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RU29

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PU16

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CU58

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CU17

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PS35

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PL45

RU61

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NE23 RU88

PS30

NE26

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RD36

CB36

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JM59

PS65

RU14

PL68

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RA10

RU41

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JM01

TC13

RA46

RD12

JA08

JU69

BS14

JM66

JU36

NE39

YO68

CM30

CU14

TH02

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PL46

RA66

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JM14

RD67NE20

RU60

JL23

PS85

PS42

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PS75

RU30

PL64

YO48

RA55YO51

PS79

RU16

JM25

RD17TH35

RA19

PS63

JL26

RD15RU87

JU85

RA08

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CU01

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PS08

PL12

NE05

TH31

TC05

RU24

AS09

JL37

CM07NE50

RA64

JA14

JU81

NE22

PS67

JM28

TP12 JL48RD55

JM35

PS36

TP07

CU37

NE57

RA74YO61

TH03

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YO21

JL45

NE13

PS44

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PS27

NE36

CB35

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RU81

JM47

CU65

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PL39

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RD56

CU07

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PU18

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RU37

NE24

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AS02

PL42

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RA22

RU33

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PL31

TH41

RA01

PL01

TC29

PL36

RD66

NE30

PL32

JU84

JR20

RL20

CU33

JU75

PS11

YO69

TH08

RA62

CU05

PS70

RU62

YA03

BS28

RD22

RD60

CU50

CU69

RU32

RD54

JL56NE29

RU19

RU65

RA02

JU10

JL40

BS02

RU84

CU42

JA01

YO33

JL30

CB32

CB26

RD10

PL19

RD48

RD32

JL20

AS15

CU03

AO22

JL02

TH28

CB02

JU48

JU05

NE72

RU39

BS30

RA49

AO11

JU44

PL30

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RU15

PL13

JU78

CU26

RA61

JM73

PS57

CU53

RA06

RU91CM16

RA26

PS34

JU52

NE81

CU46

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TC06

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RU83

NE64

JL01

JL38

TC21

PL71

YO34

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RA11

PS76

JR22

NE73

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YO38

CU28

YO39

JU19

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PS14

RU06

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JM32

BS33

RL07

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RU50

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JA31

JM40

JU29

NE78

TC28

BS10

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CU61

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CM27

CM10

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JM08

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PL26

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JU66

RD44

RU67JL14

NE75

CU25

YO56

JU54

JA42JA27

RA69

RA51

PS32

RA17

NE74

CU12

PS16

TH24

RA57

RU23

NE49

JA03

CB06

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NE38

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JR10

JA10

CB41

RU55

RA70

TC18

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AS12

JR02

RD62

PS09

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CU35

RU70

RU51

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TH42

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NE67

RL09

AO26

RA56

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TC27

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RU63CU30

NE66RU25

PS43

PS71

NE34

TC32

JM19

NE33

PU12

JA34BS12

JA30

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YO63

JU65

NE68

JU15

RA24

RA12

BS05

JR12

CB12

BS13 CB19

JL17

JM71

CU19

RU36

CB16

CB28

PS28

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JL06

JU60

RU54

YO64

JM79

CB04

CL01

PS25

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JM61

NE60

PS51

JM11

AO16

TC12

RU07

RA42

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RD64

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PU10

CU59

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CB09

JM48YO50

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CM01

JM63

JU47

CM09

CU63

JM77

JM06

RA16

PL56RA18

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CU39RD35

JM64

CU70

RA27

AO10

CU51

RD20

PS77

CU54

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CU06

PS81

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JM54

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CU23

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JR17

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JM53

TH14

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JU57

PL60

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CU66

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RD38

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RU72

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CU60

RU76

RA41

PL70

YO54

JR15

PL47

CU13NE55

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PS03

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RU92

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JM55JM81

JA11

YO60

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CU10

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RD59

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JA32

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PU11

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PL57

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RD01NE16

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JM76

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JR21

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NE58

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JU50JU40

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RD08

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JA36

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BS31

JM67

BS18

PU17

JM57

PS21

YO06

CU21

PL27

TH11

PL51

RD43

RU86

RL03

RU27

RL12TH17

AS17

CU15

NE87

AO09

JU07

JL25

PL69

CU45

PL50

JA12

JA38

CU48

PL38

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JA13

RD16

CB01

PS73

JM30

PL15

NE10

PS66

YA04

JM75

CU16

RD05

RA20

RA65

JL57

JM24

JM15

RU44

RD29

JM85

TH15

PL23

YA06

RU03

TH18

RD33

JR13

JU59

JU22

CU27

YO40

RU90RU89

CM25

CU02

JU77

AS19

JU46

RA43

JM62

RU57

RA72

PS15

PS04

PS20

NE07

CM06

PL61

JU71

PL28

JM33

PS38

BS27

JU25

YO43

JL34

TH07

CB14

RA05

JL50

PU08

RU93

TH09

JA20

TH36

PL54

CB27

RD73

JL15

TH23

JU42

BS01

TH20 RU94

RA03

BS34

BS06

CB31

JU12

JA09

AS05RL16 RL21

CB03

PL62

PL04

PL63

NE11NE01

CM32RL01

PU06

RL04

BS07

TH06

RD70

BS03

AS06

CB33

PS86

CB34

AO07

RD14

RU28

TH22

RD04 RD69

TH45

NE85

AO01

TP16

RL22NE04

PL20

PU09

NE82

CL05RL05

PU20

RD13 RL08

JU17

PU15

TH19

PL74

CL04YA02

PU04

AS08

RL02

TP15TP17

AS11

PU05

CM26RD40

PS87

RL17

TP19

RD42

TC35

CM28

CB30

JU16

NE84

RL24

PU07

TH46

TC20

RD71YA01

TH05

RL15RD68 RL19

Virginia's 6th Order NWBD* Units

* NWBD: National Watershed Boundary Dataset (1,247 6th order watersheds)(also referred to as 12 digit hydrologic units, for example:Ramseys Draft: 6th order code JU62 = 12 digit code 020802020102)

Major River BasinsChesapeake Bay/Atlantic Ocean and Small CoastalChowan River and Dismal SwampJames RiverNew RiverPotomac RiverRappahannock RiverRoanoke and Yadkin RiversShenandoah RiverTennessee and Big Sandy RiversYork River

Sources:Virginia Department of Environmental Quality (Water Quality Standards)Virginia Department of Conservation & Recreation (Oct 2009; vanwbd_v4)« 0 25 50 75 10012.5

Miles