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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 12340000 Blackfoot River near Bonner MT

Missoula County, Montana
Hydrologic Unit Code 17010203
Latitude  46°53'57.88", Longitude 113°45'22.75" NAD83
Drainage area 2,287  square miles
Gage datum 3,344.76 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)


Temper-
ature,
air,
deg F
(00021)

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)

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,
m3/s
(30208)

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)		 Turbid-
ity,
IR LED
light,
det ang
90 deg,
FNU
(63680)		 Suspnd.
sedimnt
sieve
diametr
percent
<0.0625
mm
(70331)



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)		 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)
2019-10-10 13:10
 MDT
 K
 WS
 USGS-WRD
 125 5.0 7.0         672 8 2.28 274 M  8.4 8.3 138 34.9 12.5 1.1 1.2 < 0.030 < 0.03 < 0.40 < 0.4 38.6 < 10.0 < 0.020 < 0.06 3.7 1.39 < 2.0 < 2 0.69   19   0.4   1001   95       3 5 1 1.8 2.50 10 3044 200 2 281 0.0037     0.0002     40295 30715 30656 30724   20356   20350   10062    
2020-04-15 12:00
 MDT
 K
 WS
 USGS-WRD
 175 4.8 5.0         1730 5   195 0.00001 8.2 8.2 92.8 24.0 7.99 0.77 1.0 < 0.030 < 0.03 0.52 0.9 250 48.3 0.046 0.29 29.4 3.60 < 2.0 < 2     49 0.4   0.5 1001   85       3 5 15 70   20 3054 200 2 200 0.0623     0.0094     40299 30763 30713 30724   20356 20353 20350   10062    
2020-05-20 12:00
 MDT
 K
 WS
 USGS-WRD
 190 9.1 13.5         9160 5   153 0.00001 8.0 8.1 74.6 19.5 6.30 0.81 1.6 < 0.030 < 0.03 0.93 4.1 1330 38.2 0.044 1.46 79.0 4.55 < 2.0 7     259 0.6   0.8 1001   75       3 3 116 2870   20 3054 200 2 160 0.4988     0.1264     40311 30763 30811 30831   20419   20350   10063   20201000
2020-06-03 11:45
 MDT
 K
 WS
 USGS-WRD
 193 12.4 20.0         8030 5   159 0.00001 8.2 8.2 78.7 21.2 6.25 0.82 1.3 < 0.030 < 0.03 0.77 1.8 490 20.7 0.026 0.54 29.4 3.32 < 2.0 3     227 0.8   1.1 1001   80       3 4 36 781   20 3054 200 2 162 0.1709     0.0347     40311 30763 30811 30831   20419 20353 20350   10063   20201000
2020-07-15 11:15
 MDT
 K
 WS
 USGS-WRD
 157 16.5 22.0         1760 5   232 M  8.3 8.3 117 29.7 10.3 1.1 1.2 < 0.030 < 0.03 0.66 0.7 76.1 < 10.0 < 0.020 0.10 8.5 2.67 < 2.0 < 2     50 0.4   0.6 1001   88       3 5 3 14   20 3044 200 2 234 0.0133     0.0016     40311 30763 30811 30831   20419   20350   10063   20201000
2020-08-19 11:00
 MDT
 K
 WS
 USGS-WRD
 150 17.0 21.0         769 15   267 M  8.3 8.3 137 34.2 12.6 1.2 1.4 < 0.030 < 0.03 0.60 0.6 37.0 < 10.0 < 0.020 < 0.06 8.3 4.51 < 2.0 < 2     22   0.2   1001   80       3 5 2 4.2   10 3044 200 2 273 0.0080     0.0016     40311 30763 30811 30831   20419   20350   10063   20201000
2020-10-15 10:45
 MDT
 K
 WS
 USGS-WRD
 177 6.2 8.0           9   289 0.00001 8.2 8.2 132 33.2 11.9 1.1 1.1 < 0.030 < 0.03 0.54 0.7 48.6 5.5 < 0.020 0.07 6.2 4.68 < 2.0 < 2         0.2   1001   85       3 5 2     10 3045 200 2 274 0.0068     0.0010     40322 30763 30811 30831   20419   20398   10063   20201000
2021-04-14 11:10
 MDT
 K
 WS
 USGS-WRD
 153 4.0 3.5           4   185 0.00001 8.2 8.3 88.6 22.8 7.68 0.75 0.8 < 0.030 < 0.03 0.99 0.9 152 35.5 0.027 0.14 13.0 5.50 < 2.0 < 2       0.5   0.7 1001   90       3 5 6     20 3054 200 2 188 0.0205     0.0021     40327 30862 30870 30861   20480 20404 20422   10063   20211000
2021-05-19 11:30
 MDT
 K
 WS
 USGS-WRD
 183 9.0 10.0           4   149 0.00001 8.0 8.2 73.1 19.4 5.99 0.71 1.1 < 0.030 < 0.03 0.67 2.0 510 17.8 0.022 0.59 42.3 2.15 < 2.0 3       0.8   1.0 1001   80       3 4 42     20 3054 200 2 154 0.1420     0.0285     40332 30862 30870 30922   20480   20529   10067   20211000
2021-06-09 11:45
 MDT
 K
 WS
 USGS-WRD
 175 12.2 16.5           4   170 0.00001 8.3 8.2 78.1 20.7 6.40 0.80 1.1 < 0.030 < 0.03 0.71 1.6 359 41.2 0.059 0.42 23.8 4.73 < 2.0 < 2       0.5   0.9 1001   88       3 4 27     20 3054 200 2 173 0.0836     0.0104     40332 30914 30870 30922   20480 20468 20529   10067   20211000
2021-07-14 10:45
 MDT
 K
 WS
 USGS-WRD
 160 17.3 20.5           4   245 M  8.4   131 33.0 11.9 1.2 1.2 < 0.030 < 0.03 < 0.40 0.9 40.2 7.7 < 0.020 0.08 5.4 1.78 < 2.0 < 2         0.3   1001   87       3 5 2     10 3044 200 2   0.0068     0.0009     40332 30914 30870 30922   20480   20529       20211000
2021-08-18 10:30
 MDT
 K
 WS
 USGS-WRD
 138 14.9 12.5           12   265 0.00001 8.2 8.4 145 36.0 13.4 1.3 1.3 < 0.030 < 0.03 0.46 0.5 75.1 8.5 < 0.020 0.12 8.9 2.17 < 2.0 < 2         0.4   1001     10.00 600.0   3 5       10 3044 200 2 273           40336 40332 30926 30870 30922 30857 20480 20468 20529 81818 10071   20211000
2021-10-14 09:30
 MST
 K
 WS
 USGS-WRD
 140 4.3 2.0     2 549   9 2.08 267 M  8.4 8.3 146 36.1 13.6 1.1 1.1 < 0.030 < 0.03 < 0.40 0.4 50.3 7.2 < 0.020 < 0.06 3.9 1.17 < 2.0 < 2 0.63 16     0.2   1001   90 10.00 500.0   3 5 1     10 3044 200 2 290 0.0048     0.0005     40339 30926 30840 30939   20480       10071   20211000
2022-04-20 11:30
 MDT
 K
 WS
 USGS-WRD
 152 7.1 5.5     1 1320   4 3.00 196 M  8.4 8.2 109 27.1 10.0 0.76 0.9 < 0.030 < 0.03 < 0.40 0.6 82.7 10.9 < 0.020 0.13 8.5 3.78 < 2.0 < 2 0.91 37   0.2   0.6 1001   96 10.00 300.0   3 5 2     20 3052 200 2 206 0.0048     0.0002 1   40354 30938 30940   30878 20564 20468 20489 81822 10071   20221000
2022-05-26 10:00
 MDT
 K
 WS
 USGS-WRD
 165 12.5 17.0     1 3330   5 4.63 169 0.00001 8.2 8.2 83.1 21.8 6.99 0.65 0.8 < 0.030 < 0.03 1.2 0.9 159 9.5 < 0.020 0.20 14.1 2.04 < 2.0 < 2 1.41 94   0.9   1.6 1001   86 10.00 300.0   3 5 10     20 3044 200 2 170 0.0325     0.0044     40357 30978 30940   30929 20564   20489   10075   20221000
2022-06-09 09:45
 MDT
 K
 WS
 USGS-WRD
 178 12.5 19.0     1 5430   5 5.82 159 0.00001 8.1 8.3 79.8 21.0 6.62 0.66 1.1 < 0.030 < 0.03 0.70 1.7 415 12.2 < 0.020 0.45 23.0 1.75 < 2.0 3 1.77 154   0.7   1.7 1001   82 10.00 300.0   3 5 28     20 3044 200 2 162 0.1042     0.0183     40357 30978 30940   30929 20564   20489   10075   20221000
2022-07-14 11:10
 MDT
 K
 WS
 USGS-WRD
 155 17.8 19.0       1870   5 3.60 216 0.00001 8.2 8.3 116 29.7 10.2 1.1 1.2 < 0.030 < 0.03 < 0.40 0.7 145 11.5 < 0.020 0.19 11.1 2.01 < 2.0 < 2 1.10 53   0.4   1.0 1001   92 10.00 300.0   3 5 8     10 3044 200 2 214 0.0288     0.0023     40357 30978 30940   30929 20582   20489     10074 20221000
2022-08-18 11:15
 MDT
 K
 WS
 USGS-WRD
 145 17.2         638     2.20 256 M  8.3 8.4 134 33.0 12.7 1.2 1.2 < 0.030 < 0.03 < 0.40 0.6 35.0 6.1 < 0.020 < 0.06 6.2 2.21 < 2.0 < 2 0.67 18         1001   84 10.00 100.0   3 5 2     20 3044 10 2 251 0.0080     0.0013 1   40368                 10074   20221000
2022-10-06 09:45
 MDT
 K
 WS
 USGS-WRD
 145 9.7 5.5     0.0 603     6.49   0.00001 8.2 8.4 150 37.5 13.7 1.4 1.3 < 0.030 < 0.03 < 0.40 0.4 51.9 8.5 < 0.020 0.06 7.0 1.54 < 2.0 < 2 1.98 17         1001   85 10.00 50.0   3 5 4     20 3044 10 2 285 0.0136 0.0115 0.0021   1   40368                 10074   20221000
2023-03-23 10:30
 MDT
 K
 WS
 USGS-WRD
 140 0.5     672 0.0 458     1.84 256 0.00001 8.3 8.2 131 33.2 11.6 1.1 1.2 < 0.030 < 0.03 0.50 0.7 90.0 14.1 < 0.020 0.09 9.4 4.43 < 2.0 < 2 0.56 13         1001 2.9 71 10.00   50.0 3 5 3     40 3054   2 261 0.0097 0.0069 0.0028   1   40382                   10078 20230000
2023-05-11 10:15
 MDT
 K
 WS
 USGS-WRD
 180 9.0     677 1 7150     6.79 159 0.00001 8.0 8.1 76.4 20.3 6.27 0.99 1.4 < 0.030 < 0.03 0.92 2.4 590 45.2 0.049 0.78 37.9 3.35 < 2.0 3 2.07 202         1001 20 84 10.00 50.0   3 4 42     20 3054   2 163 0.1583 0.1331 0.0252   1   40382                 10079   20231000
2023-06-15 10:00
 MDT
 K
 WS
 USGS-WRD
 161 13.8     674 3 2710   5 4.26 202 0.00001 8.0 8.2 95.2 25.0 7.95 0.93 1.1 < 0.030 < 0.03 1.1 2.4 233 9.9 < 0.030 0.79 15.7 1.56 < 2.0 2 1.30 77     1.2   1001 6.3 85 10.00   0.0 3 4 13     20 3044   2 206 0.0317 0.0268 0.0049   1   40384                 10079   20231000
2023-07-13 10:45
 MDT
 K
 WS
 USGS-WRD
 155 17.0     676 2 1030     2.70 244 0.00001 8.3   130 32.9 11.7 1.2 1.2 < 0.030 < 0.03 0.46 0.6 68.6 8.0 < 0.030 0.08 6.8 1.85 < 2.0 < 2 0.82 29         1001 1.5 79 10.00 100.0   3 5 2     20 3054   2   0.0091 0.0072 0.0019   40   40384                   10080 20231000
2023-08-17 10:30
 MDT
 K
 WS
 USGS-WRD
 195 17.9 24.4   674 0.0 585   10 2.07 268 0.00001 8.3 8.3 139 34.0 13.2 1.3 1.4 < 0.030 < 0.03 0.43 0.4 33.4 6.9 < 0.030 0.05 7.7 2.45 < 2.0 < 2 0.63 17         1001 1.3 62 10.00 100.0   3 5 2     40 3044 10 2 267 0.0045 0.0028 0.0017   1   40384                   10080 20231000
2023-10-12 10:15
 MDT
 K
 WS
 USGS-WRD
 145 9.0   41.0 676 1 593     2.08 273 0.00001 8.1 8.2 145 36.1 13.3 1.1 1.1 < 0.030 < 0.03 < 0.40 0.4 54.5 13.0 < 0.030 0.04 4.3 2.01 < 2.0 < 2 0.63 17         1001 2.3 88 10.00 20.0   3 5 1     40 3054 10 2 277 0.0051 0.0045 0.0006   1   40389                     20231000
2023-11-03 10:30
 MDT
 K
 WS
 USGS-WRD
 155 3.4   41.0 677 2 612     2.07 279 0.00001 8.1 8.2 148 37.0 13.6 1.1 1.0 < 0.030 < 0.03 < 0.40 < 0.4 61.6 9.2 < 0.030 0.05 4.9 1.07 < 2.0 < 2 0.63 17         1001 2.4 95 10.00 30.0   3 5 6     40 3054 10 2 282 0.0155 0.0148 0.0007                             20231000

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