Preliminary Estimations: Grande Ronde

Range for Annual Precipitation

12 - 70 in
305 - 1778 mm

Annual discharge per unit area

1.38 ft3/mi2
0.02 m3/km2

Monthly flow as a percent of Annual Flow (%)

OCT

NOV

DEC

JAN

FEB

MAR

APR

MAY

JUNE

JULY

AUG

SEPT

6

6

7

9

10

12

13

13

11

6

4

5

 

*Note: Values for monthly flow as a percentage of annual flow do not add up to 100% due to overlapping of drainage areas (i.e., nesting) of some or all gages used to calculate the percentages.

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