Preliminary Estimations: Powder

 

Range for Annual Precipitation

12 - 40 in
305 - 1016 mm

Annual discharge per unit area

0.47 ft3/mi2
0.005 m3/km2

Monthly flow as a percent of Annual Flow (%)

OCT

NOV

DEC

JAN

FEB

MAR

APR

MAY

JUNE

JULY

AUG

SEPT

2
2
3
4
7
12
18
21
17
7
4
3

*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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