1988-04-11_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/11/1988
• Doc Name: Hydrologic Description ‎(Part 2 of 2)‎
• Section_Exhibit Name: Tab 7
• Media Type: D
• Archive: Yes

Table 7-39
Calculated Mean Annual Discharge and Peak Discharge for
Select Return Periods for Tuttle and Calamity Draws
Discharge Characteristics SW-N31 Tuttle SW-N1033 Calamity4
Mean Annual Discharge (cfs) .809 .862 .380 .417
2-yr Peak Discharge (cfs) 44.7 50.8 25.4 28.7
5-yr Peak Discharge (cfs) 270 337 172 205
10-yr Peak Discharge (cfs) 347 432 222 263
25-yr Peak Discharge (cfs) 453 565 290 344
50-yr Peak Discharge (cfs) 541 674 346 411
100-yr Peak Discharge (cfs) 632 787 405 481
500-yr Peak Discharge (cfs) 878 1090 504 668
1Discharge determined for the drainage area above Site SW-N3 (Tuttle Draw)
2Discharge determined for the drainage area above the confluence of Tuttle Draw and the
San Miguel River
3
Discharge determined for the drainage area above Site SW-N103 (Calamity Draw)
4Discharge determined for the drainage area above the confluence of Calamity Draw and the
San Miguel River
7-113 Revised 04/11/88