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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 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)

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)

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)

Type
of
repli-
cate,
code
(99105)		 Type
of
sample
related
QA
data,
code
(99111)		 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)


pH 10
Buffer
lot
number
(99171)


pH 7
Buffer
lot
number
(99173)
0.45 um
capsule
filter
NWIS
lot
number
(99206)
2016-10-19 13:20
 MDT
 K
 WS
 USGS-WRD
 135 7.5 10.5 1480 4 2.96 318 M  8.4 8.3 155 41.8 12.3 3.7 4.0 < 0.030 0.03 1.5 3.5 120 7.0 0.020 0.48 19.8 5.36 < 2.0 6 0.90 42 0.9   1.1 1001 82 3 5 6 24 2.00 20 3054 200 2 321     40218 30452 30458 20157 20184 10040
2017-03-22 12:40
 MDT
 K
 WS
 USGS-WRD
 155 5.0 13.0 5490 4 5.08 207 0.00001 8.0 8.0 94.2 25.6 7.36 2.5 3.4 < 0.030 0.08 2.0 10.4 559 87.5 0.144 1.89 49.6 7.94 2.3 15 1.55 155 1.2   1.4 1001 76 3 5 28 415 4.50 20 3054 200 2 206     40218     20237 20184 10036
2017-04-19 10:30
 MDT
 K
 WS
 USGS-WRD
 153 6.5 9.0 5070 4 4.99 209 0.00001 8.2 8.0 95.2 25.6 7.60 1.9 2.4 < 0.030 0.05 1.4 4.4 260 24.2 0.041 0.75 24.5 5.34 < 2.0 7 1.52 144 0.8   1.2 1001 81 3 3 14 192 4.50 20 3054 200 2 207   10 40231     20237 20184 10036
2017-05-10 13:50
 MDT
 K
 WS
 USGS-WRD
 179 10.0 22.0 10900 4 7.42 157 0.00001 8.0 8.0 75.1 20.5 5.82 1.9 3.1 < 0.030 0.08 1.8 9.2 848 38.4 0.093 1.94 62.9 6.80 < 2.0 15 2.26 309 1.6   1.7 1001 76 3 3 65 1910 6.20 20 3054 200 2 159     40231   30522 20237 20184 10036
2017-05-24 11:45
 MDT
 K
 WS
 USGS-WRD
 178 11.0 13.5 10400 4 7.19 170 0.00001 8.1 8.1 79.1 21.6 6.14 2.4 3.5 < 0.030 0.08 2.2 9.8 707 31.6 0.088 1.92 50.6 5.50 < 2.0 19 2.19 295 1.4   2.2 1001 75 3 5 50 1400   20 3054 200 2 171     40224 30512 30522 20237 20184 10036
2017-06-14 13:45
 MDT
 K
 WS
 USGS-WRD
 186 10.5 17.0 15400 4 8.87 173 0.00001 7.9 7.8 78.6 21.6 5.96 7.2 23.7 0.033 1.02 8.0 155 5770 150 0.724 27.8 479 44.6 8.6 259 2.70 436 1.6   2.1 1001 65 3 3 350 14600 6.80 20 3054 200 2 179 30.00 30 40224 30512 30522 20237 20184 10044
2017-07-12 09:30
 MDT
 K
 WS
 USGS-WRD
 140 15.5 19.0 2730 4 3.81 255 0.00001 8.2 8.3 122 33.4 9.34 4.0 4.0 < 0.030 0.03 2.2 4.3 95.2 10.9 0.037 0.33 18.6 6.28 < 2.0 5 1.16 77 1.0   1.3 1001 86 3 4 6 44 3.00 20 3054 200 2 255     40237 30529 30522 20237 20221 10044
2017-08-16 12:25
 MDT
 K
 WS
 USGS-WRD
 200 14.5 27.0 1170 20 2.65 287 M  8.5 8.3 134 35.0 11.4 3.1 3.4 < 0.030 < 0.03 1.5 2.1 70.8 < 10.0 0.036 0.14 12.6 5.62 < 2.0 3 0.81 33   0.3   1001 84 3 5 2 6.3 2.30 10 3044 200 2 286     40237 30529 30522 20237 20210 10044

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