Figure: 30 TAC §298.330(e)(3)

United States Geological Survey Gage 08147000, Colorado River near San Saba
Season Hydrologic
Condition		 Subsistence Base Small
Seasonal
Pulse
(2 per season)		 Large
Seasonal
Pulse
(1 per season)		 Annual
Pulse
Winter Severe 50 cfs 95 cfs Trigger:
520 cfs
Volume:
3,100 af
Duration:
9 days		 Trigger:
1,600 cfs
Volume:
11,100 af
Duration:
15 days		 Trigger:
18,900 cfs
Volume:
129,100 af
Duration:
23 days
Winter Dry N/A 95 cfs
Winter Average N/A 150 cfs
Winter Wet N/A 210 cfs
Spring Severe 50 cfs 120 cfs Trigger:
5,800 cfs
Volume:
31,300 af
Duration:
9 days		 Trigger:
11,000 cfs
Volume:
70,200 af
Duration:
13 days
Spring Dry N/A 120 cfs
Spring Average N/A 190 cfs
Spring Wet N/A 360 cfs
Summer Severe 30 cfs 72 cfs Trigger:
510 cfs
Volume:
1,900 af
Duration:
4 days		 Trigger:
1,400 cfs
Volume:
6,500 af
Duration:
7 days
Summer Dry N/A 72 cfs
Summer Average N/A 120 cfs
Summer Wet N/A 210 cfs
Fall Severe 30 cfs 95 cfs Trigger:
890 cfs
Volume:
3,500 af
Duration:
6 days		 Trigger:
3,800 cfs
Volume:
19,200 af
Duration:
12 days
Fall Dry N/A 95 cfs
Fall Average N/A 150 cfs
Fall Wet N/A 210 cfs

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