Figure: 30 TAC §298.330(e)(2)

United States Geological Survey Gage 08126380, Colorado River near Ballinger
Season Hydrologic
Condition
Subsistence Base Small
Seasonal
Pulse
(2 per season)
Large
Seasonal
Pulse
(1 per season)
Annual
Pulse
Winter Severe 1 cfs 4 cfs Trigger:
27 cfs
Volume:
180 af
Duration:
11 days
Trigger:
96 cfs
Volume:
660 af
Duration:
17 days
Trigger:
3,200 cfs
Volume:
13,700 af
Duration:
10 days
Winter Dry N/A 4 cfs
Winter Average N/A 9 cfs
Winter Wet N/A 14 cfs
Spring Severe 1 cfs 3 cfs Trigger:
1,300 cfs
Volume:
5,300 af
Duration:
9 days
Trigger:
3,200 cfs
Volume:
13,700 af
Duration:
10 days
Spring Dry N/A 3 cfs
Spring Average N/A 9 cfs
Spring Wet N/A 19 cfs
Summer Severe 1 cfs 2 cfs Trigger:
130 cfs
Volume:
490 af
Duration:
6 days
Trigger:
630 cfs
Volume:
2,600 af
Duration:
9 days
Summer Dry N/A 2 cfs
Summer Average N/A 6 cfs
Summer Wet N/A 14 cfs
Fall Severe 1 cfs 4 cfs Trigger:
250 cfs
Volume:
950 af
Duration:
8 days
Trigger:
1,500 cfs
Volume:
5,700 af
Duration:
10 days
Fall Dry N/A 4 cfs
Fall Average N/A 9 cfs
Fall Wet N/A 17 cfs

cfs = cubic feet per second
af = acre-feet
N/A = not applicable