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Water Quality Samples for Virginia

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! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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.
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USGS 02049500 BLACKWATER RIVER NEAR FRANKLIN, VA

Southampton County, Virginia
Hydrologic Unit Code 03010202
Latitude  36°45'45", Longitude  76°53'55" NAD27
Drainage area 613  square miles
Gage datum 0.00 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 


Temper-
ature,
water,
deg C
(00010)

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

Instan-
taneous
dis-
charge,
ft3/s
(00061)		 Specif-
ic
conduc-
tance,
wat unf
uS/cm @
25 degC
(00095)


Dis-
solved
oxygen,
mg/L
(00300)
Dis-
solved
oxygen,
percent
of sat-
uration
(00301)
pH,
water,
unfltrd
field,
std
units
(00400)		 Bicar-
bonate,
wat flt
infl pt
titr.,
field,
mg/L
(00453)
Total
nitro-
gen,
water,
unfltrd
mg/L
(00600)
Total
nitro-
gen,
water,
fltrd,
mg/L
(00602)
Organic
nitro-
gen,
water,
unfltrd
mg/L
(00605)
Organic
nitro-
gen,
water,
fltrd,
mg/L
(00607)

Ammonia
water,
fltrd,
mg/L
as N
(00608)

Nitrite
water,
fltrd,
mg/L
as N
(00613)		 Ammonia
+
org-N,
water,
fltrd,
mg/L
as N
(00623)		 Ammonia
+
org-N,
water,
unfltrd
mg/L
as N
(00625)		 Nitrate
+
nitrite
water,
fltrd,
mg/L
as N
(00631)
Phos-
phorus,
water,
unfltrd
mg/L
as P
(00665)
Phos-
phorus,
water,
fltrd,
mg/L
as P
(00666)		 Ortho-
phos-
phate,
water,
fltrd,
mg/L
as P
(00671)

Organic
carbon,
water,
fltrd,
mg/L
(00681)
Organic
carbon,
suspnd
sedimnt
total,
mg/L
(00689)

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


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)


Iron,
water,
fltrd,
ug/L
(01046)

Manga-
nese,
water,
fltrd,
ug/L
(01056)		 Fecal
coli-
form,
M-FC
0.7u MF
cfu/
100 mL
(31625)		 Fecal
strep-
tococci
KF
MF,
cfu/
100 mL
(31673)		 Alka-
linity,
wat flt
inf tit
field,
mg/L as
CaCO3
(39086)		 Dis-
solved
solids
dried @
180degC
wat flt
mg/L
(70300)		 Suspnd.
sedimnt
sieve
diametr
percent
<0.0625
mm
(70331)		 Sus-
pended
sedi-
ment
concen-
tration
mg/L
(80154)		 Sus-
pended
sedi-
ment
dis-
charge,
ton/d
(80155)
1993-03-18 10:30
 EST
 T
 WS
 USGS-WRD
 5.3 767 3090 65 10.9 85 6.7 11 1.0 1.0 0.45 0.45 0.050 < 0.010 0.50 0.50 0.530 0.05 < 0.01 < 0.01 9.5 0.2                               9   52 25 209
1993-04-22 12:30
 EDT
 T
 WS
 USGS-WRD
 16.3 750 1170 67 6.4 66 6.8 26 0.97 0.97     0.500 0.010 0.50 0.50 0.470 0.03 0.05 < 0.01 13.0 0.3 31.9 9.80 1.80 3.30 0.25 17 2.10 9.7 6.90 0.1 1.20 900 53.0 E 85 46 21 65 88 9 28
1993-05-18 11:00
 EDT
 T
 WS
 USGS-WRD
 20.0 762 660 95 5.8 64 7.1 25 1.0 1.0 0.63 0.63 0.070 0.010 0.70 0.70 0.300 0.08 0.04 0.02 12.0 1.3 35.4 11.0 1.90 3.20 0.23 15 2.80 8.8 4.70 0.1 4.10 1600 66.0 94 123 20 79 91 11 20
1993-06-17 10:30
 EDT
 T
 WS
 USGS-WRD
 22.0 773 289 72 4.1 46 6.4 26 0.93 0.83 0.63 0.53 0.070 < 0.010 0.60 0.70 0.230 0.15 0.13 0.03 13.0 0.6 34.1 11.0 1.60 3.20 0.24 16 2.20 7.4 3.80 0.1 6.30 1500 140 E 54 E 14 21 84 58 10 7.8
1993-07-21 10:30
 EDT
 T
 WS
 USGS-WRD
 27.7 769 6.0 130     6.6 49 0.96 0.76 0.70 0.50 0.200 < 0.010 0.70 0.90 0.063 0.10 0.02 0.03 12.0 2.0 47.3 15.0 2.40 4.30 0.27 15 3.00 8.9 6.80 0.1 6.80 1300 770 E 240 66 40 100 95 10 0.16
1993-08-25 09:15
 EDT
 T
 WS
 USGS-WRD
 24.0 770 5.4 150 3.7 43 6.8 84 < 0.65   0.55   0.050 < 0.010   0.60 < 0.050 0.05 0.02 0.01     46.2 14.0 2.70 4.70 0.30 17 3.00 9.7 6.30 0.1 4.40 420 170 E 0.0 44 69 82 96 3 0.04
1993-09-15 10:00
 EDT
 T
 WS
 USGS-WRD
 23.0 771 5.7 120 5.0 57 6.9 43 0.77 0.57 0.66 0.46 0.040 < 0.010 0.50 0.70 0.071 0.06 0.03 0.01 10.0 0.1 49.4 15.0 2.90 5.00 0.31 17 3.10 9.5 6.40 0.1 4.40 620 160 49 640 36 80 74 8 0.12
1993-10-14 09:30
 EDT
 T
 WS
 USGS-WRD
 14.7 771 0.00 139 3.9 38 6.9 49 0.89 0.59 0.57 0.27 0.130 < 0.010 0.40 0.70 0.190 0.05 0.02 0.02 7.6 0.8 51.5 16.0 2.80 5.40 0.33 17 3.40 9.7 7.30 0.1 3.80 150 130 59 55 40 84 71 10 0.00
1993-11-10 09:30
 EST
 T
 WS
 USGS-WRD
 9.0 774 1.5 146 7.4 63 7.0 50 0.75 0.65 0.38 0.28 0.020 < 0.010 0.30 0.40 0.350 0.04 0.02 0.01 7.1 0.4 54.4 17.0 2.90 6.10 0.36 19 3.20 8.8 10.0 0.1 3.00 75.0 45.0 E 8 83 41 92 78 6 0.02
1993-12-03 12:00
 EST
 T
 WS
 USGS-WRD
 7.3 775 21 208 6.3 51 6.5 57 0.52 0.42 0.27 0.17 0.030 < 0.010 0.20 0.30 0.220 0.09 < 0.01 < 0.01 7.4 0.3 76.0 25.0 3.30 6.40 0.32 15 4.20 10.0 31.0 < 0.1 7.10 230 460 170 44 47 135 93 4 0.23
1994-01-06 11:30
 EST
 T
 WS
 USGS-WRD
 2.3 781 481 199 11.4 81 5.9 2 0.61 0.51 0.39 0.29 0.010 < 0.010 0.30 0.40 0.210 0.02 0.01 < 0.01 7.7 0.2 66.4 21.0 3.40 6.60 0.35 17 2.50 14.0 56.0 < 0.10 11.0 150 420 290 485 2 137 85 4 5.2
1994-02-16 15:00
 EST
 T
 WS
 USGS-WRD
 3.8 783 1880 111 12.3 91 6.0 4 1.3 1.1 0.47 0.27 0.030 0.060 0.30 0.50 0.820 0.02 0.02 < 0.01 7.9 0.3 32.8 10.0 1.90 4.20 0.32 20 2.20 10.0 22.0 < 0.10 5.60 170 69.0 74 128 3 78 82 7 36
1994-03-24 10:30
 EST
 T
 WS
 USGS-WRD
 12.8 762 983 93 7.7 73 6.7 9 0.60 0.60 0.34 0.34 0.060 < 0.010 0.40 0.40 0.200 0.02 0.02 < 0.01 9.8 0.3 29.3 9.10 1.60 3.50 0.28 19 1.80 8.00 16.0 < 0.10 3.50 310 34.0     7 64 93 5 13
1994-04-14 10:30
 EDT
 T
 WS
 USGS-WRD
 17.1 764 702 90 5.7 59 6.3 15 0.83 0.63 0.65 0.45 0.050 < 0.010 0.50 0.70 0.130 0.04 < 0.01 < 0.01 14.0 1.3 31.6 10.0 1.60 3.30 0.26 17 2.00 7.90 11.0 < 0.10 3.70 790 89.0     13 73 94 5 9.5
1994-05-11 10:30
 EDT
 T
 WS
 USGS-WRD
 15.4 758 365 95 6.0 60 6.4 20 1.0 1.0 0.84 0.84 0.060 0.010 0.90 0.90 0.130 0.05 0.05 0.04 17.0 0.3 34.5 11.0 1.70 3.90 0.29 19 2.00 9.70 5.80 < 0.10 7.10 1600 72.0     17 95 85 6 5.9
1994-06-15 09:30
 EDT
 T
 WS
 USGS-WRD
 24.0 769 0.00 120 4.5 53 6.7 38 1.1 1.0 0.72 0.62 0.080 < 0.010 0.70 0.80 0.330 0.05 0.03 0.02 15.0 0.4 46.1 15.0 2.10 4.30 0.28 16 2.00 10.0 6.10 < 0.10 7.50 2100 350     31 105 86 8 0.00
1994-07-18 12:00
 EDT
 T
 WS
 USGS-WRD
 26.0 768 3.9 149 3.3 40 6.7 43 0.92 0.62 0.76 0.46 0.040 < 0.010 0.50 0.80 0.120 0.06 0.01 < 0.01 11.0 1.0 56.5 18.0 2.80 4.70 0.27 14 4.40 10.0 14.0 0.10 4.60 410 780     36 113 95 11 0.12
1994-08-18 12:00
 EDT
 T
 WS
 USGS-WRD
 25.0 767 25 123 6.0 72 6.7 20 0.97 0.87 0.61 0.51 0.090 < 0.010 0.60 0.70 0.270 0.05 0.05 0.03 14.0 0.7 45.7 14.0 2.60 4.10 0.26 15 2.90 10.0 17.0 0.10 7.90 1200 210     16 70 100 11 0.74
1994-09-15 11:00
 EDT
 T
 WS
 USGS-WRD
 20.5 771 1.4 150 8.6 94 6.9 40 0.72 0.72 0.56 0.56 0.040 < 0.010 0.60 0.60 0.120 0.03 0.02 0.01 15.0 0.8 54.4 17.0 2.90 5.60 0.33 17 2.80 12.0 13.0 0.10 6.80 1100 240     33 117 93 7 0.03
1994-10-20 12:00
 EDT
 T
 WS
 USGS-WRD
 13.0 766 6.6 135 7.4 70 6.7 24 0.86 0.76 0.56 0.46 0.04 < 0.010 0.50 0.60 0.26 0.03 0.02 0.01 12.0 0.5 45.7 14.0 2.60 4.90 0.32 18 2.20 11.0 20.0 < 0.10 7.60 1000 180     20 107 77 6 0.11
1994-11-16 10:00
 EST
 T
 WS
 USGS-WRD
 12.0 770 9.1 159 4.8 44 6.4 34 0.84   < 0.70   < 0.02 < 0.010   0.70 0.14 0.04 0.03 0.01     56.2 17.0 3.30 5.10 0.30 15 4.20 15.0 14.0 0.10 8.50 1700 160 30 19 28 117 90 5 0.12
1994-12-12 14:00
 EST
 T
 WS
 USGS-WRD
 9.5 775 201 86 7.3 63 6.9 15 0.77 0.87 0.68 0.78 0.02 < 0.010 0.80 0.70 0.07 0.03 0.03 0.02 16.0 0.5 23.8 5.90 2.20 5.90 0.53 32 2.80 7.20 5.60 < 0.10 16.0 1000 39.0     12 66 100 4 2.2
1995-01-18 12:45
 EST
 T
 WS
 USGS-WRD
 10.9 770 435 120 6.9 62 6.6 13 0.62 0.62 0.48 0.48 0.02 0.010 0.50 0.50 0.12 0.02 < 0.01 0.01 12.0 0.5 38.6 12.0 2.10 5.10 0.36 21 2.40 14.0 14.0 < 0.10 8.60 870 38.0     11 97 96 6 7.0
1995-02-23 11:45
 EST
 T
 WS
 USGS-WRD
 7.0 769 596 109 10.0 81 6.6 13 0.68 0.58 < 0.40 < 0.30 < 0.02 < 0.010 0.30 0.40 0.28 0.04 < 0.01 < 0.01 8.4   35.7 11.0 2.00 4.50 0.33 20 1.90 11.0 13.0 < 0.10 5.60 520 21.0     11 87 100 5 8.0
1995-04-06 09:30
 EDT
 T
 WS
 USGS-WRD
 13.0 768 141 112 9.4 88 6.4 30 0.77   0.56   0.04 0.030   0.60 0.17 0.04 0.04 0.02     40.8 13.0 2.00 4.30 0.29 18 2.20 11.0 7.60 < 0.10 2.00 1400 91.0 29 E 12 25 92 96 7 2.7
1995-05-23 12:15
 EDT
 T
 WS
 USGS-WRD
 20.0 775 159 103 4.5 49 5.9 30 1.0 1.0 0.74 0.74 0.06 0.020 0.80 0.80 0.22 0.04 0.05 0.03 17.0 0.2 40.3 13.0 1.90 4.00 0.27 17 2.30 9.30 2.30 0.10 6.10 2200 98.0     25 101      
1995-06-27 09:00
 EDT
 T
 WS
 USGS-WRD
 24.0 763 63 100 4.1 49 6.7 28 1.1   0.86   0.04 0.010   0.90 0.19 0.09 0.05 0.04     39.6 13.0 1.70 3.80 0.26 16 1.90 7.90 3.40 0.20 8.50 2000 150 240 246 23 102 81 9 1.5
1995-08-17 10:00
 EDT
 T
 WS
 USGS-WRD
 27.0   0.00 129 5.4   6.4 48 < 0.95   0.83   0.07 < 0.010   0.90 < 0.05 0.07 0.02 0.02     53.8 18.0 2.10 3.90 0.23 13 2.50 7.10 4.20 < 0.10 9.10 2100 1100 55 E 19 40 104 97 12 0.00
1996-06-13 10:00
 EDT
 T
 WS
 USGS-WRD
 22.4 766 180 94 4.9 56     1.2 0.91 0.89 0.59 0.11 0.030 0.70 1.0 0.21 0.25 0.06 0.03 13.0 4.0 32.4 10.0 1.80 3.40 0.26 17 2.70 8.00 9.00 0.10 5.30 1200 140       83      
1996-08-20 11:00
 EDT
 T
 WS
 USGS-WRD
 23.0 776 300 101 4.8 55 6.0 27 0.94 0.94 0.66 0.66 0.04 < 0.010 0.70 0.70 0.24 0.05 0.04 0.04 18.0 0.8 34.9 11.0 1.80 3.10 0.23 15 2.40 8.30 4.60 < 0.10 7.70 1900 110     22 108 100 8 6.5
1996-09-26 09:00
 EDT
 T
 WS
 USGS-WRD
 18.5 764 222 103 4.9 52 6.3 26 0.83 0.83 0.65 0.65 0.05 0.010 0.70 0.70 0.13 0.04 0.03 0.03 17.0 0.9 35.3 11.0 1.90 3.40 0.25 16 2.90 9.60 5.30 < 0.10 8.30 1800 79.0     21 94 100 12 7.2

Water Quality Remark Code Description
< Less than
E Estimated