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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 12323600 Silver Bow Creek at Opportunity MT

Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'27.93", Longitude 112°48'19.02" NAD83
Drainage area 343  square miles
Gage datum 4,912 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)


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,
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)
Turbdty
white
light,
det ang
90+/-30
corrctd
NTRU
(63676)
Dis-
solved
solids,
sum of
consti-
tuents,
mg/L
(70301)


Dis-
solved
solids,
water,
ton/d
(70302)

Dis-
solved
solids,
water,
tons/
acre-ft
(70303)
Suspnd.
sedimnt
sieve
diametr
percent
<0.0625
mm
(70331)




Sample
purpose
code
(71999)
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)
Suspnd
sedimnt
mass
between
63 um &
4 mm,
grams
(91165)
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)
2017-10-23 12:20
MDT
K
WS
USGS-WRD
23.0 5.0 8.0   48 23 2.11 496 M  8.5 8.2 0.7 3.28 192 85 56.9 12.0 24.2 0.76 21 4.57 35.9 82.3 0.37 24.4 4.6 6.2 0.139 0.27 7.6 16.5 272 20.5 0.107 1.72 69.3 29.8 38.3 58 106 0.64 1.4   0.2   1001 E 3.4 305 39.2 0.41 92     3 5 8 1.0 2.40 10 3045 50 3 494     40236 40241 30529 30522     20269   20264   10044  
2018-03-26 13:40
MDT
K
WS
USGS-WRD
27.0 4.5 7.0   62 25 2.10 412 0.00001 7.9 7.9 2.3 7.29 142 49 41.6 9.19 22.5 0.82 24 7.89 25.3 61.9 0.44 24.5 9.9 12.6 0.373 0.55 25.3 39.3 790 178 0.608 2.97 229 147 120 148 92.9 0.64 1.8   2.1   1001 E 8.3 249 41.9 0.34 93     3 5 20 3.4 2.40 10 3045 50 3 409     40236 40246 30505 30551     20270   20264   10044  
2018-04-16 12:40
MDT
K
WS
USGS-WRD
30.0 5.0 4.0   102 28 2.42 394 0.00002 7.8 7.9 3.0 5.66 146 45 40.9 10.6 22.5 0.81 24 4.77 22.4 61.5 0.37 27.6 7.8 10.1 0.256 0.54 17.1 38.2 1030 126 0.294 3.77 197 101 85.1 135 101 0.74 2.9   0.4   1001 E 11 251 69.2 0.34 76     3 5 32 8.8 2.40 10 3045 50 3 397     40258 40246 30569 30551 30541   20291   20276   10044  
2018-05-07 12:25
MDT
K
WS
USGS-WRD
33.0 10.0 15.0   293 11 3.43 248 0.00001 7.8 7.8 2.0 8.62 96.8 25 29.5 5.64 13.7 0.60 23 3.32 11.3 36.7 0.25 26.0 11.5 13.8 0.138 0.39 15.4 40.1 1390 168 0.539 7.51 154 37.3 36.4 91 72.2 1.05 8.3   0.4   1001 20 170 134 0.23 67     3 5 61 48 2.70 10 3045 10 2 260     40258 40246 30569 30551     20291   20280   10044  
2018-05-21 12:45
MDT
K
WS
USGS-WRD
28.0 10.0 18.0   327 4 3.62 237 0.00001 8.0 7.9 1.4 8.03 97.0 24 29.3 5.79 11.2 0.49 20 2.57 8.18 33.0 0.22 25.8 9.4 11.1 0.107 0.25 11.4 26.4 815 140 0.359 10.9 103 42.5 25.5 51 73.3 1.10 9.3 0.2   0.3 1001 E 11 160 141 0.22 65     3 5 32 28 2.80 20 3044 10 2 242     40258 40254 30569 30551     20291   20280   10044  
2018-06-04 13:35
MDT
K
WS
USGS-WRD
30.0 14.0 28.0   264 10 3.32 253 0.00001 8.2 8.0 1.1 7.54 101 20 30.8 5.98 12.1 0.52 20 2.72 8.90 32.3 0.26 25.1 9.6 11.1 0.106 0.24 12.6 23.2 768 134 0.399 3.42 111 59.6 22.5 48 81.2 1.01 7.5   0.5   1001 E 9.5 167 119 0.23 77     3 5 27 19 2.70 10 3044 10 2 256     40258 40254 30505 30600     20291   20280   10044  
2018-07-16 13:20
MDT
K
WS
USGS-WRD
22.0 17.0 31.0   78 20 2.26 373 M  8.6 8.3 0.5 4.84 148 45 44.5 8.94 19.3 0.69 22 3.48 20.3 55.4 0.33 26.8 8.4 9.0 0.140 0.22 12.4 17.9 276 52.9 0.183 1.12 52.7 30.7 21.5 40 103 0.69 2.2   19   1001 E 3.3 241 50.8 0.33 90 40.00   3 5 7 1.5 2.40 10 3044 10 2 380     40258 40254 30576 30645 30542   20315   20280   10052  
2018-08-13 12:40
MDT
K
WS
USGS-WRD
23.0 16.5 25.0   36 23 1.89 493 M  8.5 8.3 0.7 3.20 194 77 56.8 12.7 25.3 0.79 22 4.22 33.4 81.2 0.42 27.4 7.0 7.5 0.222 0.26 12.1 16.4 128 20.9 0.087 0.64 44.7 26.8 33.1 43 117 0.58 1.0   0.1   1001 < 2.0 311 30.3 0.42 86 40.00   3 5 5 0.49 1.90 10 3044 10 2 498     40258 40254 30511 30645 30635   20315 20273 20280   10055  
2018-10-15 13:05
MDT
K
WS
USGS-WRD
28.0 4.0 14.0   52 28 2.05 471 0.00001 8.2 8.3 1.5 2.71 186 74 53.9 12.4 24.0 0.77 21 4.25 30.6 78.9 0.42 27.7 4.9 5.0 0.226 0.27 11.6 15.1 175 35.5 0.100 0.73 48.5 37.0 70.0 72 112 0.62 1.5   0.2   1001 < 2.0 300 41.7 0.41 97 40.00   3 5 2 0.28 2.10 10 3044 200 2 479 0.0033 0.0001 40258 40267 30576 30645 30635   20291 20316 20280   10055  
2019-03-25 14:00
MDT
K
WS
USGS-WRD
25.0 0.0 8.0   74 12 2.49 421 0.00002 7.8 8.0 2.6 8.68 144 57 40.7 10.3 23.6 0.85 25 7.21 36.4 54.6 0.44 20.6 8.0 17.5 0.398 1.37 28.8 121 3840 146 0.504 21.7 994 151 109 329 87.4 0.76 2.1   0.5   1001 41 247 49.4 0.34 86 40.00   3 5 144 29 1.50 10 3044 200 2 417 0.1503 0.0206 40280 40282 30614 30656 30635   20356   20350   10055  
2019-04-22 12:50
MDT
K
WS
USGS-WRD
32.0 7.0 17.0   195 16 3.00 344 0.00001 8.0 8.2 1.6 7.12 130 46 38.0 8.42 17.4 0.67 22 4.22 18.1 56.1 0.34 26.0 10.5 12.1 0.394 0.45 28.9 38.0 1260 681 2.21 4.25 227 166 95.4 119 83.9 0.91 5.5   0.6   1001 E 13 220 116 0.30 79     3 5 35 18 2.60 10 3044 10 2 349 0.0567 0.0121 40280 40282 30614 30656 30635   20356 20316 20350   10055  
2019-05-06 12:45
MDT
K
WS
USGS-WRD
27.0 8.0 14.0   141 12 2.67 337 0.00001 8.1 8.2 1.2 5.40 130 45 39.1 7.98 17.2 0.66 22 3.41 17.3 55.7 0.36 25.3 6.6 9.1 0.258 0.36 14.9 28.8 718 108 0.200 2.06 166 115 51.9 85 85.6 0.81 4.0   2.5   1001 E 7.9 218 82.8 0.30 81 40.00   3 5 20 7.6 2.50 10 3044 10 2 342 0.0259 0.0049 40280 40282 30715   30635     20316 20350   10055  
2019-05-20 14:25
MDT
K
WS
USGS-WRD
30.0 5.5 7.0   228 10 3.21 297 0.00001 8.0 8.1 1.8 6.77 107 26 32.6 6.34 13.3 0.56 21 2.66 12.9 45.3 0.26 22.7 7.1 8.7 0.186 0.28 14.2 26.4 771 143 0.257 2.64 128 68.1 47.8 74 81.0 0.98 6.4   1.7   1001 E 6.9 185 114 0.25 74 40.00   3 5 28 17 3.70 10 3044 10 2 301 0.0427 0.0112 40280 40282 30614 30656 30635   20356 20316 20350   10055  
2019-06-03 11:15
MDT
K
WS
USGS-WRD
  12.0 22.0   226   3.10 267 0.00001 8.1 8.1 1.3 5.93 102 24 31.1 5.96 11.1 0.48 19 2.26 10.4 38.3 0.26 22.1 6.7 8.3 0.154 0.28 11.4 23.9 740 115 0.204 2.56 126 59.1 34.5 65 78.7 0.94 6.4       1001 E 3.0 169 103 0.23 77     3 5 26 16 2.70 10 3044 10 2 270 0.0408 0.0092 40280 40282 30715 30656 30635   20356 20316 20350   10057  
2019-07-15 12:30
MDT
K
WS
USGS-WRD
32.0 18.0 23.5   54 11 2.06 443 M  8.6 8.4 0.6 3.56 175 64 50.6 11.9 22.9 0.75 22 4.31 27.2 74.9 0.40 24.1 7.5 7.4 0.161 0.21 11.3 14.8 118 17.5 0.059 0.46 40.9 25.7 19.4 33 111 0.63 1.5   0.3   1001 < 2.0 283 40.9 0.38 84     3 5 2 0.29 2.70 10 3044 10 2 451 0.0031 0.0005 40280 40282 30715 30656 30724   20356 20316 20350   10057  
2019-08-19 11:20
MDT
K
WS
USGS-WRD
22.0 16.0 27.0   30 11 1.85 538 0.00001 8.3 8.3 1.2 3.03 188 69 54.7 12.5 29.2 0.93 25 4.91 38.7 95.7 0.63 26.5 7.7 7.7 0.270 0.32 11.6 15.9 141 20.5 0.131 0.71 77.0 35.0 44.4 59 119 0.56 0.85   0.2   1001 < 2.0 334 27.0 0.45 85     3 5 4 0.32 1.80 10 3044 10 2 544 0.0047 0.0007 40286 40282 30715 30656 30724   20356 20316 20350   10062  
2019-10-07 12:15
MDT
K
WS
USGS-WRD
  13.0 15.0   68   2.20 793 0.00001 8.1 8.2 1.4 2.73 324 227 112 10.8 32.5 0.78 17 8.24 28.5 275 0.67 23.2 5.0 5.3 0.863 0.70 9.0 14.3 176 10.7 0.042 0.74 122 78.5 79.6 93 97.1 0.67 1.9       1001 < 2.0 549 101 0.75 93     3 5 4 0.74 2.00 10 3044 10 2 805 0.0102 0.0007 40286 40295 30715 30656 30724   20356 20316 20350   10062  
2020-03-24 12:35
MDT
K
WS
USGS-WRD
  3.2 3.0   56   1.92 838 0.00001 8.0 8.0 2.1 3.99 333 233 115 11.0 33.1 0.79 17 9.42 29.0 292 0.76 21.9 6.8 7.4 1.23 0.97 12.3 30.2 559 27.2 0.092 2.27 304 205 94.7 141 100 0.59 1.6       1001 E 7.7 573 86.5 0.78 90     2 5 17 2.6   10 3044 10 2 833 0.0379 0.0038 40286 40299 30715 30713 30724   20356   20350   10062  
2020-04-13 11:50
MDT
K
WS
USGS-WRD
27.0 2.4 -4.0   64 14 2.01 793 0.00002 7.8 7.9 3.1 4.12 331 239 114 11.3 33.0 0.79 17 9.19 30.5 263 0.69 23.8 5.4 8.2 0.996 0.87 11.9 31.1 780 45.7 0.107 2.88 307 194 98.4 141 91.7 0.61 1.8   0.6   1001 E 8.8 540 93.9 0.73 94     3 5 26 4.5   10 3044 10 2 788 0.0660 0.0042 40308 40299 30763 30713 30724   20356   20350   10062  
2020-05-05 12:15
MDT
K
WS
USGS-WRD
29.0 8.1 17.0   100 14 2.29 607 0.00001 8.0 8.0 1.6 4.51 247 165 86.3 7.74 22.7 0.63 16 6.09 18.3 202 0.47 21.5 6.1 6.7 0.532 0.71 8.4 26.9 701 35.2 0.097 2.70 250 124 48.8 92 82.3 0.70 2.8   0.1   1001 E 9.0 415 112 0.56 88     3 5 24 6.5   10 3044 200 2 611 0.0618 0.0077 40308 40311 30763 30811 30724   20419   20350   10062  
2020-05-18 11:20
MDT
K
WS
USGS-WRD
27.0 9.8 16.0   130 14 2.48 712 0.00001 7.9 8.0 2.1 4.65 312 226 111 8.44 27.0 0.67 15 7.48 19.1 258 0.56 20.7 5.3 6.3 0.737 0.79 8.3 22.4 482 20.2 0.048 1.79 206 130 51.7 84 86.1 0.76 3.7   0.5   1001 E 6.9 504 177 0.69 79     3 5 19 6.7   10 3044 10 2 721 0.0466 0.0098 40308 40311 30763 30811 30724   20419   20350   10063 20201000
2020-07-13 11:55
MDT
K
WS
USGS-WRD
22.0 13.4 21.5   107 11 2.50 647 M  8.6 8.3 0.4 4.31 272 179 94.8 8.51 24.2 0.64 16 6.28 19.2 218 0.54 22.1 5.7 6.8 0.446 0.47 7.1 11.2 160 14.5 0.045 0.44 87.8 72.4 20.9 35 92.8 0.76 3.0   0.1   1001 < 2.0 450 130 0.61 95     3 5 3 0.87   10 3044 10 2 653 0.0088 0.0004 40312 40311 30763 30811 30831   20419   20350   10063 20201000
2020-08-17 12:00
MDT
K
WS
USGS-WRD
17.0 17.2 33.5     8   1020 M  8.5 8.3 0.6 2.52 468 373 166 13.2 44.1 0.89 17 11.3 39.7 391 0.86 23.2 5.7 5.2 0.694 1.09 7.4 11.2 75.2 < 10.0 < 0.040 0.32 81.1 41.7 25.7 41 95.6       0.1   1001 < 2.0 747   1.02 81     3 5 3     10 3044 10 2 1030 0.0084 0.0016 40312 40311 30763 30811   30857 20419   20350   10063 20201000
2020-10-13 12:30
MDT
K
WS
USGS-WRD
26.0 6.1 9.5     13   950 0.00001 8.2 8.2 1.2 2.05 415 312 146 12.2 35.5 0.76 15 8.86 29.1 356 0.87 19.8 4.4 4.3 0.699 0.59 5.9 9.0 87.3 6.9 0.033 0.43 64.2 38.6 49.4 56 103       0.2   1001 E 2.6 671   0.91 84     3 5 2     10 3045 10 2 932 0.0057 0.0009 40312 40311 30763 30811   30857 20419 20379 20398   10063 20201000
2021-03-22 12:30
MDT
K
WS
USGS-WRD
25.0 3.3 4.5     12   1020 0.00001 8.1 7.9 1.4 4.27 455 361 163 11.5 39.4 0.80 15 11.9 28.6 398 1.01 21.9 5.4 6.7 0.923 0.83 11.1 25.6 455 50.3 0.149 2.51 333 245 98.1 126 94.0       0.1   1001 E 5.5 732   1.00 88     3 5 15     10 3044 10 2 998 0.0365 0.0044 40325 40327 30862 30870   30857 20451   20398   10063 20210000
2021-04-12 11:40
MDT
K
WS
USGS-WRD
27.0 2.1 0.5     18   951 0.00001 8.0 8.0 1.8 2.98 418 325 149 11.1 36.9 0.78 16 9.89 26.3 344 0.91 21.5 4.2 5.0 0.978 0.69 7.4 19.1 378 13.5 0.060 1.58 293 233 93.7 108 93.0       0.3   1001 E 4.0 656   0.89 87     3 5 13     10 3044 10 2 948 0.0331 0.0044 40325 40327 30862 30870   30857 20480   20422   10063 20211000
2021-05-04 12:25
MDT
K
WS
USGS-WRD
30.0 8.8 12.0     20   924 0.00001 8.3 8.0 0.9 3.50 418 331 153 8.77 33.8 0.72 15 9.18 21.8 377 0.87 19.7 4.2 5.6 0.921 0.73 7.1 21.8 458 11.0 0.048 1.84 275 189 55.3 90 87.6       0.2   1001 E 5.2 677   0.92 90     3 5 14     10 3044 10 2 930 0.0359 0.0037 40325 40327 30862 30870   30857 20480   20422   10067 20211000
2021-05-17 12:15
MDT
K
WS
USGS-WRD
21.0 13.1 25.0     21   871 M  8.5 8.0 0.6 3.38 391 301 142 9.13 32.2 0.71 15 8.46 23.2 350 0.78 18.9 4.4 5.1 0.839 0.69 6.7 17.0 323 10.8 0.054 1.34 245 182 36.2 69 89.8       0.2   1001 E 3.0 638   0.87 87     3 5 12     10 3044 10 2 884 0.0311 0.0039 40325 40332 30862 30870   30857 20480   20422   10067 20211000
2021-06-07 11:45
MDT
K
WS
USGS-WRD
23.0 12.1 15.0     12   813 M  8.5 8.1 0.5 3.13 350 263 126 8.29 28.7 0.67 15 7.71 22.6 308 0.74 16.6 4.4 5.1 0.704 0.64 6.2 13.7 175 11.5 0.053 0.88 149 112 31.0 50 87.0       0.3   1001 E 2.4 572   0.78 91     3 5 7     10 3044 10 2 821 0.0112 0.0010 40325 40332 30914 30870   30857 20480   20529   10067 20211000
2021-07-12 12:00
MDT
K
WS
USGS-WRD
20.0 19.0 25.0     20   1010 M  8.8 8.4 0.3 2.56 430 345 154 11.0 42.1 0.88 17 10.0 41.0 360 0.94 18.7 5.7 6.1 0.788 0.67 6.8 10.4 70.6 7.2 0.072 0.40 85.3 53.9 17.2 26 84.9       0.2   1001 < 2.0 689   0.94 90     3 5 3     10 3044 10 2 1010 0.0040 0.0004 40336 40332 30914   30922 30857 20480   20529   10067 20211000
2021-08-16 11:45
MDT
K
WS
USGS-WRD
20.0 18.7 31.0 1   12   1160 M  8.8 8.7 0.3   514 420 184 13.3 51.1 0.98 17 12.6 47.8 478 1.12 22.2 5.9 6.1 1.10 0.62 8.4 9.9 42.0 6.2 0.067 0.26 40.5 32.2 26.5 30 94.3       0.1   1001 < 2.0 866   1.18   10.00 200.0 3 5       10 3044 10 2 1170     40336 40332 30926 30870 30922 30878 20480 20468 20529 81818 10067 20211000
2021-10-12 12:15
MST
K
WS
USGS-WRD
26.0 3.7 1.0 2 42 13 2.03 1340 M  8.5     1.78                                                       0.62 1.2   0.2   1001 < 2.0           250.0 3 5       10 3044 10 2       40336 40339 30926   30922 30857 20480 20468 20529   10067  

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