University of
Texas at Austin
Center for Research in Water Resources
Project: System of GIS-Based Hydrologic and Hydraulic Applications for
Highway Engineering
Sponsored by: Texas Department of Transportation (TxDOT)
Principal Investigator: David R. Maidment, Ph.D.
Project Manager: Francisco Olivera, Ph.D.
Graduate Research Assistant: Juling Bao
POTENTIAL EXTREME PEAK DISCHARGE EQUATIONS
by Juling Bao and Francisco Olivera
December 19, 1996
Flow Q in cfs.
Drainage area A in sq-mi.
| Region 1 | |
| Q= 3950 A0.83 | drainage area: 0 - 5 sq-mi |
| Q= 5050 A0.65 | drainage area: 5 - 70 sq-mi |
| Q =26871 A0.26 | drainage area: 70 - 1000 sq-mi |
| Q =71072 A0.12 | drainage area: > 1000 sq-mi |
| Region 2 | |
| Q =1824 A1.32 | drainage area: 0 - 10 sq-mi |
| Q =6017 A0.81 | drainage area: 10 - 75 sq-mi |
| Q =34959 A0.40 | drainage area: 75 - 750 sq-mi |
| Q =121475 A0.21 | drainage area: > 750 sq-mi |
| Region 3 | |
| Q =3437 A1.14 | drainage area: 0 - 4 sq-mi |
| Q =5108 A0.84 | drainage area: 4 - 40 sq-mi |
| Q =20653 A0.46 | drainage area: 40 - 610 sq-mi |
| Q = 252734 A0.07 | drainage area: > 610 sq-mi |
| Region 4 | |
| Q =3849 A1.14 | drainage area: 0 - 1 sq-mi |
| Q =3656 A0.95 | drainage area: 1 - 15 sq-mi |
| Q = 6939 A0.71 | drainage area: 15 - 60 sq-mi |
| Q = 27455 A0.37 | drainage area: 60 - 1850 sq-mi |
| Q = 178803 A0.12 | drainage area: > 1850 sq-mi |
| Region 5 | |
| Q= 6206 A0.89 | drainage area: 0 - 1.5 sq-mi |
| Q= 6544 A0.76 | drainage area: 1.5 - 400 sq-mi |
| Q= 301606 A0.12 | drainage area: > 400 sq-mi |
| Region 6 | |
| Q= 1146 A1.05 | drainage area: 0 - 20 sq-mi |
| Q= 2302 A0.82 | drainage area: 20 - 100 sq-mi |
| Q= 21255 A0.34 | drainage area: > 100 sq-mi |
| Region 7 | |
| Q= 3168 A0.82 | drainage area: 0 - 16 sq-mi |
| Q= 6790 A0.55 | drainage area: 16 - 1150 sq-mi |
| Q= 101713 A0.16 | drainage area: > 1150 sq-mi |
| Region 8 | |
| Q=1318 A0.96 | drainage area: 0 - 150 sq-mi |
| Q= 22895 A0.39 | drainage area: 150 - 7000 sq-mi |
| Q= 181400 A0.15 | drainage area: > 7000 sq-mi |
| Region 9 | |
| Q= 4345 A0.75 | drainage area: 0 - 100 sq-mi |
| Q=9300 A0.58 | drainage area: 100 - 500 sq-mi |
| Q= 207940 A0.09 | drainage area: > 500 sq-mi |
| Region 10 | |
| Q= 1577 A0.82 | drainage area: 0 - 60 sq-mi |
| Q= 3011 A0.66 | drainage area: 60 - 280 sq-mi |
| Q=34609 A0.23 | drainage area: > 280 sq-mi |
| Region 11 | |
| Q=1757 A0.94 | drainage area: 0 - 1.5 sq-mi |
| Q= 1871 A0.78 | drainage area: 1.5 - 45 sq-mi |
| Q= 5405 A0.50 | drainage area: 45 - 2800 sq-mi |
| Q= 193327 A0.05 | drainage area: > 2800 sq-mi |