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 USGS Station 12358500
MIDDLE FORK FLATHEAD RIVER NEAR WEST GLACIER, MT

PEND OREILLE RIVER BASIN

Latitude: 48^29'43"; Longitude: 114^00'33"
Hydrologic Unit Code: 17010207
Drainage area: 1,128 square miles.
Additional information is available about this station.
Use these links to retrieve Streamflow Hydrograph, or tab-separated ASCII file of monthly data.

Summary of Monthly Flows (1961-90)for Station 12358500

                                           MEDIAN   
                     25             75     CUMU-    
                   QUAR            QUAR-   LATIVE   
PERIOD      AVG.    ILE   MEDIAN   TILE    RUNOFF   
           (cfs)   (cfs)   (cfs)   (cfs)   (inch)   
-------------------------------------------------
OCT.	     970     612     814    1155    0.83
NOV.	    1148     635     810    1316    1.90
DEC.	     865     506     662     995    2.50
OCT-DEC	     994     625     824    1152
CALYEAR	    2808    2474    2885    3346

JAN.	     738     436     593     853    3.05
FEB.	     745     450     609     931    3.91
MAR.	     908     551     783    1043    4.69
JAN-MAR	     797     532     740    1068
OCT-MAR	     895     612     777    1102

APR.	    3093    1899    3371    3952    8.08
MAY	    9380    7687    9283   10714    18.2
JUNE	   10634    7915    9664   13660    28.7
APR-JUN	    7702    6259    7825    8649

JULY	    3974    2606    3687    5335    32.4
AUG.	    1426    1084    1277    1723    33.6
SEP.	    1046     724     844    1306    34.5
JUL-SEP	    2148    1643    1976    2812
APR-SEP	    4925    4119    4860    5688

WATYEAR	    2915    2593    2864    3353

Extreme High and Low Monthly and Daily Average Flows for Station 12358500

                    SECOND     THIRD                             SECOND     THIRD                
        MON.  HI.  MON.  HI.  MON.  HI.  DAILY  HI.  MON.  LO.  MON.  LO.  MON.  LO.  DAILY  LO. 
       ----------- ---------- ---------- ---------- ---------- ---------- ---------- ----------  
        FLOW  YR.  FLOW  YR.  FLOW  YR.  FLOW   YR.  FLOW  YR.  FLOW  YR.  FLOW  YR.  FLOW   YR. 
PERIOD  (cfs)      (cfs)      (cfs)      (cfs)       (cfs)      (cfs)      (cfs)      (cfs)      
------ ----------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
OCT.	3004.   60 2902.   86 2738.   52 6280.   86 367.    40 407.    53 409.    88 324.    53 
NOV.	5598.   90 3131.   86 2191.   51 30200.  90 279.    53 299.    88 359.    80 189.    53 
DEC.	2596.   76 2532.   42 2309.   90 8610.   81 262.    53 344.    58 347.    88 205.    53 
JAN.	2420.   74 1741.   81 1387.   59 8920.   74 316.    88 319.    58 337.    77 210.    53 
FEB.	2686.   71 1679.   51 1450.   63 6880.   71 300.    44 307.    88 331.    40 232.    55 
MAR.	2779.   86 2636.   72 1662.   68 6480.   86 307.    44 369.    64 390.    55 270.    44 
APR.	7093.   43 5580.   90 5442.   52 17500.  52 664.    75 997.