Figure: 30 TAC §298.330(e)(13)(A)

United States Geological Survey Gage 08161000, Colorado River at Columbus
Season Month Hydrologic
Condition
Subsistence Base Seasonal
Pulse
(2 per season)
Winter December Severe 301 cfs 464 cfs Magnitude:
3,000 cfs
Duration:
4 days
December Dry N/A 464 cfs
December Average N/A 737 cfs
January Severe 340 cfs 487 cfs
January Dry N/A 487 cfs
January Average N/A 828 cfs
February Severe 375 590 cfs
February Dry N/A 590 cfs
February Average N/A 895 cfs
Spring March Severe 375 cfs 525 cfs Magnitude:
3,000 cfs
Duration:
4 days
March Dry N/A 525 cfs
March Average N/A 1,020 cfs
April Severe 299 cfs 554 cfs
April Dry N/A 554 cfs
April Average N/A 977 cfs
May Severe 425 cfs 966 cfs
May Dry N/A 966 cfs
May Average N/A 1,316 cfs
June Severe 534 cfs 967 cfs
June Dry N/A 967 cfs
June Average N/A 1,440 cfs
Summer July Severe 342 cfs 570 cfs Magnitude:
3,000 cfs
Duration:
4 days
July Dry N/A 570 cfs
July Average N/A 895 cfs
August Severe 190 cfs 310 cfs
August Dry N/A 310 cfs
August Average N/A 516 cfs
Fall September Severe 279 cfs 405 cfs Magnitude:
3,000 cfs
Duration:
4 days
September Dry N/A 405 cfs
September Average N/A 610 cfs
October Severe 190 cfs 356 cfs
October Dry N/A 356 cfs
October Average N/A 741 cfs
November Severe 202 cfs 480 cfs
November Dry N/A 480 cfs
November Average N/A 755 cfs

cfs = cubic feet per second
N/A = not applicable