Ground Water Information Center | MBMG Data Center Montana Bureau of Mines and Geology Montana Technological University 1300 West Park Street - Natural Resources Building Room 329 Butte Montana 59701-8997 Ph: (406) 496-4336 Fx: (406) 496-4343	4/19/2024
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Listed below are the currently available Drainage Basin Codes in GWIC.

Basin	HUC	Description
AA	10020001	RED ROCK RIVER
AB	10020002	BEAVERHEAD RIVER
AC	10020003	RUBY RIVER
AD	10020004	BIG HOLE RIVER
AE	10020005	JEFFERSON RIVER
AF	10020006	BOULDER RIVER
AG	10020007	MADISON RIVER
AH	10020008	GALLATIN RIVER
BA	10030101	MISSOURI RIVER BETWEEN LITTLE PRICKLY PEAR CREEK AND THREE FORKS
BB	10030102	MISSOURI RIVER BETWEEN MARIAS RIVER AND LITTLE PRICKLY PEAR CREEK
BC	10030103	SMITH RIVER
BD	10030104	SUN RIVER
BE	10030105	BELT CREEK
CA	10030201	TWO MEDICINE RIVER
CB	10030202	CUTBANK CREEK
CC	10030203	MARIAS RIVER
CD	10030204	WILLOW CREEK OF THE MARIAS RIVER
CE	10030205	TETON RIVER
DA	10040101	MISSOURI RIVER BETWEEN BULLWHACKER CREEK AND MARIAS RIVER
DB	10040102	ARROW CREEK
DC	10040103	JUDITH RIVER
DD	10040104	MISSOURI RIVER BTWN FT PECK DAM AND BULLWHACKER CK
DE	10040105	BIG DRY CREEK
DF	10040106	LITTLE DRY CREEK
EA	10040201	MUSSELSHELL RIVER ABOVE HALFBREED CREEK
EB	10040202	MUSSELSHELL RIVER BTWN FLATWILLOW CK AND HALFBREED CK
EC	10040203	FLATWILLOW CREEK
ED	10040204	BOX ELDER CREEK
EE	10040205	MUSSELSHELL RIVER BELOW FLATWILLOW CREEK
FA	10050001	MILK RIVER ABOVE RED RIVER OF THE MILK RIVER
FB	10050002	MILK RIVER BTWN FRESNO DAM AND RED RIVER OF THE MILK RIVER
FC	10050003	WILDHORSE LAKE INTERNAL DRAINAGE
FD	10050004	MILK RIVER BETWEEN WHITEWATER CREEK AND FRESNO DAM
FE	10050005	BIG SANDY CREEK
FF	10050006	SAGE CREEK OF THE MILK RIVER
FG	10050007	LODGE CREEK
FH	10050008	BATTLE CREEK
FI	10050009	PEOPLES CREEK
FJ	10050010	COTTONWOOD CREEK OF THE MILK RIVER
FK	10050011	WHITEWATER CREEK
FL	10050012	MILK RIVER BELOW WHITEWATER CREEK
FM	10050013	FRENCHMAN CREEK
FN	10050014	BEAVER CREEK OF THE MILK RIVER
FO	10050015	ROCK CREEK OF THE MILK RIVER
FP	10050016	PORCUPINE CREEK OF THE MILK RIVER
GA	10060001	MISSOURI RIVER BETWEEN POPLAR RIVER AND FT PECK DAM
GB	10060002	REDWATER RIVER
GC	10060003	POPLAR RIVER
GD	10060004	WEST FORK POPLAR RIVER
GE	10060005	MISSOURI RIVER BTWN YELLOWSTONE RIVER AND POPLAR RIVER
GF	10060006	BIG MUDDY CREEK
GG	10060007	GOOSE LAKE INTERNAL DRAINAGE
HA	10070001	YELLOWSTONE RIVER ABOVE REESE CREEK
HB	10070002	YELLOWSTONE RIVER BTWN BRIDGER CK AND REESE CK
HC	10070003	SHIELDS RIVER
HD	10070004	YELLOWSTONE RIVER BTWN ALKALI CK AND BRIDGER CK
HE	10070005	STILLWATER RIVER OF THE YELLOWSTONE RIVER
HF	10070006	CLARK FORK OF THE YELLOWSTONE RIVER
HG	10070007	YELLOWSTONE RIVER BTWN BIGHORN RIVER AND ALKALI CK
HH	10070008	PRYOR CREEK
IJ	10080010	BIGHORN RIVER BTWN YELLOWTAIL DAM AND SAGE CK
IN	10080014	SAGE CREEK OF THE BIGHORN RIVER
IO	10080015	BIGHORN RIVER BELOW YELLOWTAIL DAM
IP	10080016	LITTLE BIGHORN RIVER
JA	10090101	TONGUE RIVER ABOVE AND INCLUDING HANGING WOMAN CK
JB	10090102	TONGUE RIVER BELOW HANGING WOMAN CREEK
KG	10090207	POWDER RIVER ABOVE LITTLE POWDER RIVER
KH	10090208	LITTLE POWDER RIVER
KI	10090209	POWDER RIVER BELOW LITTLE POWDER RIVER
KJ	10090210	MIZPAH CREEK
LA	10100001	YELLOWSTONE RIVER BTWN POWDER RIVER AND BIGHORN RIVER
LB	10100002	BIG PORCUPINE CREEK OF THE YELLOWSTONE RIVER
LC	10100003	ROSEBUD CREEK OF THE YELLOWSTONE RIVER
LD	10100004	YELLOWSTONE RIVER BELOW POWDER RIVER
LE	10100005	O'FALLON CREEK
MA	10110201	LITTLE BEAVER CREEK OF THE LITTLE MISSOURI RIVER
MB	10110202	BOX ELDER CREEK OF THE LITTLE MISSOURI RIVER
MC	10110203	CANNONBALL CREEK
MD	10110204	BEAVER CREEK OF THE LITTLE MISSOURI RIVER
NB	10120202	BELLE FOURCHE RIVER
OA	17010101	KOOTENAI RIVER
OB	17010102	FISHER CREEK
OC	17010103	YAAK RIVER
OD	17010104	KOOTENAI RIVER BELOW YAAK RIVER
OE	17010105	MOYIE RIVER OF THE KOOTENAI RIVER
PA	17010201	CLARK FORK RIVER ABOVE BLACKFOOT RIVER
PB	17010202	ROCK CREEK AND FLINT CREEK DRAINAGES
PC	17010203	BLACKFOOT RIVER
PD	17010204	CLARK FORK RIVER BTWN FLATHEAD RIVER AND BLACKFOOT RIVER
PE	17010205	BITTERROOT RIVER
PF	17010206	NORTH FORK FLATHEAD RIVER
PG	17010207	MIDDLE FORK FLATHEAD RIVER
PH	17010208	FLATHEAD RIVER BTWN KERR DAM AND N FORK FLATHEAD RIVER
PI	17010209	SOUTH FORK FLATHEAD RIVER
PJ	17010210	STILLWATER RIVER OF THE FLATHEAD RIVER
PK	17010211	SWAN RIVER
PL	17010212	FLATHEAD RIVER BELOW FLATHEAD LAKE
PM	17010213	CLARK FORK RIVER BELOW FLATHEAD RIVER
QA	09040002	BELLY RIVER
QB	09040001	ST MARYS RIVER
UNABLE		UNABLE TO DETERMINE