(Link to USGS home page.)
 USGS Station 12422500
SPOKANE RIVER AT SPOKANE, WA

SPOKANE RIVER BASIN

Latitude: 47^39'34"; Longitude: 117^26'53"
Hydrologic Unit Code: 17010305
Drainage area: 4,290 square miles, approximately, of which about 122 mi2 in the vicinity of Hayden Lake is noncontributing to this station.
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 12422500

                                           MEDIAN   
                     25             75     CUMU-    
                   QUAR            QUAR-   LATIVE   
PERIOD      AVG.    ILE   MEDIAN   TILE    RUNOFF   
           (cfs)   (cfs)   (cfs)   (cfs)   (inch)   
-------------------------------------------------
OCT.	    1539    1302    1475    1743    0.44
NOV.	    2746    1976    2386    3451    1.11
DEC.	    4766    2289    2787    6385    2.13
OCT-DEC	    3017    1811    2473    4230
CALYEAR	    6562    5658    6450    7639

JAN.	    5561    2941    4154    7878    3.22
FEB.	    7627    3545    6829   10966    5.85
MAR.	    9518    6331    8720   12026    9.08
JAN-MAR	    7568    4854    7601    9343
OCT-MAR	    5292    3375    5741    6783

APR.	   14948   11136   14457   18800    12.1
MAY	   17397   14364   25099   12809    16.3
JUNE	    9907    6114    9294   12447    19.0
APR-JUN	   14084   10683   14544   17498

JULY	    2907    1928    2811    3690    20.1
AUG.	    1321    1005    1296    1747    20.6
SEP.	    1139     914    1177    1310    20.8
JUL-SEP	    1789    1377    1763    2193
APR-SEP	    7936    6305    8094    9946

WATYEAR	    6600    5348    6524    8109

Extreme High and Low Monthly and Daily Average Flows for Station 12422500

                    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.	3703.   60 3805.   -6 3742.   60 12900.  51 820.    88 1060.   32 1065.   64 633.    74 
NOV.	8527.   60 9120.   10 8567.   60 23000.  28 1036.   30 1088.   37 1192.   40 940.    49 
DEC.	30485.  34 16770.  65 14600.  18 47100.  34 1062.   31 1369.   79 1376.   36 937.    73 
JAN.	24280.  74 21290.  34 18900.  18 45200.  74 1019.   30 1176.   37 1220.   29 1000.   45 
FEB.	20866.  61 16470.  51 16000.  25 37800.  82 1184.   29 1421.   37 1651.   36 1230.   37 
MAR.	26910.  72 23400.  10 18745.  82 34100.  72 2687.   44 2480.   17 2731.   44 1480.   29 
APR.	29318.  56 28000.  43 26900.  32 36800.  56 5675.   41 6188.