08-18 09:45
MDT
K
WS
USGS-WRD
232 14.8 13.0 2   12   297 0.00001 8.1 8.3 152 39.7 12.9 3.2 3.6 < 0.030 < 0.03 1.4 2.8 98.1 8.4 0.024 0.30 22.2 6.98 < 2.0 6       0.4   1001   10.00 200.0 3 5       10 3044 200 2 300         40336 40332 30926 30870 30922 30857 20480 20468 20529 81818 10071 20211000
2021-10-14 08:15
MST
K
WS
USGS-WRD
242 5.4 3.0 2 1440 12 2.62 326 0.00001 8.2                                     0.80 41   0.6   1001 91   300.0 3 5 5 19   10 3044 200 2   0.0191 0.0018       40339 30926 30840 30939   20480       10071  

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